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Management Strategies and Outcomes for VHL-related Craniospinal Hemangioblastomas.
Hemangioblastomas are rare and benign tumors accounting for less than 2% of all central nervous system (CNS) tumors. The vast majority of hemangioblastomas occur sporadically, whereas a small number of cases, especially in younger patients, are associated with Von Hippel-Lindau (VHL) syndrome. It is thought that loss of tumor suppressor function of the VHL gene results in stabilization of hypoxia-inducible factor alpha with downstream activation of cellular proliferative and angiogenic genes that promote tumorigenesis. VHL-related hemangioblastomas predominantly occur in the cerebellum and spine. Lesions are often diagnosed on contrast-enhanced craniospinal MRIs, and the diagnosis of VHL occurs through assessment for germline VHL mutations. Surgical resection remains the primary treatment modality for symptomatic or worrisome lesions, with excellent local control rates and neurological outcomes. Stereotactic radiotherapy can be employed in patients who are deemed high risk for surgery, have multiple lesions, or have non-resectable lesions. Given the tendency for development of either new or multiple lesions, close radiographic surveillance is often recommended for asymptomatic lesions. | en | apollo | train |
Phlorizin prevents glomerular hyperfiltration but not hypertrophy in diabetic rats.
The relationships of renal and glomerular hypertrophies to development of hyperfiltration and proteinuria early in streptozotocin-induced diabetes were explored. Control, diabetic, phlorizin-treated controls, and diabetic male Fischer rats were used. Phlorizin (an Na+-glucose cotransport inhibitor) was given at a dose sufficient to normalize blood glucose. Inulin clearance (C(inulin)) and protein excretion rate (PER) were measured. For morphometry, kidney sections were stained with periodic acid Schiff. At one week, diabetes PER increased 2.8-folds (P < .001), C(inulin) increased 80% (P < .01). Kidney wet and dry weights increased 10%-12% (P < .05), and glomerular tuft area increased 9.3% (P < .001). Phlorizin prevented proteinuria, hyperfiltration, and kidney hypertrophy, but not glomerular hypertrophy. Thus, hyperfiltration, proteinuria, and whole kidney hypertrophy were related to hyperglycemia but not to glomerular growth. Diabetic glomerular hypertrophy constitutes an early event in the progression of glomerular pathology which occurs in the absence of mesangial expansion and persists even after changes in protein excretion and GFR are reversed through glycemic control. | en | apollo | train |
The inhibition by rapamycin provides beneficial effects of the drug and in life-span extension.Rapamycin inhibits mTOR by associating with its intracellular receptor FKBP12.The mTOR pathway is dysregulated in aging and in human diseases (diabetes, obesity, depression, and cancers).mTOR also senses cellular nutrient, oxygen, and energy levels.The BMI for a person is their body mass divided by the square of their height—with the value universally being given in units of kg/m2. BMI was designed to classify average sedentary (physically inactive) populations, with an average body composition. The current value recommendations are as follow: a BMI from 18.5 up to 25 indicates optimal weight, a BMI lower than 18.5 suggests underweight, a number from 25 up to 30 indicates overweight, a number from 30 upwards suggests obesity. • _Nutrient-sensing pathway_. Nutrient-sensing pathway is a cell's ability to recognize and respond to fuel substrates such as glucose. Each type of fuel used by the cell requires an alternate pathway of utilization and accessory molecules. In order to conserve resources a cell will only produce molecules that it needs at the time. The level and type of fuel that is available to a cell will determine the type of enzymes it needs to express from its genome for utilization. Receptors on the cell membrane's surface, designed to be activated in the presence of specific fuel molecules, communicate to the cell nucleus via a means of cascading interactions. In this way the cell is aware of the available nutrients and is able to produce only the molecules specific to that nutrient type. • _mammalian Target of Rapamycin (mTOR)_. mTOR is a protein that in humans is encoded by the mTOR gene. mTOR is a serine/threonine protein kinase that regulates cell growth, cell proliferation, cell motility, cell survival, protein synthesis, and transcription. mTOR integrates the input from insulin, growth factors (IGF-1 and IGF-2), and amino acids. mTOR also senses cellular nutrient, oxygen, and energy levels. The mTOR pathway is dysregulated in aging and in human diseases (diabetes, obesity, depression, and cancers). Rapamycin inhibits mTOR by associating with its intracellular receptor FKBP12. The inhibition by rapamycin provides beneficial effects of the drug and in life-span extension.They are localized to the membrane of the Golgi apparatus.MT have the capacity to bind both physiological (zinc, copper, selenium) and xenobiotic (cadmium, mercury, silver, arsenic) heavy metals through the thiol group of its cysteine residues.MT exist in four isoforms and are synthesized primarily in the liver and kidney. | en | apollo | train |
Chloroquine retinopathy, is a form of toxic retinopathy (damage of the retina) caused by the drugs chloroquine or hydroxychloroquine, which are sometimes used in the treatment of autoimmune disorders such as rheumatoid arthritis and systemic lupus erythematosus. This eye toxicity limits long-term use of the drugs. | en | apollo | train |
Hallucinogen persisting perception disorder.Other disorders and conditions to be considered include schizophre- nia, depression, withdrawal from other drugs (e.g., sedatives, alcohol), certain metabolic disorders (e.g., hypoglycemia), seizure disorders, tumors of the central nervous system, and vascular insults.Other conditions.In contrast, among individuals ages 12—17 years, there are no gender differences (3.1% for both gen- ders). These figures may be used as proxy estimates for gender-related differences in the prevalence of other hallucinogen intoxication. Other hallucinogen intoxication may lead to increased suicidality, although suicide is rare among users of hallucinogens. Other hallucinogen intoxication can have serious consequences. The perceptual distur- bances and impaired judgment associated with other hallucinogen intoxication can result in injuries or fatalities from automobile crashes, physical fights, or unintentional self- injury (e.g., attempts to ”fly” from high places). Environmental factors and the personality and expectations of the individual using the hallucinogen may contribute to the nature of and severity of hallucinogen intoxication. Continued use of hallucinogens, particularly
MDMA, has also been linked with neurotoxic effects. Other substance intoxication. Other hallucinogen intoxication should be differentiated from intoxication with amphetamines, cocaine, or other stimulants; anticholinergics; in— halants; and phencyclidine. Toxicological tests are useful in making this distinction, and determining the route of administration may also be useful. Other conditions. Other disorders and conditions to be considered include schizophre- nia, depression, withdrawal from other drugs (e.g., sedatives, alcohol), certain metabolic disorders (e.g., hypoglycemia), seizure disorders, tumors of the central nervous system, and vascular insults. Hallucinogen persisting perception disorder.Other hallucinogen-induced disorders.Other hallucinogen intoxication is distinguished from the other hallucinogen-induced disorders (e.g., hallucinogen—induced anxiety disor— der, with onset during intoxication) because the symptoms in these latter disorders pre- dominate the clinical presentation and are severe enough to warrant independent clinical attention. | en | apollo | train |
Dr Asim Shahmalak (born 2 April 1961) is a British hair transplant surgeon, broadcaster, and proponent of such surgery. He performed the UK's first eyelash transplant in 2009, and has treated a number of British celebrity patients.
Shahmalak began his career as a general surgeon in the Republic of Ireland in 1990, he joined the National Health Service (NHS) as a specialist doctor in general surgery in 2001, practising until 2011 when he dedicated himself full-time to private hair transplant surgery at his own Crown Clinic. He has appeared as an expert on a number of television and radio programmes, including the Channel 4 show Embarrassing Bodies, talking about his techniques and demonstrating his surgery. He also written and commented on hair transplant surgery and associated issues for a number of UK media publications and blogs.
Early life and career
Shahmalak was born 2 April 1961 in Karachi, Pakistan, the son of Hatimali Shahmalak and his wife Mehfooza Shahmalak. He was educated at St Bonaventure's High School, Sindh, before studying for his medical degree (MBBS) graduating at the Sindh Medical College, University of Karachi, Pakistan, in 1988. He trained as a general surgeon, moving to the Republic of Ireland in 1990 to take up a post as a Senior House Officer in General Surgery. In 1997 he qualified as a Specialist registrar in general surgery. He became a member of the Fellowship of the Royal College of Surgeons (FRCS) in 1995 before moving to the UK in 1996.
Shahmalak worked as a specialist doctor in General Surgery for the Warrington & Halton Hospitals NHS Foundation Trust between 2001 and 2011. He worked privately as a hair transplant surgeon for The Hospital Group from 2005 to 2007. He founded his own Crown Clinic in 2007 alongside work for the NHS and The Transform Medical Group (2007–10). In 2011 he left the NHS to devote himself full-time to hair restoration at the Crown Clinic in Manchester and Harley Street.
Shahmalak is a member of the International Society of Hair Restoration Surgery and takes an active part in the society's charitable initiative Operation Restore, which provides free surgery for patients suffering hair loss due to disease or trauma.
Surgery
Shahmalak performed the UK's first eyelash transplant in 2009 using techniques pioneered in hair replacement surgery and for the victims of facial burns. He has helped pioneer eyebrow replacement surgery. and commented on the increasing popularity of so-called 'statement eyebrows', modelled on those of Kate Middleton, now Catherine, Duchess of Cambridge
Shahmalak has treated a number of celebrity patients, including actor David Fleeshman, German soccer professional Dietmar Hamann, Homes Under The Hammer star Martin Roberts,
Shahamalak has spoken about how men should not undergo hair transplant surgery until they are over 25 and their pattern of hair loss has been established, telling the Sunday Mirror in the case of Wayne Rooney, not as patient, "I'd never recommend surgery before the age of 25. If you start to go bald at a young age, the hair loss is usually more severe. I believe Wayne Rooney had a transplant too early, he'll need further surgery to maintain a good head of hair."
Voluntary work in Pakistan
Since 2013, Shahmalak has been travelling to Pakistan to help the victims of acid attacks. In 2014, Granada Television broadcast a report on the surgeon's self-funded trips to Karachi - with a team from the Crown Clinic - to perform surgery on women disfigured in assaults by ex-lovers, jealous friends or obsessive stalkers. Shahmalak carried out eyebrow restoration and hair transplants in addition to pioneering operations to replace eyelashes. The surgeon - who is reported to be only one of nine professionals in the world qualified to perform the surgery - also provided training for local doctors in order that they, in turn, can support other victims. His work, which is carried out in association with the charitable Smile Again Foundation set up by former beauty therapist Masarrat Misbah, has helped victims such as 27-year-old Kanwal Qayum, who was doused in acid as she slept by a friend envious of her new job as an air hostess. Another victim, Kanwal Ashar, had surgery to replace her eyebrows and eyelashes after being attacked by a man she refused to marry. "I was devastated to hear these stories," explained Shahmalak. "I had tears in my eyes. How could one person do this to another? It is beyond belief." According to the Granada report, prospective patients had travelled hundreds of miles - some on little more than donkey carts - just for the chance to get a consultation. However, Shahmalak found that more than half of the women had to be turned away because their scarring was so bad, surgery would not work. "It is heartbreaking," added the surgeon. Shahmalak's pioneering work in the region has been covered by ITV's Good Morning Britain, ITN News and Granada TV among others. He was voted Man Of The Year at the North West's Fusion Awards in recognition of his efforts. He continues to travel regularly to Pakistan - where there are around 300 acid attacks each year - in order to help victims. Writing in The Times, journalist Carol Midgley described it as an "outstandingly generous, life-affirming act".
In 2017, Shahmalak was interviewed by the BBC's Jane Hill about his charitable work in Pakistan and the spate of acid attacks in the UK.
Early in 2018, Shahmalak returned to Pakistan to operate on more victims of acid attacks and his charitable trip was covered by the BBC on North West Tonight where he was interviewed by presenter Annabel Tiffin. He performed eyelash transplants on two women as part of their facial reconstructions at a hospital in Karachi.
Other projects
Shahmalak has written for newspapers and blogs including the Manchester Evening News, and Huffington Post. Shahmalak is a donor and supporter of Operation Restore, a charitable programme run by non-profit medical association the International Society of Hair Restoration Surgery (ISHRS) to help burns and cancer victims who cannot afford treatment.
Shahmalak is involved in an ongoing hair follicle research programme in collaboration with staff at the University of Manchester. The research group, headed by Professor Ralf Paus, investigates the biology and pathology of the hair follicle as a microcosmic miniorgan in which many of the fundamental problems of biology can be studied in an exemplary fashion. Current research includes investigations into the neuroendocrine properties of the human hair follicle, their impact on mitochondrial function and hair follicle immune status, and the use of adult stem cells populations associated with human skin appendages for regenerative medicine purposes. In May 2018, the results of Dr Paus's research were published by PLOS Biology showing that a drug originally designed as a treatment for osteoporosis has a dramatic stimulatory effect on human hair follicles donated by patients undergoing hair transplantation surgery. Shahmalak was thanked by the research team for providing scalp hair follicles from more than 40 patients.
He is a frequent media spokesman, and has written about the importance placed in hair over the centuries and the fact that baldness until recently was not recognised as a social or medical issue, despite the sometimes catastrophic impact it can have on confidence and mental well-being. He wrote: "Male pattern baldness (MPB), the main cause of hair loss, affects an estimated quarter of men by the age of 30 and two thirds by the age of 60. Until recently, the impact baldness might have on confidence and well-being was little understood or recognised by the medical profession at large."
Shahmalak has also written about the impact of work stress and pressure on hair colour and density, highlighting the example of US President Barack Obama and leading UK politicians whose lifestyles have been reflected in their looks. Writing in the Huffington Post he concluded: "These very visible physical manifestations of stress are not simply a gift to the world's picture editors, and hair transplant surgeons like myself. They are an outward indicator of the internal difficulties of leadership in the modern world. And Obama is not the first powerful man – and it is mainly men affected in this way – whose hair has suffered and signalled the strains of his job."
Writing in the Manchester Evening News (31 October 2012), Shahmalak praised celebrities such as footballer Wayne Rooney and Calum Best who have spoken publicly about their hair transplants, and decried public criticism of them as "gloomily familiar". He wrote: "Reading the comments on various newspaper message boards, it struck me how unforgiving many people remain about a young man like Calum who decides to have hair transplant surgery. So why is wanting to save his hair so controversial? And why is the public debate still so blinkered against men like Calum, and Wayne Rooney who admit to having had treatment?" He added: "Of course there is nothing wrong with baldness. I know many men, friends of mine in fact, who are proud to be bald. They wear their shaven heads as a badge of masculinity. But choice is everything."
Shahmalak is a director for UK & Northern Europe for FUE Europe. In May 2017, at the sixth FUE Europe Congress in Ankara, Turkey, he performed live surgery on a patient. Shahmalak will be hosting the 8th annual FUE Europe Conference in Manchester, including a live surgical workshop at Crown Clinic, in 2019.
In May 2018, Shahmalak was appointed President of The Trichological Society, dedicated to orthodox hair science and hair specialisms, for a two-year period.
Broadcasting
Embarrassing Bodies on Channel 4
BBC Radio Manchester.
BBC News.
ITV News.
Granada Reports.
BBC World Service.
Good Morning Britain.
BBC North West Tonight.
BBC Asian Network.
The Times UK.
References
External links
Twitter @DrAsimShahmalak
LinkedIn https://www.linkedin.com/in/dr-asim-shahmalak-33965056/
1961 births
Living people
British transplant surgeons
Pakistani transplant surgeons
People from Karachi
Jinnah Sindh Medical University alumni
British physicians of Pakistani descent | en | apollo | train |
Lipid peroxidation in Gram-negative bacteremia modulates the risk for septic shock and infections by resistant Klebsiella pneumoniae.
Controversies in outcomes with the parenteral administration of antioxidants as adjuvant therapies led to the measurement of malondialdehyde (MDA), a product of lipid peroxidation, in serum collected from 120 patients with primary Gram-negative bacteremia during the first 24 h from sepsis onset. MDA was measured by the thiobarbiturate assay, followed by high-performance liquid chromatography (HPLC) analysis. After receiver operator characteristic (ROC) curve analysis, patients were divided into those with high levels of MDA and low levels of MDA. The primary endpoint was the association of the level of MDA with septic shock. The level of MDA as an index of neutrophil function and associations with outcome and with infections by carbapenem-resistant Klebsiella pneumoniae were the secondary endpoints. In total, 63 patients had high and 57 had low MDA levels; 27% and 49.1%, respectively, had septic shock (p = 0.015). The rate of the concentration of MDA to the total neutrophil count was used as an expression of neutrophil function; this was lower among patients with septic shock. The odds ratio (OR) for death among patients without septic shock and low level of MDA was 4.00; this was 0.48 for patients with septic shock (p = 0.020 between the two ORs). The OR for resistance to carbapenems among patients with bacteremia by K. pneumoniae and low level of MDA was 7.50 (p = 0.011 compared to patients with bacteremia by other pathogens). Low level of circulating MDA is associated with susceptibility to septic shock and infections by carbapenem-resistant K. pneumoniae. | en | apollo | train |
α-Bungarotoxin is one of the bungarotoxins, components of the venom of the elapid Taiwanese banded krait snake (Bungarus multicinctus). It is a type of α-neurotoxin, a neurotoxic protein that is known to bind competitively and in a relatively irreversible manner to the nicotinic acetylcholine receptor found at the neuromuscular junction, causing paralysis, respiratory failure, and death in the victim. It has also been shown to play an antagonistic role in the binding of the α7 nicotinic acetylcholine receptor in the brain, and as such has numerous applications in neuroscience research.
Structure
α-Bungarotoxin is a 74-amino-acid, 8 kDa α-neurotoxin with five disulfide bridges that binds as a competitive antagonist to nicotinic acetylcholine receptors (nAChRs). Like other snake venom α-neurotoxins, it is a member of the three-finger toxin protein family; its tertiary structure consists of a small globular core stabilized by four disulfide bonds, three projecting "finger" loops, and a C-terminal tail. The second loop contains an additional disulfide bond. The tips of fingers I and II form a mobile region that is essential for proper binding.
Hydrogen bonds allow for an antiparallel β-sheet, which keeps the second and third loops roughly parallel. The three-finger structure is preserved by four of the disulfide bridges: the fifth can be reduced without loss to toxicity. The fifth bridge is located on the tip of the second loop.
The multiple disulfide bonds and small amount of secondary structure seen in α-BTX is the cause of the extreme stability of this kind of neurotoxin. Since there are many entropically viable forms of the molecule, it does not denature easily, and has been shown to be resistant to boiling and strong acids.
Mechanism
α-neurotoxins antagonistically bind irreversibly to nAChRs of skeletal muscles, thereby blocking the action of ACh at the postsynaptic membrane, inhibiting ion flow and leading to paralysis. nAChRs contain two binding sites for snake venom neurotoxins. The observation that a single molecule of the toxin suffices to inhibit channel opening is in agreement with experimental data on the amount of toxin per receptor. Some computational studies of the mechanism of inhibition using normal mode dynamics suggest that a twist-like motion caused by ACh binding may be responsible for pore opening, and that this motion is inhibited by toxin binding.
Research applications
α-Bungarotoxin has played a large role in determining many of the structural details of the nicotinic acetylcholine receptors. It can be conjugated to a fluorophore or enzyme for immunohistochemical staining of fixed tissues and visualization via light or fluorescence microscopy. This application enables morphological characterization of the neuromuscular junctions.
See also
β-bungarotoxin
κ-bungarotoxin
References
External links
Structure at GenBank
Ion channel toxins
Nicotinic antagonists
Vertebrate toxins
Bungarus
Neurotoxins | en | apollo | train |
Deeper and longer dives 477e-7 result in greater inert gas absorption and greater likelihood of tissue supersaturation during ascent.This is probably the clinical correlate of bubble involution and redistribution with consequent restoration of flow. Patients exhibiting such remissions should still be reviewed at specialist diving medical centers because secondary deterioration or reembolization can occur. Unsurprisingly, these events can be misdiagnosed as typical strokes or transient ischemic attacks (TIAs) (Chap. 455) when patients are seen by those unfamiliar with diving medicine. All patients presenting with neurologic symptoms after diving should have their symptoms discussed with a specialist in diving medicine and be considered for recompression therapy. DCS is caused by the formation of bubbles from dissolved inert gas (usually nitrogen) during or after ascent (decompression) from a compressed gas dive. Bubble formation is also possible following decompression for extravehicular activity during space flight and with ascent to altitude in unpressurized aircraft. DCS in the latter scenarios is probably rare in comparison with diving, where the incidence is approximately 1:10,000 recreational dives. Breathing at elevated Pamb results in increased uptake of inert gas into blood and then into tissues. The rate at which tissue inert gas equilibrates with the inspired inert gas pressure is proportional to tissue blood flow and the blood-tissue partition coefficient for the gas. Similar factors dictate the kinetics of inert gas washout during ascent. If the rate of gas washout from tissues does not match the rate of decline in Pamb, then the sum of dissolved gas pressures in the tissue will exceed Pamb, a condition referred to as “supersaturation.” This is the prerequisite for bubbles to form during decompression, although other less well-understood factors are also involved. Deeper and longer dives 477e-7 result in greater inert gas absorption and greater likelihood of tissue supersaturation during ascent.Although a breach of these protocols increases the risk of DCS, adherence does not guarantee against it.DCS should be considered in any diver manifesting symptoms not readily explained by an alternative mechanism.Bubbles may form within tissues themselves, where they cause symptoms by mechanical distraction of pain-sensitive or functionally important structures. | en | apollo | train |
Heavy breathing in cattle is most commonly a sign of illness or disease. On a hot day, cattle normally breathe heavier and pant, so you should look for other signs of abnormal symptoms. Heavy breathing may be audible and the animal may struggle to draw air into the lungs and have trouble forcing the air out of the lungs. Causes of heavy breathing in cattle include bacterial, viral and respiratory diseases and illnesses.
Thromboembolic meningoencephalitis (TEME) is an infectious cattle disease caused by bacteria attacking the respiratory tract. A lowered immune system allows the bacteria to multiply and enter the bloodstream, resulting in septicemia. When the bacteria enter the lungs, rapid breathing and coughing may develop and progress into pneumonia and breathing difficulties. Clots may lodge in the larynx, constrict breathing by swelling the airway and cause loud, difficult breathing.
A herpes virus called infectious bovine rhinotracheitis (IBR), more commonly referred to as red nose, infects the upper respiratory tract of cattle. When combined with a bacterial infection, pneumonia may develop and cause breathing difficulties. Respiratory syncytial virus (BRSV) damages the cilia of the windpipe by trapping air in the tissues of the lungs. Raspy, labored breathing or breathing with the mouth open can occur when cattle are infected with this virus.
Respiratory infections in cattle can be minor or severe depending on the pathogen and the level of damage to the respiratory system. Respiratory diseases have a tendency to be more life threatening than infections. Diphtheria causes an infection in the mouth and throat, which results in swelling, restricted airways and breathing difficulties. Infectious lung disease or pneumonia occurs from an infection in the lower respiratory tract which affects the lungs and causes noisy and difficulty breathing. Bovine respiratory disease, more commonly called shipping fever, is a form of pneumonia caused by a number of pathogens that infect the lungs to cause heavy breathing. Emphysema or atypical interstitial pneumonia (AIP), also called fog fever, acute bovine pulmonary edema, bovine asthma or lung fever, occurs with a sudden change in the quality of feed. A toxic reaction in the lungs results in the bronchial passages constricting and the lungs rapidly filling with fluid. Severe respiratory distress causes labored breathing problems, grunting or wheezing and breathing through the mouth.
Cattle can have a severe allergic reaction to an injection called anaphylaxis. Heavy breathing and wheezing occurs when the throat and voice box become swollen and the lungs fill with fluid. This allergic reaction can cause cattle to extend the head and neck and pant with an open mouth.
Toxic plants and weeds can injure or poison cattle if ingested. Poisonous weeds that cause heavy breathing in cattle when eaten include bracken fern, marsh arrow-grass, marsh marigold, wild cherries, lupine, milkweed, cockle, white snakeroot, cocklebur, sneezeweed, squirrel corn and chokecherry. | en | apollo | train |
Bony eminences or the floor of involved skull base and the inner tabula of respective craniotomy rims are neatly drilled down.Additional space is gained by reducing the bone right after craniotomy, before dural opening.Of course, experienced microsurgeons will be able to also perform microsurgical movements with straightened arms, involving also shoulder muscles; but it does not make a lot of sense to also involve the deltoid and trapezius in microsurgery if it can be prevented (e.g., doing CP angle surgery in an uncomfortable position below the craniotomy level with straight arms to reach far enough). Some of the neurosurgical icons prefer to operate standing with a flexible arm board stand because they will be fast enough to not require a sitting position and rather prefer to be able to frequently change their own standing position in relation to the patient. The principle still remains the same. A standing position, however, excludes comfortable simultaneous use of two or more foot pedal-driven devices (multifunction foot pedal, bipolar, ultrasonic aspirator). When a pedal is used standing, the surgeon completely bears his weight on one leg for the time using the pedal. This can be bothersome, when you make continuous use of one or two pedal devices. ### 30.5.6 Cisterns
The ability to open cisterns fast and tissue sparing is pivotal to open a microsurgical dissection corridor at the beginning of the microsurgical phase of surgery. Knowledge of appropriate measures to reach the decisive neighboring cistern shortly after craniotomy is thus very important. Reaching the cistern very early is largely connected to precise placement of craniotomy and measures for slack brain to avoid undue pressure on brain parenchyma in order to reach deep. Additional space is gained by reducing the bone right after craniotomy, before dural opening. Bony eminences or the floor of involved skull base and the inner tabula of respective craniotomy rims are neatly drilled down.### 30.5.7 Anesthesiology
Good interaction with anesthesiology is precondition to reach the necessary brain relaxation for effortless opening of surgical corridors without the use of fixed retraction.We like to start fast infusion of mannitol after the patient has been prepped and draped to reach its full effect right after craniotomy. | en | apollo | train |
Development of LC-HRMS methods for evaluation of metabolic conversion of 5-fluorocytosine at GDEPT procedure.
Gene-directed enzyme/prodrug therapy represents one of the experimental treatment approaches. The system based on conversion of nontoxic prodrug 5-fluorocytosine to chemotherapeutic 5-fluorouracil by cytosine deaminase or fusion cytosine deaminase::uracil phosphoribosyl transferase belongs to the most frequently used. The detailed analysis of 5-fluorocytosine, 5-fluorouracil and its metabolites enables to understand various responses of tumour cells to treatment as well as mechanisms of resistance. A fast, sensitive and accurate methods based on liquid chromatography with high-resolution mass spectrometry (LC-HRMS) for the identification and quantification of 5-fluorocytosine, 5-fluorouracil and its major metabolites were developed. Two different hybrid high-resolution mass spectrometers sufficient for study of metabolic pathways were used. The LC-ESI IT-TOF MS method was successfully used for identification of 5-fluorocytosine, 5-fluorouracil and its metabolites in complex biological matrices (mesenchymal stromal cells and tumour cells media) and for confirmation of the metabolic conversion of 5-fluorocytosine even in chemoresistant tumour cells media samples. For quantification, the LC-HESI QExactive MS method was developed and validated. The developed method demonstrated a very good linear range for 5-fluorocytosine from 1 ng/mL to 1000 ng/mL and for its major metabolites from 5 ng/mL to 1000 ng/mL. The limits of detection and limits of quantification ranged from 1.1 to 26 ng/mL and from 3.6 to 87 ng/mL, respectively. Both developed methods confirmed the ability of gene-directed enzyme prodrug therapy to metabolically convert 5-fluorocytosine to 5-fluorouracil and its major metabolites in real samples of tumour cell media and mesenchymal stromal cells. | en | apollo | train |
Poorly differentiated fibrosarcoma (spindle cell sarcoma) involving the temporal bone.
A case of metastatic fibrosarcoma of the temporal bone was studied histopathologically. The primary site of this tumor was the posterior neck region. The initial major symptom of the patient was a left facial nerve paralysis. Although the patient underwent a suboccipital posterior craniectomy, radio-, and chemotherapy, she eventually died from multiple metastases. Histological examination of the temporal bones showed an extensive tumor invasion in the external auditory canal, middle ear cavity, middle ear muscle, tympanic membrane, mastoid cavity, petrous apex, facial nerve, and superior division (distal segment) of the vestibular nerve (left ear). The route from the stylomastoid foramen to the superior division of the vestibular nerve via the facial nerve canal could be one of the possible passages of tumor invasion. | en | apollo | train |
Kwatha Churna is a coarse powder of herbs, which is made into Kashayam and then taken. The freshly prepared Kashayam will have medicinal herbs in active mode and bring about fast action.
Made from fresh and pure Amalaki, Vibhitaki and Harithaki.
Made from fresh and pure Vata, Aswatta, Udumbara, Plaksha and Parisha.
Accelerates healing of cuts, wounds, abrasions and inflammatory conditions.
Beneficial in Vulvovaginitis and other female genital problems.
Used in the treatment of Weight loss, diabetes and anemia.
Used in treating many skin diseases such as eczema, psoriasis, leukoderma.
Recommended for skin diseases, wounds, ulcers and prurits (itching).
Used for treating diabetes and diabetic foot ulcer.
Also used for treating frequent urination, urinary turbidity and other urinary disorders.
Used in the treatment of pain in flanks, fever, bronchitis, cough with sputum.
Supports physical and mental health to cope with daily hectic life stress and tiredness.
Used in treatment of Asthma, bronchitis, Cough and related chest pain.
Has anti inflammatory and broncho-dilatory effect.
Provides relief from pain and stiffness occurring in pain disorders, especially lumbar pain.
Used in treatment of bloating and to develop appetite.
An excellent coolant and gives good relief in severe thirst, thirst associated with fever, Fever and Burning sensation.
Used in the treatment of obesity and loss of appetite.
Also used to treat internal abcesses, fatty liver disease, abdominal lump, rheumatoid arthritis and frozen shoulder. | en | apollo | train |
The Parkland formula accounts for the amount of fluids that need to be given for the burn injury within the first 24 hours with 50% being given in the first 8 hours and the other 50% being given over the following 16 hours.The head (front and back combined) is 18%, front of torso is 18%, back of torso is 18%, each arm is 9%, each leg is 13.5%, and the perineum is 1%. In general, these pediatric parameters are used for any patient who is younger than 5 years old but may be used through puberty. Lastly, the mechanism of the burn needs to be identified as it will determine specific treatments required for that burn type. Types of burns include electrical, chemical, or thermal. Electrical burns frequently have internal injuries to nerve and muscle that are far more significant than external injuries. Arrhythmias and rhabdomyolysis may result. Chemical burns will often require decontamination of the burn site; therefore, it is important to determine the causative agent, if possible. Scald and contact burns are common in children due to direct contact with hot surfaces or liquids. Make sure the pattern appears consistent with the history and stated mechanism. If there are inconsistencies in the story or a concerning pattern distribution of the burns, remember to consider nonaccidental trauma. In burn care, there are several immediate factors that need to be addressed. The first is fluid resuscitation and should be initiated immediately in any patient that did not pass the "doorway" assessment. Establishing the correct fluid resuscitation is key because over resuscitation can lead to tissue edema and compartment syndromes where under resuscitation can lead to organ hypoperfusion. The most frequently used formula is the Parkland formula: intravenous fluid volume (in milliliters) [body weight (in kilograms) × percentage of TBSA burn × 4 mL of lactated ringer solution.2 Fluid for first 24 hours = (4 × kg × %TBSA burn). The Parkland formula accounts for the amount of fluids that need to be given for the burn injury within the first 24 hours with 50% being given in the first 8 hours and the other 50% being given over the following 16 hours.Be sure to subtract any fluids that were already given by EMS or an outside hospital from the total, and add in hourly maintenance fluids.The patient's response to the fluid resuscitation is best measured by the placement of a Foley catheter to monitor urine output.The goal urinary output in pediatric patients is 1 to 1.5 mL/kg/h. | en | apollo | train |
Hamad Medical Corporation (HMC), established by Emiri decree in 1979, is Qatar’s premier not-for-profit health care provider. Located in the State of Qatar, HMC manages nine hospitals and operates both the national ambulance service and a home healthcare service.
HMC is the only healthcare organization outside the United States to receive simultaneous Joint Commission International (JCI) re-accreditation for all its hospitals and in 2011 the ambulance service and home healthcare service also received JCI accreditation.
Facilities
Rumailah Hospital
Opened in 1957, the Rumailah Hospital is a 644-bed hospital offering rehabilitative services for disabled adults, elderly people, and handicapped children. In addition, the hospital offers seven operating rooms, a laboratory, and a radiology unit with magnetic resonance imaging (MRI), ultrasound, and bone densitometry equipment.
Hamad General Hospital
Hamad General Hospital is a 603-bed facility located within the city of Doha that offers trauma, emergency medicine, pediatrics, critical care, specialized surgery, specialized medicine, laboratory medicine, and radiology services. Expansions are being made to accommodate the increasingly large population of the city, and a diabetes unit is being created within the hospital to treat the large numbers of diabetic patients in Qatar.
Women's Hospital
Established in 1988 to provide specialized care for women and infants, Women’s Hospital currently provides obstetrics, gynecology, neonatal care, emergency care, and newborn screening services. The facility hosts 319 beds in total, and is the nation's busiest delivery unit in the nation, giving birth to more than 17,000 babies annually.
National Center for Cancer Care and Research (NCCCR)
Formerly known as Al Amal hospital, this 86-bed research facility, opened in 2004, offers advanced modern therapeutic treatments for cancer patients.
Heart Hospital
A cardiology specialty facility adjacent to Rumailah Hospital, this facility was opened in 2010, and has 116 beds.
Al Wakra Hospital
Opened in December 2012, this 325-bed hospital serves the rapidly growing towns of Al Wakrah and Mesaieed, located to the south of Qatar. Areas of specialty include general medicine, general surgery, pediatrics and pediatric emergency, obstetrics and gynecology.
Al Khor Hospital
Serving the community in the country’s north, Al Khor Hospital opened in 2005. The hospital has 115 beds, including 10 for paediatrics. The hospital offers general medical care, general surgery, emergency medicine, obstetrics, pediatrics, and neonatal care.
Fahad bin Jassim Kidney Center
The Fahad Bin Jassim Kidney Center has been established to offer treatment for patients with acute and chronic kidney ailments. Located right across the Hamad Medical City complex in the Bin Omran area, this facility serves dialysis patients formerly accommodated at Hamad General Hospital.
Hazm Mebaireek General Hospital (HMGH)
A state-of-the-art community general hospital dedicated to caring for adult males living and working in the Industrial Area of Doha. Offering a range of inpatient and outpatient care. Some surgical cases such as general surgery or less complex orthopedics, plastics or urology procedures will also be seen. The new hospital also houses an Emergency Department for walk-in patients as well as HMC, Primary Health Care Corporation, and Qatar Red Crescent referrals and ambulance transfers.
Academic Health System
Launched in August 2011, the Academic Health System is an initiative formed in close collaboration with HMC's partner Weill Cornell Medical College in Qatar, as well as other academic, healthcare and research partners such as Qatar University, the University of Calgary – Qatar, College of the North Atlantic – Qatar, Sidra Medical and Research Center, the Primary Health Care Corporation, and the Qatar Biomedical Research Institute (QBRI). The purpose of this initiative is to integrate health, education, and research through collaboration between each partner institution, in order to achieve the highest possible quality healthcare in Qatar.
See also
List of hospitals in Qatar
References
External links
HMC Website
Health care companies of Qatar
Health care companies established in 1979
Qatari companies established in 1979 | en | apollo | train |
Monitor residual urine volume in people who are not using intermittent or indwelling catheterisation after starting antimuscarinic treatment.
When prescribing antimuscarinics, take into account that:
antimuscarinics known to cross the blood-brain barrier (for example, oxybutynin) have the potential to cause central nervous system-related side effects (such as confusion)
antimuscarinic treatment can reduce bladder emptying, which may increase the risk of urinary tract infections
antimuscarinic treatment may precipitate or exacerbate constipation.
## Botulinum toxin type A
In August 2012, botulinum toxin type A did not have a UK marketing authorisation for the indications in recommendations 1.3.8 to 1.3.11. See NICE's information on prescribing medicines.
Offer bladder wall injection with botulinum toxin type A to adults:
with spinal cord disease (for example, spinal cord injury or multiple sclerosis) and
with symptoms of an overactive bladder and
in whom antimuscarinic drugs have proved to be ineffective or poorly tolerated.
Consider bladder wall injection with botulinum toxin type A for children and young people:
with spinal cord disease and
with symptoms of an overactive bladder and
in whom antimuscarinic drugs have proved to be ineffective or poorly tolerated.
Offer bladder wall injection with botulinum toxin type A to adults:
with spinal cord disease and
with urodynamic investigations showing impaired bladder storage and
in whom antimuscarinic drugs have proved to be ineffective or poorly tolerated. | en | apollo | train |
Embolization refers to the passage and lodging of an embolus within the bloodstream. It may be of natural origin (pathological), in which sense it is also called embolism, for example a pulmonary embolism; or it may be artificially induced (therapeutic), as a hemostatic treatment for bleeding or as a treatment for some types of cancer by deliberately blocking blood vessels to starve the tumor cells.
In the cancer management application, the embolus, besides blocking the blood supply to the tumor, also often includes an ingredient to attack the tumor chemically or with irradiation. When it bears a chemotherapy drug, the process is called chemoembolization. Transcatheter arterial chemoembolization (TACE) is the usual form. When the embolus bears a radiopharmaceutical for unsealed source radiotherapy, the process is called radioembolization or selective internal radiation therapy (SIRT).
Uses
Embolization involves the selective occlusion of blood vessels by purposely introducing emboli, in other words deliberately blocking a blood vessel.
Embolization is used to treat a wide variety of conditions affecting different organs of the human body.
Bleeding
The treatment is used to occlude:
Recurrent coughing up of blood
Cerebral aneurysm
Gastrointestinal bleeding
Nosebleed
Varicocele
Primary post-partum bleeding
Surgical bleeding
Traumatic bleeding such as splenic rupture or pelvic fracture
Growths
The treatment is used to slow or stop blood supply thus reducing the size of the tumour:
Kidney lesions
Liver lesions, typically hepatocellular carcinoma (HCC). Treated either by particle infarction or transcatheter arterial chemoembolization (TACE).
Uterine fibroids
Arteriovenous malformations (AVMs)
Juvenile Nasopharyngeal Angiofibroma
Malignant hypertension
It could be useful for managing malignant hypertension due to end stage kidney failure.
Other
Portal vein embolization prior to liver resection.
Technique
First developed by Sadek Hilal in 1968, embolization is a minimally invasive surgical technique. The purpose is to prevent blood flow to an area of the body, which can effectively shrink a tumor or block an aneurysm.
The procedure is carried out as an endovascular procedure by an interventional radiologist in an interventional suite. It is common for most patients to have the treatment carried out with little or no sedation, although this depends largely on the organ to be embolized. Patients who undergo cerebral embolization or portal vein embolization are usually given a general anesthetic.
Access to the organ in question is acquired by means of a guidewire and catheter(s). Depending on the organ this can be very difficult and time-consuming. The position of the correct artery or vein supplying the pathology in question is located by digital subtraction angiography (DSA). These images are then used as a map for the radiologist to gain access to the correct vessel by selecting an appropriate catheter and or wire, depending on the 'shape' of the surrounding anatomy.
Once in place, the treatment can begin. The artificial embolus used is usually one of the following:
Coils: Guglielmi Detachable Coil or Hydrocoil
Particles
Foam
Plug
Microspheres or Beads
Once the artificial emboli have been successfully introduced, another set of DSA images are taken to confirm a successful deployment.
Agents
Liquid embolic agents - Used for AVM, these agents can flow through complex vascular structures so the surgeon does not need to target his catheter to every single vessel. Onyx is an example for a liquid embolic agent.
Butyl cyanoacrylate (NBCA) - This material is approved by FDA in 2000 for embolisation of cerebral ateriovenous malformation. When exposed to an enivornment containing anions such as blood or water, it polymerises quickly. Catheters should be flushed with dextrose 5% to prevent premature polymerisation within the catheter. NBCA completely occludes vessels and is permanent. However, the polymerisation can spread distally or proximally of the intended location.
ethiodol - Made from iodine and poppyseed oil, this is a highly viscous agent. It is usually used for chemoembolizations, especially for hepatomas, since these tumors absorb iodine. The half life is five days, so it only temporarily embolizes vessels.
Sclerosing agents - These will harden the endothelial lining of vessels. They require more time to react than the liquid embolic agents. Therefore, they cannot be used for large or high-flow vessels.
ethanol - This permanent agent is very good for treating AVM. The alcohol does need some time to denature proteins of the endothelium and activate the coagulation system to cause a blood clot. Therefore, some surgeons will use a balloon occlusion catheter to stop the blood flow and allow time for ethanol to work. Ethanol is toxic to the system in large quantities and may cause compartment syndrome. In addition, the injections are painful.
ethanolamine oleate - This permanent agent is used for sclerosing esophageal varices. It contains 2% benzyl alcohol, so it is less painful than ethanol. However it does cause hemolysis and kidney failure in large doses.
sotradecol - This agent is used for superficial lower extremity varicose veins. It has been around for a very long time and is a proven remedy. However, it does cause hyperpigmentation of the region in 30% of patients. It is less painful than ethanol.
Particulate embolic agents - These are only used for precapillary arterioles or small arteries. These are also very good for AVM deep within the body. The disadvantage is that they are not easily targeted in the vessel. None of these are radioopaque, so they are difficult to view with radiologic imaging unless they are soaked in contrast prior to injection.
hemostasis - Temporarily occludes vessels for five weeks. Works by absorbing liquid and plugging the vessel. Composed of water-insoluble gelatin, so the particles may travel distally and occlude smaller capillaries. One way to localize the injection of gelfoam is to make a gelfoam sandwich. A coil is placed at a precise location, then gelfoam is injected and lodged into the coil.
polyvinyl alcohol (PVA) - These are permanent agents. They are tiny balls 50-1200 um in size. The particles are not meant to mechanically occlude a vessel. Instead they cause an inflammatory reaction. Unfortunately, they have a tendency to clump together since the balls are not perfectly round. The clump can separate a few days later, failing as an embolic agent.
Embolization microspheres - These are superior permanent or resorbable particulate embolic agents available in different well-calibrated size ranges for precise occlusion. Embolization microspheres may comprise additional functionality such as drug loading and elution capability, specific mechanical properties, imageability or radioactivity
Mechanical occlusion devices - These fit in all vessels. They also have the advantage of accuracy of location; they are deployed exactly where the catheter ends.
coils - These are used for AVF, aneurysms, or trauma. They are very good for fast-flowing vessels because they immediately clot the vessel. They are made from platinum or stainless steel. They induce clots due to the Dacron wool tails around the wire. The coil itself will not cause mechanical occlusion. Since it is made of metal, it is easily seen in radiographic images. The disadvantage is that large coils can disrupt the radiographic image. The coil may also lose its shape if the catheter is kinked. Also, there is a small risk of dislodging from the deployed location.
detachable balloon - Treats AVF and aneurysms. These balloons are simply implanted in a target vessel, then filled with saline through a one-way valve. The blood stops and endothelium grows around the balloon until the vessel fibroses. The balloon may be hypertonic relative to blood and hence rupture and fail, or it may be hypotonic and shrink, migrating to a new location.
Advantages
Minimally invasive
No scarring
Minimal risk of infection
No or rare use of general anesthetic
Faster recovery time
High success rate compared to other procedures
Preserves fertility and anatomical integrity
Disadvantages
User dependent success rate
Risk of emboli reaching healthy tissue potentially causing gastric, stomach or duodenal ulcers. There are methods, techniques and devices that decrease the occurrence of this type of adverse side effect.
Not suitable for everyone
Recurrence more likely
See also
Endovascular surgery
Gastrointestinal bleeding
Interventional radiology
References
External links
eMedicine: Embolization
Interventional radiology
Surgery | en | apollo | train |
This study was designed to investigate the effect of NF-κB signaling pathway during acute myocardial infarction and chronic ischemic heart failure in aged mice. We used cytomegalovirus (CMV) promoter and recombinant single strand AAV9 vector and double strand AAV9 vector to validate tissue-specific expression, and screened to obtain better AAV9 vectors which can be used in gene therapy of heart disease. We used IKBα (inhibitor of kappa Bα, IKBα) gene recombinant AAV9 vector for the targeting transduction in aging mouse heart, to investigate whether exogenously introduced IKBα can be used in gene therapy, and lead to targeted depression of NF-κB, reduction of myocardial infarction, inhibition of myocardial apoptosis, and improve survive of ischemia heart failure in aging mice.
Male C57BL/6J mice with age of 15 to 18-month were selected, to establish acute myocardial infarction model via left coronary artery liagation. The myocardial infarct size, myocardial apoptosis, IKBα, and the expression of p65 of p50 in cytoplasm and nuclear were observed on day 3 and day 28. ssAAV9-CMV-eGFP and dsAAV9-CMV-eGFP vector with the dose of 1 × 1011 vg were injected into C57BL/6J mice via the tail vein, respectively. At 0 week, 1 week, 2 weeks, 3 weeks, 4 weeks, 5 weeks and 8 weeks of viral vector transduction, the laser confocal and Western Blot were used to detect GFP protein expression in heart, liver, spleen, lung, kidney, brain and skeletal muscle. We evaluated the tissue targeting effects of ssAAV9 and dsAAV9 vectors with CMV promoter in vivo.
It is observed that p65 and p50 positive cells are much higher in MI mice than in SH mice by immunohistochemistry methods at 3 d and 28 d (p65 410 vs 328, P< 0.05; IKBα 350 vs 101, P< 0.05). Expression of p65 in MI 3d, 28d group in old mice is higher than in SH mice, which means higher activities of NF-κB in mice after myocardial infarction. There were statistics differences in expression of MMP-2 and MMP-9 between SH and MI. Expression of MMP-2 and MMP-9 were higher in MI than in SH in at 3 d and 28 d (MMP-2 420 vs 582,P< 0.05; MMP-9 568 vs 365, P< 0.05). Apoptosis rate compare with SH were 11.5 ± 0.35% vs 0.29 ± 0.03%, P<0.001.
NF-κB signaling pathway is involved in myocardial infarction and consequent chronic heart failure in aged mice. CMV promoter recombinant dsAAV9 vectors can be expressed in cardiac more efficiently and stably for a long-term comparing to ssAAV9 vector. While, the CMV promoter activity can easily be silent in the liver, dsAAV9-CMV vector is an ideal vector for gene therapy of heart disease. | en | apollo | train |
Various things can affect this, including, rather scarily, the microwaves from mobile phones and other wireless technology.The sequence of amino acids is determined by DNA, but the end shape is made by the way in which positive and negative atoms along the huge molecule are attracted to each other, and move together causing a turn or twist in the molecule.**Fibrous** proteins include collagen (which is found in all connective tissues including bones, cartilage, tendons, and ligaments), keratin (which waterproofs the skin, hair, and nails), elastin (which gives elasticity where it is needed in ligaments and elastic connective tissue), and actin and myosin (which allow muscle contraction and cell division, as well as transport within the cell). **Globular** proteins are functional proteins and play crucial roles in almost all biological processes. They include:
• Protein enzymes, e.g., salivary amylase (which starts starch digestion in the mouth) and oxidase enzymes (among many others)
• Transport proteins such as hemoglobin and lipoproteins (among many others)
• Plasma proteins including albumin, which provides osmotic pressure to the blood, as well as being either a base or an acid, keeping pH balanced in the blood
• Protein hormones such as growth hormone and insulin
• Immune functioning proteins like antibodies, complement proteins, and molecular chaperones
See why it's essential to keep the pH and the temperature of the body within the correct range? Too much acid or heat irreversibly denatures these vital globular proteins, which would then interfere with virtually all of our vital functions. What is really interesting is that globular proteins' shape is not determined by DNA, but by environmental factors. The sequence of amino acids is determined by DNA, but the end shape is made by the way in which positive and negative atoms along the huge molecule are attracted to each other, and move together causing a turn or twist in the molecule. Various things can affect this, including, rather scarily, the microwaves from mobile phones and other wireless technology.Most cells can only use a few simple sugars, the main one being glucose.The brain can only use glucose and must have a regular supply.Glucose is broken down within cells (glycolysis), providing two molecules of ATP in the cytoplasm.This, not needing oxygen, is known as anaerobic respiration. | en | apollo | train |
After graduating with a BA (Hons) in Medical Sciences from the University of Oxford, I moved to London to complete a PhD in Cardiac Pharmacology at Imperial College. I am now a college lecturer in Physiology at Trinity College Oxford.
HIV treatment often requires a number of pills to be taken each day. A new pill from Gilead Sciences that combined four HIV medications could make life easier for these patients.
Immunotherapy can help to clear tumours by increasing the activity of the immune system. New research has shown that in a mouse model of melanoma, particular gut bacteria species can help to enhance the immune system to clear the tumour without the need for extra drugs.
Some people may be 'hardwired' to crave high-calorie foods, perhaps providing an explanation for why some find it hard to lose and control body mass. This could lead to a personalised way to treat people for obesity, based on their genes and brain wiring.
Parkinson's disease is a progressive neurological disease characterised by movement difficulties. The disease is thought to be due to a lack of dopamine, although a new study has shown increase blood vessel formation could also form part of the disease process.
A woman's health during pregnancy can influence the baby's. Although we know exercise is usually beneficial, little is known about how exercise and activity can affect people during pregnancy. New research has shown that depression may be linked to a sedentary lifestyle during pregnancy, increasing the risk of gestational diabetes.
Anaemia is a condition where the oxygen-carrying capacity of the blood is reduced. Scientists have discovered a potential molecular switch that could cure anaemia by increasing the body's own production of red blood cells.
Sugary drinks are linked to a number of conditions, including hypertension, coronary heart disease and stroke. Now, a new link between these drinks and heart failure has been found in a Swedish study of men.
Drug side effects can often be a surprise to both patient and doctor, and can reduce compliance with treatment. Scientists are now one step closer to a predictive test that could determine which drugs would cause serious side effects in which patient.
Toxoplasma is a common parasitic infection that does not cause illness in the majority of people it infects. However, in some it can cause serious complications. Scientists have found a key pathway in the induction of immunity to the parasite, furthering research into a vaccine.
Chronic fatigue syndrome is characterised by a debilitating tiredness and often is accompanied by pain. Little is known about its pathology and few effective treatments exist. New research has shown that exercise and CBT can have a prolonged effect on reducing a person's symptoms. | en | apollo | train |
Granulin is a protein that in humans is encoded by the GRN gene. Each granulin protein is cleaved from the precursor progranulin, a 593 amino acid long and 68.5 kDa protein. While the function of progranulin and granulin have yet to be determined, both forms of the protein have been implicated in development, inflammation, cell proliferation and protein homeostasis. The 2006 discovery of the GRN mutation in a population of patients with frontotemporal dementia has spurred much research in uncovering the function and involvement in disease of progranulin in the body. While there is a growing body of research on progranulin's role in the body, studies on specific granulin residues are still limited.
Progranulin
Progranulin is the precursor protein for granulin. Cleavage of progranulin produces a variety of active 6 kDa granulin peptides. These smaller cleavage products are named granulin A, granulin B, granulin C, etc. Epithelins 1 and 2 are synonymous with granulins A and B, respectively. Cleavage of progranulin into granulin occurs either in the extracellular matrix or the lysosome. Elastase, proteinase 3 and matrix metalloproteinase are proteases capable of cleaving progranulin into individual granulin peptides. Progranulin and granulin can be further differentiated by their hypothesized opposing roles in the cell. While progranulin is associated with anti-inflammation, cleaved granulin peptides have been implicated in pro-inflammatory behavior. A C. elegans study showed that granulin peptides may also participate in toxic activity.
Expression
Progranulin is expressed in a wide variety of cell types both in the periphery and in the central nervous system. Progranulin expression is low in early development, but increases as cells mature. Cell types expressing progranulin include neurons, microglia, astrocytes and endothelial cells. Progranulin has been found to be highly expressed in microglia and up-regulated during injury Within the brain, progranulin mRNA is highly expressed in pyramidal, hippocampal and Purkinje cells cells.
Structure
Each individual granulin domain peptide is 60 amino acids in length. Granulin peptides are cysteine rich and capable of forming 6 disulfide bonds per residue. The disulfide bonds form a central rod-like core that shuttles each individual granulin peptide into a stacked β-sheet configuration. The structure of the granulin protein is similar to the structure of proteins from protein families that consist of hormones, growth factors, ion channel modulators and enzyme inhibitors. Because of progranulin's structural similarities to these proteins, much research was done to interrogate progranulin's potential role as a growth factor. When progranulin is secreted into the extracellular matrix, it is often glycosylated at 4 confirmed and 1 tentative N-linked glycosylation sites. The n-terminus of progranulin is hypothesized to be involved in the secretion of progranulin via secretory vesicles. Specifically, Progranulin may be involved in regulating exosome excretion. The C-terminus of progranulin is hypothesized to be the primary binding partner of SORT1, a receptor of extracellular progranulin. The structural differences between each individual granulin peptide have yet to be characterized.
Interactive partners
In the extracellular matrix, progranulin binds to receptors on several cell types resulting in either activation of a signal transduction pathway or engulfment into the cell. Several studies have shown progranulin's involvement in the binding of SORT1 and the subsequent trafficking of bounded progranulin to the lysosome. One recent study has shown that progranulin may actually mediate prosaposin trafficking to the lysosome via SORT1. However, the absence of SORT1 does not prevent exogenous progranulin from promoting neurite outgrowth or enhancing cell survival of GRN knockout cells, suggesting that other receptors are involved in mediating extracellular progranulin function For example, SORT1 -/- neuronal cells are still able to bind progranulin. Other studies have suggested tumor necrosis factor and EPH receptor A2 as potential progranulin facilitators. After binding to the receptor, progranulin may induce and modulate signaling pathways such as MAPK/ERK, PI3K/Akt, and FAK. Gene ontology enrichment analysis reveals an association between progranulin and notch receptor signaling. Granulin has also been shown to interact with Cyclin T1 and TRIB3.
Function
Development
Although progranulin expression increases as cells mature, they are still involved in the development of multiple cell types. Progranulin is hypothesized to be a neurotrophic factor involved in corticogenisis. Induced pluripotent stem cell lines (IPSC) harboring the GRN mutation show a decrease in cortical neuronal differentiation ability. A recent mice study suggests that progranulin may be involved in regulating the early development of cerebellar tissue by selecting for individual climbing fibers as they intersect and form synapses with Purkinje cells. In addition, several studies implicate progranulin in synaptic pruning, a microglial process that occurs during development of the neural network. Cytokines, a neuronal marker for synapse elimination, is found to be upregulated in neurons with the GRN mutation. Increased cytokine tagging results in an increase in microglial density and activity around synapses. Progranulin may also be involved in sexual determination during embryonic development.
Inflammation and wound healing
Progranulin levels are elevated when tissue is inflamed. After wounding, keratinocytes, macrophages and neutrophils increase production of progranulin. Neutrophils are capable of secreting elastase into the extracellular matrix that is capable of cleaving progranulin into granulin peptides, that promote further promote inflammation. SLPI, inhibitors of elastase, are also released by neutrophiles and macrophages to modulate progranulin cleavage. Addition of granulin B in cultured epithelial cells causes cells to secrete IL-8, a chemical that attracts monocytes and neutrophils, which further suggests the involvement of granulin peptides in promoting inflammation. The addition of exogenous SLPI and progranulin is able to alleviate the enhanced inflammatory response of mice that are unable to inhibit the cleavage of progranulin.
Cell proliferation
Progranulin is highly expressed in cells that are highly proliferative in nature. Several studies implicate progranulin in tumorigenesis and neuronal outgrowth. Progranulin promotes mitogenesis in epithelial cultures. When two epithelial lines were cultured in media with recombinant PGRN, proliferation was stimulated. Knockout of both progranulin homologues in a zebrafish model reduces axonal outgrowth. In primary cortical and motor neurons, progranulin regulates neuronal outgrowth and survival. In primary motor neurons, progranulin has been shown to increase neurite outgrowth by regulating the glycogen synthase kinase-3 beta. Progranulin may function as an autocrine growth factor in tumorigenesis.
Lysosomal function
The discovery of a GRN mutation leading to lysosomal storage disorder led to many studies that explored progranulin's role in regulating protein homeostasis via the lysosomal pathway. Transcriptional gene network interference study suggests that progranulin is highly involved in lysosomal function and organization. Imaging studies have shown co-localization of progranulin and lysosomal marker LAMP-1. Progranulin expression is regulated by TFEB, a transcription factor that mediates proteins involved in lysosomal biosynthesis. Progranulin may be involved in regulating protease activity. Proteases that could be regulated by progranulin include prosaposin, which is cleaved into saposin peptides in the lysosome, and cathepsin D, the primary protease involved in protein aggregate break down. GRN mutation shares similar neuropathology and clinical phenotype with CHMP2B and VCP mutations, genes that are both involved in the trafficking and breakdown of proteins involved in lysosomal function.
Clinical significance
Frontotemporal dementia
Heterozygous mutation of the GRN gene leading to progranulin haploinsufficiency causes frontotemporal dementia. These mutations include frameshift, splice site, nonsense signal peptide, Kozak sequence disruptions and missense mutations, which result in either nonsense-mediated decay or the production of non-functional protein. Patients with GRN caused FTD (GRN-FTD) exhibit asymmetric brain atrophy, although age of onset, disease progression and clinical symptoms vary, suggesting that other genetic or environmental factors may be involved in disease expression. Pathological indicators include cytosolic ubiquitin deposits enriched in hyperphosphorylated TAR DNA-binding protein 43 (TDP-43), autophagy-related protein aggregates, ubiquitin-binding protein p62, lentiform intranuclear inclusions, dystrophic neurites and inflammation. Patients with the heterozygote mutation exhibit a reduction of 70-80% serum progranulin levels when compared to controls. Reprogrammed stem cells restore GRN mRNA levels to 50%, further suggesting that some other genetic or environmental factor is involved in regulating FTD disease expression. Mice exhibit reduced autophagic flux and autophagy-dependent clearance. Human FTLD-GRN derived fibroblasts show decrease lysosomal protease activity and lymphoblasts containing neuronal ceroid lipofuscinosis-like storage material. FTLD-GRN IPSC cortical Neurons have enlarged vesicles, lipofuscin accumulation and cathepsin D deficiency.
Neuronal ceroid lipofuscinosis
Homozygous mutation of the GRN gene causes neuronal ceroid lipofuscinosis (NCL) characterized by an accumulation of autofluorescent lipofuscin, enlarged vacuoles, impairment in lysosomal activity, retinal & brain degeneration, exaggerated inflammatory responses, microgliosis, astrogliosis and behavioral dysfunction such as OCD-like and disinhibition-like behavior. Aged GRN double mutant mice have lipofuscin deposits and enlarge lysosomes, while one group found phosphorylated TDP-43.
Other diseases
Progranulin may also be involved in cancer development, atherosclerosis and other metabolic disease, Alzheimer's disease, amyotrophic lateral sclerosis (ALS) and limbic predominant age-related TDP-43 encephalopathy (LATE).
Progranulin can promote cyclin D1 expression in breast cancer lines and phosphorylation of proteins through extracellular regulated kinase signaling pathways. Progranulin is highly expressed in ovarian, adrenal carcinomas and immortalized epithelial cells. There is a correlation between progranulin concentration and cancer severity. Granulin release by macrophages has been associated with fibrotic hepatic metastasis in pancreatic cancer. The human liver fluke Opisthorchis viverrini contributes to the development of bile duct (liver) cancer by secreting a granulin-like growth hormone.
Progranulin may also be involved in promoting the progression of atherosclerosis. While progranulin may be anti-atherogenic, granulins may be pro-atherogenic. Increased serum and plasma progranulin levels in patients with type 2 diabetes and visceral obesity implicating progranulin in metabolic diseases.
A recent genome-wide association study (GWAS) has found that genetic variations in GRN are associated with late-onset sporadic Alzheimer’s disease (LOAD). These genetic variations change the degradation pathways of misfolded protein contributing misfolded β-amyloid accumulation and plaque formation.
References
Further reading
External links
GeneReviews/NCBI/NIH/UW entry on GRN-Related Frontotemporal Dementia
Protein families
Precursor proteins | en | apollo | train |
Harm avoidance, self-harm, psychic pain, and the borderline personality: life in a "haunted house".
This article investigates the pattern of temperament for patients with borderline personality disorder and the impact of psychotherapeutic treatment on temperamental variables. A cohort of patients treated in the Westmead Borderline Personality Disorder Psychotherapy research project completed the Tridimensional Personality Questionnaire. All patients had a diagnosis of borderline personality disorder according to the Diagnostic and Statistical Manual of Mental Disorders, Revised Third Edition, criteria. This group scored highly on novelty-seeking and harm avoidance scales and moderately on reward dependence. There was a significant reduction in harm avoidance after 12 months of psychotherapy with a further reduction after 2 years in therapy. Although at variance with Cloninger's original prediction of low harm avoidance in histrionic and borderline patients, results are consistent with other studies in this patient group. The paradox of "self-harmers" scoring highly on harm avoidance may be explained by recognition of the intensity of "psychic pain" in this group. Self-harming behaviors may frequently be motivated by avoidance of a "greater harm" in terms of the inner psychic reality for these patients. Reduction in harm avoidance with psychotherapy could suggest an impact of treatment on temperament or may indicate that the harm avoidance construct is influenced by state variables such as mood. | en | apollo | train |
depression /dipresh′ n/ L, _deprimere,_ to press down], **1.depressed fracture, a break in the skull in which bone fragments are pushed below the normal surface of the skull.See also [**depression**.** pertaining to an emotional condition characterized by emotional dejection, loss of initiative, listlessness, loss of appetite, and concentration difficulty.**3.deposition /dep′ zish′ n/ L, _deponere,_ to lay down], (in law) sworn pretrial testimony given by a witness in response to oral or written questions and cross-examination. The deposition is transcribed and may be used for further pretrial investigation. It may also be presented at the trial if the witness cannot be present. Compare [**discovery,** **interrogatories**. deposition/testimony, a nursing intervention from the Nursing Interventions Classification (NIC) defined as the provision of recorded sworn testimony for legal proceedings based upon knowledge of the case. See also **Nursing Interventions Classification**. depot /dē′p , dep′ / [Fr, depository], **1. ** _n,_ any area of the body in which drugs or other substances such as fat are stored and from which they can be distributed. **2. ** _adj,_ (of a drug) injected or implanted to be slowly absorbed into the circulation. depot injection, an intramuscular injection of a drug in an oil suspension that results in a gradual release of the medication over several days. depressant /dipres′ nt/ [L, _deprimere,_ to press down], **1. ** _adj,_ (of a drug) tending to decrease the function or activity of a system of the body. **2. ** _n,_ such a drug, for example, a cardiac depressant, central nervous system depressant, or respiratory depressant. depressed L, _deprimere,_ to press down], **1. ** pertaining to a body structure that has been forced below the surface of surrounding parts, as in a skull fracture. **2. ** pertaining to a condition in which general body activity is diminished, as in depressed urine output during dehydration. **3. ** pertaining to an emotional condition characterized by emotional dejection, loss of initiative, listlessness, loss of appetite, and concentration difficulty. See also [**depression**. depressed fracture, a break in the skull in which bone fragments are pushed below the normal surface of the skull. depression /dipresh′ n/ L, _deprimere,_ to press down], **1.**2.** downward or inward displacement.**3.** a decrease of vital functional activity.**4.** a mood disturbance characterized by feelings of sadness, despair, and discouragement resulting from and normally proportionate to some personal loss or tragedy.**5. | en | apollo | train |
Rosmarinic acid inhibits the formation of reactive oxygen and nitrogen species in RAW264.7 macrophages.
Antioxidant action of Rosmarinic acid (Ros A), a natural phenolic ingredient in many Lamiaceae herbs such as Perilla frutescens, sage, basil and mint, was analyzed in relation to the Ikappa-B activation in RAW264.7 macrophages. Ros A inhibited nitric oxide (NO) production and inducible nitric oxide synthase (iNOS) protein synthesis induced by lipopolysaccharide (LPS), and also effectively suppressed phorbol 12-myristate 13-acetate (PMA)-induced superoxide production in RAW264.7 macrophages in a dose-dependent manner. Peroxynitrite-induced formation of 3-nitrotyrosine in bovine serum albumin and RAW264.7 macrophages were also inhibited by Ros A. Moreover, Western blot analysis demonstrated that LPS-induced phosphorylation of Ikappa-Balpha was abolished by Ros A. Ros A can act as an effective protector against peroxynitrite-mediated damage, and as a potent inhibitor of superoxide and NO synthesis; the inhibition of the formation of reactive oxygen and nitrogen species are partly based on its ability to inhibit the serine phosphorylation of Ikappa-Balpha. | en | apollo | train |
GmFT2a expression is associated with flowering induction and maintenance. Therefore, GmFT2a is a potential target gene for soybean breeding, with the aim of increasing geographic adaptation of this crop. | en | apollo | train |
The circadian system regulates rhythmically most of the mammalian physiology in synchrony with the environmental light/dark cycle. Alteration of circadian clock gene expression has been associated with tumour progression but the molecular links between the two mechanisms remain poorly defined. Here we show that Stra13 and Dec2, two circadian transcriptional regulators which play a crucial role in cell proliferation and apoptosis are overexpressed and no longer rhythmic in serum shocked fibroblasts treated with CoCl2, a substitute of hypoxia. This effect is associated with a loss of circadian expression of the clock genes Rev-erbα and Bmal1, and the clock-controlled gene Dbp. Consistently, cotransfection assays demonstrate that STRA13 and DEC2 both antagonize CLOCK: BMAL1 dependent transactivation of the Rev-erbα and Dbp promoters . Using a transplantable osteosarcoma tumour model, we show that hypoxia is associated with altered circadian expression of Stra13, Dec2, Rev-erbα, Bmal1 and Dbp in vivo. These observations collectively support the notion that overexpression of Stra13 and Dec2 links hypoxia signalling to altered circadian clock gene expression.
The Clock mutation resulted in extreme reduction of Dec1 expression in kidney, heart, and skeletal muscle but not in liver, whereas it strongly repressed Dec2 expression in liver, kidney, and heart, while Dec2 expression in skeletal muscle remained rhythmic. Per2 also showed the tissue-dependent disruption of the rhythmicity by Clock mutation, whereas rhythmic expression of Dbp in Clock mutant mice disappeared in all tissues examined. Npas2, a structurally and functionally related gene to Clock, showed significant levels of expression in the liver and kidney with a robust rhythmicity, which was also affected by Clock mutation. These marked changes in the Dec1 and Dec2 expression, as well as in the Per2, Dbp, and Npas2 expression in the periphery by Clock mutation, indicated that CLOCK plays a major role in the expression of these genes in most tissues. | en | apollo | train |
Bifidobacterium infantis: Is It Only for Babies?
Bifidobacterium infantis (B. infantis) is a probiotic bacterium. It is common in some, but not all, breast-fed infants.
Like other Bifidobacterium species, B. infantis is a Gram-positive, non-motile, non-spore forming, rod-shaped lactic-acid bacteria.
What is Special About Bifidobacterium infantis?
B. infantis, as it is commonly known, is actually a sub-species of the Bifidobacterium longum species, but since products and supplements still refer to it separately, that’s what this website is doing to minimize confusion.
This probiotic is more specifically suited to the intestinal environment of breast-fed infants because it prefers to consume the prebiotic human milk oligosaccharides (HMO’s) found in human breast milk over other sources of energy.
It can, however, utilize other carbohydrates commonly found in a whole-foods diet of teens and adults, similar to other Bifidobacterium species of bacteria.
B. infantis generally survives stomach and bile acids, and is generally able to adhere to intestinal tissues.
B. infantis produces predominantly acetic acid, with other acid production more dependent on the type of prebiotic food it consumes.
Most B. infantis produce bacterocin-like inhibitory substances against pathogenic bacteria, and some strains are able to produce the B-vitamins thiamine (B1), nicotinic acid (a B3 derivative) and folate.
To show the versatility of this probiotic bacterium, B. infantis IM1 in a supplemented infant formula reduced diarrhea episodes yet lowered constipation incidence; this is a GREAT example of how probiotics do not have one single action like a drug and can improve the functioning of the body.
In the double-blind, randomized, multicenter, controlled clinical trial, probiotic supplementation's trend to reduce diarrhea episodes reached statistical significance after 8 weeks. Constipation incidence was higher, with a lower stool frequency, in infants that did not receive the probiotic. The probiotic was deemed to be safe and well tolerated along with the clinical improvements.
With a name like infantis, you would expect it to be harmless. So far the research shows that it is safe, and it is on the European QPS (Qualified Presumption of Safety) list along with other bifidobacteria.
One strain is the most famous of all at this time and it is B. infantis 35624 found in Align and Alflorex. Read about this special 35624 strain here.
Another strain was found not only to have probiotic probiotic properties in vitro, but also to be able to be incorporated into yogurt and survive below zero (C and F) temperatures for 60 days as frozen yogurt.
What is the Probiotic Potential of B. infantis?
As you can see from the information above, actions of B. infantis are strain-specific. Read about the 35624 strain here.
Where Can You Find Bifidobacterium infantis?
One of the most widely studied strains of this species is “Bifantis”, B. infantis 35624, found in the probiotic supplement Align. (link takes you to my review of it) and in Alflorex (link takes you to my review of it).
Many products, such as Probifia Pearls, (link takes you to my review of it) contain undisclosed strains of B. infantis.
Return to the Bifidobacterium page.
Go to the B. infantis 35624 page. | en | apollo | train |
Altered emotional behaviors in the diabetes mellitus OLETF type 1 congenic rat.
GPR10 is a G-protein-coupled receptor expressed in thalamic and hypothalamic brain regions, including the reticular thalamic nucleus (RTN) and periventricular nucleus (Pev), and the endogenous ligand for this receptor, prolactin-releasing peptide (PrRP), has demonstrated regulatory effects on the stress response. We produced a congenic rat by introducing the Dmo1 allele from the OLETF rat which encodes the amino acid sequences of GPR10 with a truncated NH2-terminus, into the Brown-Norway background. Using receptor autoradiography, we determined a lack of specific [125I]PrRP binding in the RTN and Pev of these mutant rats compared to the control rats. Furthermore, intracerebroventricular injection of PrRP did not induce a significant increase of c-fos-like immunoreactivity in the paraventricular nucleus of the mutant rats compared to the control rats. The mutant rats also displayed a less anxious-like phenotype in three behavioral-based models of anxiety-like behavior (open field, elevated plus maze and defensive withdrawal test). These data show the mutant congenic rat, of which GPR10 neither binds nor responds to PrRP, expresses less anxious-like phenotypes. On the basis of these observations, the GPR10 might be a novel target for the developing new drugs against anxiety and/or other stress-related diseases. | en | apollo | train |
If you or a family member is scheduled for an evaluation at Sarasota Memorial Memory Disorder Clinic, you may have questions about what’s involved. Following are answers to some of the most frequently asked questions.
Before the initial evaluation, our clinic staff will collect information regarding your medical history, medications and symptoms. We can collect this information by mail or by having you download and complete the assessment forms on this page. The doctor uses this information as a basis for the clinical evaluation. The first visit begins with a short series of cognitive screening tests, followed by a meeting with the doctor to review your history and complete a physical exam. If the doctor orders additional testing, we will schedule it at that time.
What additional testing might I need?
The doctor might need lab work to rule out rare causes of memory trouble, brain imaging to evaluate the structure of the brain, or a neuropsychological assessment to understand the strengths and weaknesses of brain function.
The initial visit takes approximately one hour. If lab work or brain imaging are ordered, we will schedule those appointments at your convenience. Neuropsychological testing can take several hours, and is typically scheduled for a whole morning or afternoon. On rare occasions, evaluations can take an entire day or more. When all testing is complete, our clinical team reviews the results and creates a full report for you and your primary care physician. The whole process can take 30 days or more.
Bring your medications. Dress comfortably and bring reading glasses and hearing aids if you use them. The office can sometimes get chilly, so bring a sweater.
What will my final report look like?
We send a detailed report to your primary care doctor, the doctor who referred you for evaluation and other doctors whom you wish to receive results. The Memory Clinic staff will meet with you and your family to explain the results and answer any questions before we send the report to your doctor. We encourage patients to bring family to this meeting or have them available by phone to hear the results and ask questions. The final report will include medical information and recommendations regarding care, safety and community resources. | en | apollo | train |
Lymphocytic vasculitis of the prostate transition zone.
Study Type--Pathology (case series) Level of Evidence 4. What's known on the subject? and What does the study add? Lymphocytic vasculitis of the prostate is an exceedingly rare form of localised vasculitis that presents without systemic involvement, and is illustrated with anecdotal case reports; often as localised polyarteritis nodosa-like vasculitis. True incidence and clinical significance of lymphocytic vasculitis of the prostate in surgical specimens is virtually unknown. The present findings support that lymphocytic vasculitis of the prostate was present in 67 (12.4%) of 540 specimens. Lymphocytic vasculitis of the prostate was present in 14 (93.3%) of 15 specimens with prostatic infarction (P < 0.001) with a risk of 124.68 (OR [odds ratio]; 95% CI [confidence interval] 16.07-967.07) as compared with BPH cases not associated with lymphocytic vasculitis. | en | apollo | train |
Triple-acting Lytic Enzyme Treatment of Drug-Resistant and Intracellular Staphylococcus aureus.
Multi-drug resistant bacteria are a persistent problem in modern health care, food safety and animal health. There is a need for new antimicrobials to replace over used conventional antibiotics. Here we describe engineered triple-acting staphylolytic peptidoglycan hydrolases wherein three unique antimicrobial activities from two parental proteins are combined into a single fusion protein. This effectively reduces the incidence of resistant strain development. The fusion protein reduced colonization by Staphylococcus aureus in a rat nasal colonization model, surpassing the efficacy of either parental protein. Modification of a triple-acting lytic construct with a protein transduction domain significantly enhanced both biofilm eradication and the ability to kill intracellular S. aureus as demonstrated in cultured mammary epithelial cells and in a mouse model of staphylococcal mastitis. Interestingly, the protein transduction domain was not necessary for reducing the intracellular pathogens in cultured osteoblasts or in two mouse models of osteomyelitis, highlighting the vagaries of exactly how protein transduction domains facilitate protein uptake. Bacterial cell wall degrading enzyme antimicrobials can be engineered to enhance their value as potent therapeutics. | en | apollo | train |
Some women may even need surgery to repair the injury.The bleeding can be spotting, or it can be a heavy flow or even clots.This can be very painful, but not always immediately as sexual arousal can blunt the pain response.The vagina or the vestibule (vaginal opening) is usually the location of the injury.This chapter applies to women who are not pregnant. If you are pregnant and have bleeding after sex, you should contact your doctor or midwife immediately as there is a much different list of items to consider, some which can be very serious. For women who are not pregnant, there are only a few conditions that cause bleeding after sex, so working through the list and coming up with a diagnosis and treatment plan should not be challenging. The blood is coming from one of four sources: vulva, vagina, cervix, or uterus. Some spotting or a light flow can happen after the first heterosexual penetrative sex with a penis due to tearing of the hymen, but this should be a onetime occurrence. There is not a lot of literature on this subject, but based on what there is and my experience, here are the most common medical causes of bleeding with/after sex (from medically most urgent to least):
* **CERVICAL CANCER:** Approximately 11 percent of women with cervical cancer have bleeding after sex, so cancer must always be ruled out before another diagnosis is made. Fortunately, most women with bleeding after sex don't have cancer. If your last cervical screening was negative, cancer is very unlikely. Most experts consider a normal cervical screening within the past two years adequate. However, if you have a previous history of an abnormal Pap smear or are HPV positive, then more definitive steps may be needed to rule out cancer. * **TRAUMA/INJURY:** A laceration (a tear) is more common with nonconsensual sex or consensual use of a sex toy, but it can happen simply from penile penetration (although rare). The vagina or the vestibule (vaginal opening) is usually the location of the injury. This can be very painful, but not always immediately as sexual arousal can blunt the pain response. The bleeding can be spotting, or it can be a heavy flow or even clots. Some women may even need surgery to repair the injury.* **INFECTION:** Chlamydia and mycoplasma are bacteria that can cause inflammation of the cervix and can lead to spotting.Trichomoniasis can cause a bloody vaginal discharge because it causes so much inflammation.* **GSM:** The vaginal mucosa (skin) becomes more fragile and can be traumatized very easily, even with a well-lubricated, gentle touch. | en | apollo | train |
To be eligible, patients needed to have 10% or more of their body surface area affected by psoriasis, a PASI score of 12 or more, or an IGA score of 3 or more. Patient characteristics were generally similar across the trials, with some differences. For example, FIXTURE and ERASURE had a lower proportion of patients who had received prior biological treatments (range: 10.7% to 29.4% across trials and trial arms) than JUNCTURE and FEATURE (21.3% to 47.5% across trials and trial arms); and FEATURE and ERASURE had a higher proportion of patients for whom a prior biological had failed. Across trials, previous systemic therapies (including methotrexate) ranged from 33.9% (FEATURE, secukinumab 300 mg arm) to 62.6% (FIXTURE, etanercept arm).
The company presented clinical trial results for secukinumab both at 150 mg and 300 mg. The marketing authorisation, however, is only for 300 mg. Therefore, this final appraisal determination presents only the results for the licensed dose (300 mg) (hereafter referred to as secukinumab).
The co‑primary outcome measures in all 4 placebo‑controlled trials were measured at week 12: PASI 75 (that is, a 75% reduction from baseline in PASI score), and an IGA score of 0 or 1 (indicating clear or almost clear of disease). The PASI response was used in the model and the network meta‑analysis. Therefore, this final appraisal determination presents results only for PASI outcomes. The company analysed the data using intention‑to‑treat methods. | en | apollo | train |
Brucella sp. vertebral osteomyelitis with intercurrent fatal Staphylococcus aureus toxigenic enteritis in a bottlenose dolphin (Tursiops truncatus).
A previously beach-stranded, juvenile, male, bottlenose dolphin (Tursiops truncatus) was diagnosed with vertebral osteomyelitis of unknown etiology. Antemortem serological testing suggested past or current Brucella sp. infection; however, this could not be confirmed prior to death despite multiple isolation attempts from aspirates, blood, and biopsies. Systemic antibiotics were administered for over a year to control the suspected infection; however, the animal succumbed peracutely to infection by a highly pathogenic, enterotoxin-secreting Staphylococcus sp. Gross necropsy findings included a fistulous tract leading to locally extensive osteomyelitis of a coccygeal vertebra with sequestra and osteophytes from which a Brucella species was isolated. Histopathological examination of intestine revealed pseudomembranous enteritis with a uniform population of intraluminal Gram-positive cocci. Staphylococcus aureus was isolated in pure culture from the intestine and tested positive for the staphylococcal enterotoxin A gene by polymerase chain reaction analysis. Serum taken shortly before death had endotoxin and elevated antibody titers to staphylococcal enterotoxin A when compared to samples collected during a period of apparent good health 18 months earlier. The isolation of a pyrogenic toxin superantigen-producing staphylococcal isolate, clinical signs, and diagnostic findings in this animal resembled some of those noted in human toxic shock syndrome. The present case highlights the clinical challenges of treating chronic illnesses, complications of long-term antibiotic use, and promotion of pathogenic strains in cases of prolonged rehabilitation of marine mammals. | en | apollo | train |
Nano-graphene oxide-UCNP-Ce6 covalently constructed nanocomposites for NIR-mediated bioimaging and PTT/PDT combinatorial therapy.
NIR light-induced imaging-guided cancer therapy is an encouraging route in the cancer theranostic field. Herein, we describe a novel nanoscale proposal, which is established by covalently implanting core-shell structured upconversion nanoparticles (UCNPs) with nanographene oxide (NGO) by a process utilizing polyethylene glycol (PEG), and consequently loading Chlorin e6 (Ce6) onto the surface of NGO. The acquired NGO-UCNP-Ce6 (NUC) nanocomposites can not only be employed as upconversion luminescence (UCL) imaging probes of cells and whole-body animals with high contrast for diagnosis, but also can generate reactive oxygen species (ROS) under 808 nm light excitation for photodynamic therapy (PDT); over and above, they can swiftly and proficiently translate the 808 nm photon into thermal energy for photothermal therapy (PTT). An extraordinarily enhanced and synchronized therapeutic effect paralleled to the individual PTT or PDT is achieved, rendering extraordinary therapeutic effectiveness for cancer treatment. Consequently, profiting from this inimitable multifunctional nanohybrid, the NUCs synthesized here are encouraging as a cohesive theranostic probe for impending UCL imaging-guided combinatorial PDT/PTT. | en | apollo | train |
Contrast media-induced oliguric renal failure.
Seven patients had acute oliguric renal failure after intravenous urography (2), celiac arteriography (2), or cardiac angiography (3). Diatrizoate meglumine was the contrast media used in all of the cases. These patients had an average age of 63 years and six were 55 years of age or older. Diabetes mellitus, negative fluid balance before the procedure, underlying renal insufficiency, and hypertension were common, being present in three, four, five, and six of the patients respectively . Anuria or oliguria occurred within 24 hours of the procedure and persisted from 36 to 96 hours (72 hours average). The serum creatinine level rose significantly in all of the patients and reached a peak in two to seven days after the procedure. In six patients, recovery was complete by two to three weeks. The seventh patient experienced only partial recovery. These cases taken together with a mounting number of recent reports suggest that contrast media-induced oliguric renal failure is more common than generally believed. Diabetes mellitus, older age, and underlying renal insufficiency seem to be important predisposing factors. | en | apollo | train |
It concluded that entrectinib could be clinically effective, but the limited data for each of the tumour types, the immature survival data and the lack of trial data directly comparing entrectinib with established management meant the size of this benefit was difficult to measure.
## The population eligible for entrectinib is broader than the trial population so entrectinib's clinical effectiveness in some groups is unknown
There was limited evidence available on tumour types that have NTRK fusions. The clinical evidence for entrectinib was limited to the 13 tumour types included in the company's clinical trials. The ERG's clinical advisers suggested that it was plausible that NTRK gene fusions could be present in over 400 tumour types. The ERG used a Bayesian hierarchical modelling framework (see section 3.15) to explore the expected probability of response to entrectinib in tumour types not represented in the trial data. The results showed a very wide confidence interval around the probability of response for tumour types not included in the trial. This showed the high uncertainty around the response (exact results are confidential and cannot be reported here). The committee considered that the lack of any data for many other tumour sites meant there was substantial uncertainty about entrectinib's clinical and cost effectiveness for all those potentially eligible for treatment as defined by the marketing authorisation. | en | apollo | train |
This is a review of an interesting study from 1997 (published in Stroke) that illustrates how vasospastic arteries in a rat subarachnoid hemorrhage model looks like under the scanning electron microscope.
Basilar artery of: A. saline-injected control rats; B. hemolysate-injected rats; arrowheads = PICA; note the narrowing and corrugation seen in the basilar artery of the hemolysate-injected rats.
Vasospasm (demonstrated as corrugation in the casted vessels) is seen in the major arteries (A) as well as the small arteries (B).
The researchers also performed conventional SEM. A and B are normal vessels while C and D are hemolysate-induced vasospastic blood vessels. A and C are low magnification, B and D are high magnification.
The normal vessels (A) show that the inner surface is very smooth and the vessel wall is thin, and (B) the endothelial nuclei are clearly observed, projecting into the inner surface at regular intervals of 10-20 um.
The vasospastic vessels (C) shows that the smooth muscle layer is thicker, corrugation is observed and (D) many humps are sandwiched and flattened between hills formed by the endothelial cells.
Cast model shows corrugation, characteristic folds of endothelial cells at regular intervals and indentations of endothelial cell nuclei at each peak of those folds. These indentations correspond to the humps seen in conventional SEM analysis. The mechanical force of corrugation compressed the endothelial cells, flattened their nuclei and likely disturbed their function. These physical alterations cause narrowing of the vessels, disturbs local blood flow, and may disturb blood coagulation and adhesion of WBC and platelets to the endothelium. This may be a mechanism that explains thrombus inflammation and inflammatory response in these diseased vessels.
Their research also showed that arteries exposed to greater amount of hemolysate exhibit more severe vasospasm.
Ono, S. et al. “Three-Dimensional Analysis Of Vasospastic Major Cerebral Arteries In Rats With The Corrosion Cast Technique”. Stroke 28.8 (1997): 1631-1638.
BAVM (brain AVM) – preferred over cerebral AVM (CAVM), abnormal tangle of vessels that results in arteriovenous shunting (nonutritive blood flow) demonstrated by 4-vessel cerebral contrast angiography.
venous ectasia – any change in venous caliber in the venous runoff or drainage from BAVM with a >2-fold caliber change in any draining venous channel.
“Reporting Terminology For Brain Arteriovenous Malformation Clinical And Radiographic Features For Use In Clinical Trials”. Stroke 32.6 (2001): 1430-1442. Web.
Time to irreversible infarction? What predicts?
Intra-arterial vs Systemic Thrombolysis for AIS (SYNTHESIS EXP) study[v] – 2010 2 groups of 181 patients; IV rtPA vs mech thrombectomy or IA therapy within 4.5h; of IA patients, 60% treated with rtPA infusion and microguidewire thrombus fragmentation, 31% with thrombectomy devices, 13% with stent retrievers; no benefit observed, no disability at 90d (30.4% vs 34.8% p=0.037) no safety differences symptomatic ICH (5.5% vs 5.5% p=0.99) and mortality 7.7% vs 6.1% p=0.53.
Penumbral imaging may take up to 30 minutes – will this negate any efficacy advantage?
Current AHA/ASA guidelines – IV rtPA administer to all eligible patients as quickly as possible (door-to-needle time <60 mins) in the 0-3h window (Class 1-A), in the 3-4.5 window (class I-B) and even if considering other adjunctive therapies (Class 1-A). Reduce and avoid delays to reperfusion (Class 1-A); IA thrombolyssi with rtPA in carefully selected patients with MCA occlusion within 6h onset (Class 1-B), based on MELT and PROACT II). Recommend stent retrievesr over earlier generation coil retrievers (Class I-A). Weak recommendations for clinical efficacy of mechanical thrombectomy (Class IIa-B) – does not include the 4 new trials in 2015.
[i] Tissue plasminogen activator for acute ischemic stroke. N Engl J Med. 1995;333(24):1581-1587.
[ii] Hacke W, Kaste M, Bluhmki E, et al. Thrombolysis with alteplase 3 to 4.5 hours after acute ischemic stroke. N Engl J Med. 2008;359(13):1317-1329.
[iii] Furlan A, Higashida R, Wechsler L, et al. Intra-arterial prourokinase for acute ischemic stroke. JAMA. 1999;282(21):2003-2011.
[iv] Broderick JP, Palesch YY, Demchuk AM, et al. Endovascular therapy after intravenous t-PA vs t-PA alone for stroke. N Engl J Med. 2013;368(10):893-903.
[v] Ciccone A, Valvassori L, Ponzio M, et al. Intra-arterial or intravenous thrombolysis for acute ischemic stroke? J Neurointerv Surg. 2010;2(1):74-79.
[vi] Nogueira RG, Lutsep HL, Gupta R, et al. Trevo vs Merci retrievers for thrombectomy revascularisation of large vessel occlusions in acute ischaemic stroke (TREVO 2). Lancet. 2012;380(9849):1231-1240.
[vii] Saver JL, Jahan R, Levy EI, et al. Solitaire flow restoration device vs the Merci retriever in patients with acute ischaemic stroke (SWIFT). Lancet. 2012;380(9849):1241-1249.
[viii] Berkhemer OA, Fransen PS, Beumer D, et al. A randomized trial of intra-arterial treatment for acute ischemic stroke. N Engl J Med. 2015;372(1):11-20.
[ix] Goyal M, Demchuk AM, Menon BK, et al. Randomized assessment of rapid endovascular treatment of ischemic stroke. N Engl J Med. 2015;372(11):1019-1030.
[x] Campbell BC, Mitchell PJ, Kleinig TJ, et al. Endovascular therapy for ischemic stroke with perfusion-imaging selection. N Engl J Med. 2015;372(11):1009-1018.
[xi] Saver JL, Goyal M, Bonafe A, et al. SOLITAIRE FR with the Intention for Thrombectomy as Primary Endovascular Treatment for Acute Ischemic Stroke. Paper presented at: International Stroke Conference; February 2015; Nashville, TN.
[xii] Lansberg MG, Straka M, Kemp S, et al. MRI profile and response to endovascular reperfusion after stroke (DEFUSE 2). Lancet Neurol. 2012;11(10):860-867.
[xiii] Kidwell CS, Jahan R, Gornbein J, et al. A trial of imaging selection and endovascular treatment for ischemic stroke. N Engl J Med. 2013;368(10):914-923.
Acute Stroke Intervention A Systematic Review – Prabhakaran, S. et al. JAMA. 2015;313(14):1451-1462. doi:10.1001/jama.2015.3058. | en | apollo | train |
Synthesis and characterization of novel trimellitic anhydride isothiocyanate-cross linked chitosan hydrogels modified with multi-walled carbon nanotubes for enhancement of antimicrobial activity.
Novel trimellitic anhydride isothiocyanate was successfully synthesized and utilized in various concentrations to obtain four novel cross linked chitosan hydrogels H<sub>1</sub>-H<sub>4</sub>. Three multi-walled carbon nanotube (MWCNT) biocomposites based on H<sub>1</sub> were also prepared. Their structures were proven by elemental analysis, FTIR, XRD, SEM and TEM. They were found to be pH- and temperature-responsive materials. Their swell abilities appreciably depend on their cross linking moiety contents and MWCNTs concentration. They are more potent against Bacillis subtilis, Streptococcus pneumoniae, Escherichia coli, Pseudomonas aeruginosa, Geotrichum candidum, Candida albicans, Aspergillus fumigatus, and Syncephalastrum racemosum than chitosan as judged by their greater inhibition zone diameters and their lower minimum inhibitory concentration (MIC) values. Their antimicrobial activities increased with increasing their cross linking moiety contents. They showed a better potency against Gram-positive than Gram-negative bacteria. The hydrogel H<sub>4</sub> and H<sub>1</sub>/MWCNT composites have comparable or even higher activities than the reference bactericides or fungicides against some of tested microbes. Thus, combination between chitosan and the functionalized groups of the incorporated cross linker as well as MWCNTs in one system has efficiently improved the chitosan features. It is a good way for attaining adequate systems as antimicrobial agents that can be taken as promising candidates in biomedical fields. | en | apollo | train |
Cobalamin inactivation decreases purine and methionine synthesis in cultured lymphoblasts.
The megaloblastic anemia of cobalamin deficiency appears secondary to decreased methionine synthetase activity. Decreased activity of this enzyme should cause 5-methyltetrahydrofolate to accumulate intracellularly, and consequently, decrease purine and DNA synthesis; this is the basis of the "methylfolate trap" hypothesis of cobalamin deficiency. However, only some of the clinical and biochemical manifestations of cobalamin deficiency can be explained by the methylfolate trap. We investigated cobalamin deficiency by treating cultured human lymphoblasts with N2O since N2O inhibits methionine synthetase activity by inactivating cobalamin. We found that 4 h of N2O exposure reduced rates of methionine synthesis by 89%. Rates of purine synthesis were not significantly reduced by N2O when folate and methionine were present at 100 microM in the medium; however, at the physiologic methionine concentration of 10 microM, N2O decreased rates of purine synthesis by 33 and 57% in the presence of 100 microM folate and in the absence of folate, respectively. The dependency of rates of purine synthesis on methionine availability would be expected in cells with restricted methionine synthetic capacity because methionine is the immediate precursor of S-adenosylmethionine, a potent inhibitor of 5-methyltetrahydrofolate synthesis; methionine serves as a source of formate for purine synthesis; and rates of purine synthesis are dependent on the intracellular availability of essential amino acids. We conclude that cobalamin inactivation decreases purine synthesis by both methylfolate trapping and reduction of intracellular methionine synthesis. | en | apollo | train |
Drugs used to treat erection problems (e.g., Viagra) can worsen these side effects._ Teach patients taking a 5-ARI or alpha blocking drug to keep all appointments for follow-up laboratory testing because both drug classes can cause liver dysfunction.Bedtime dosing may decrease the risk for problems related to hypotension.Nursing Safety Priority
Drug Alert
Remind patients who are being treated with a 5-ARI for BPH that they may need to take it for as long as 6 months before improvement is noticed. Teach them about possible side effects, which include erectile dysfunction (ED), decreased libido (sexual desire), and dizziness due to orthostatic hypotension. Remind them to change positions carefully and slowly. The alpha-adrenergic receptors in prostatic smooth muscle enable the prostate gland to respond to _alpha-1 selective blocking agents,_ such as tamsulosin (Flomax), alfuzosin (Uroxatral), doxazosin (Cardura, Cardura-1 ), terazosin (Hytrin), and silodosin (Rapaflo). Tamsulosin is also available as an over-the-counter (OTC) drug. These drugs relax smooth muscles in the prostate gland, creating less urinary resistance and improved urinary flow. They also cause peripheral vasodilation and reduced peripheral vascular resistance. Nursing Safety Priority
Drug Alert
_If giving alpha blockers in an inpatient setting, assess for orthostatic (postural) hypotension, tachycardia, and syncope ("blackout"), especially after the first dose is given to older men. If the patient is taking the drug at home, teach him to be careful when changing position and to report any weakness, lightheadedness, or dizziness to the health care provider immediately. Bedtime dosing may decrease the risk for problems related to hypotension. Drugs used to treat erection problems (e.g., Viagra) can worsen these side effects._ Teach patients taking a 5-ARI or alpha blocking drug to keep all appointments for follow-up laboratory testing because both drug classes can cause liver dysfunction.A commonly prescribed drug regimen is finasteride and doxazosin.Newer drugs, such as Jalyn, provide a combination of dutasteride and tamsulosin in a once-a-day capsule.Other drugs may be helpful in managing specific urinary symptoms.For example, low-dose oral desmopressin, a synthetic antidiuretic analog, has been used successfully for nocturia (Wang et al., 2011). | en | apollo | train |
TidalHealth Peninsula Regional is a non-profit hospital located in Salisbury, Maryland.
Established in 1897 by Dr. George W. Todd with six beds in an old home, the institution once known as Peninsula General Hospital has grown to contain approximately 300 beds.
It serves nearly 500,000 patients every year in a multitude of specialties. Close to 2,000 babies are born at TidalHealth Peninsula Regional every year. There are approximately 3,300 employees, placing it among Salisbury's largest employers.
Outside of its main hospital location, it includes a network of specialty and family physicians, a network of labs and pharmacies, plus two health complexes in Millsboro, Delaware and Ocean Pines, Maryland.
Steven Leonard has been President/CEO since January 2018.
In January 2020, Peninsula Health System, parent of the then named Peninsula Regional Medical Center, merged with Nanticoke Health Services of Seaford, Delaware. On September 1, 2020, the health system was officially renamed TidalHealth Services. The renaming coincided with a rebranding of all affiliated institutions with the TidalHealth branding.
Medical specialties
Specialties include
Comprehensive Cardiac Care (including Open Heart Surgery and Rehab) at the Guerrieri Heart & Vascular Institute
Comprehensive Cancer Treatment at the Richard A. Henson Cancer Institute
Diagnostic and Imaging Services
Emergency and Trauma Care
Outpatient Surgical Services
Neurosurgery
Orthopaedics (including total joint replacement) and Rehabilitation
Breast Center
Special Care Nursery
Heartburn Treatment Center
Sleep Center
Women's and Children's Services
Wound Care
Outpatient Physical, Occupational and Speech Therapy & Rehabilitation
Pediatric and neonatal services, provided in collaboration with Children's National Medical Center
Psychiatric Services, in partnership with Adventist HealthCare
Access to Clinical Trials (Peninsula Regional is part of the Johns Hopkins Clinical Research Network)
Accreditation
TidalHealth Peninsula Regional is an accredited Hospital and Laboratory by the Joint Commission. Its Joint Commission certifications include Advanced Total Hip and Total Knee Replacement,
Primary Stroke Center, Acute Myocardial Infarction, and Spine Surgery.
References
External links
Official website
Hospitals in Maryland
Hospitals established in 1898 | en | apollo | train |
The afferent nerve breaks up within the capsule, and the terminal fibers ramify between the collagen bundles.Golgi tendon organs are approximately half the size of a muscle spindle and consist of a capsule surrounding a group of collagen fibrils.### Golgi Tendon Organ
Golgi tendon organs are found at the junctions between muscles and the tendons or aponeuroses on which they pull.Intrafusal fibers are narrower than extrafusal fibers and assume two forms. The first is described as a nuclear bag fiber because of the concentration of many nuclei in its centrally expanded portion, and the second, as a nuclear chain fiber because its nuclei are aligned in a single row. The nuclear bag fiber is innervated by a nerve that spirals around the bag, the primary afferent. The nuclear chain fiber is innervated from a primary terminal supplying the central region of the chain and a secondary terminal on either side of the primary (Figure 13-22). The primary terminal is thought to be involved with responses to the degree and rate of stretch, the secondary terminal only with the degree of stretch. Muscle spindle intrafusal fibers retain their efferent supply. FIGURE 13-22 **A,** Photomicrograph of the structure and innervation of a muscle spindle (cat; stained with gold chloride) showing primary annulospiral afferent endings _(right)_ and secondary flower spray endings _(left)_. **B,** The spindle. (For clarity the capsule has been omitted.) Primary annulospiral fibers envelop the nuclear bag and the nuclear chain intrafusal fibers. The flower spray secondary endings are associated with the nuclear chain fiber. _nb,_ Nuclear bag; _n,_ nuclear chain fibers. ( **A,** from Boyd IA: Philos Trans R Soc Lond B Biol Sci 245:81, 1962.) ### Golgi Tendon Organ
Golgi tendon organs are found at the junctions between muscles and the tendons or aponeuroses on which they pull. Golgi tendon organs are approximately half the size of a muscle spindle and consist of a capsule surrounding a group of collagen fibrils. The afferent nerve breaks up within the capsule, and the terminal fibers ramify between the collagen bundles.From this abbreviated account of muscle, its heterogeneity can be appreciated as providing the tremendous adaptation of structure necessary to function, which is especially evident in the muscles of mastication.## Muscles of Mastication
Classically, the muscles of mastication are the masseter, the medial (inferior) pterygoid, the lateral (superior) pterygoid, and the temporalis (Figure 13-23). | en | apollo | train |
Effect of fluids on life span of peripheral arterial lines.
This study examines the effect of two different fluids to maintain peripheral arterial line patency at 1 to 2 ml/hr in a randomized controlled trial. Sixty sick newborn infants requiring ventilatory support and frequent blood gas monitoring were randomly assigned to receive either heparinized normal saline (HNS) or heparinized 5% dextrose water (HD5W) to maintain peripheral arterial line patency. One unit of heparin was added to each mililiter of both solutions. The duration of functional arterial lines, sodium balance, and number of peripheral punctures for blood glucose monitoring were compared using Student's t test for independent samples. HNS peripheral arterial catheters functioned significantly longer than HD5W without increased risk of hypernatremia. We conclude that HNS in arterial catheters is safe, lasts longer, and saves the infant (1500 gm or more) from the unnecessary stress of multiple peripheral punctures for blood glucose measurements, which can be obtained from the arterial catheter if glucose is not part of the infusate. | en | apollo | train |
GAP-43 gene expression is increased in anterior horn cells of amyotrophic lateral sclerosis.
In amyotrophic lateral sclerosis (ALS), neuronal loss and axonal degeneration occur in motor neurons. Although there is limited axonal regeneration, surviving motor neurons send collateral sprouts to denervated muscle fibers. GAP-43, a protein enriched in growth cones and synaptic terminals, is thought to have a role in axonal elongation and synaptogenesis. GAP-43 messenger RNA (mRNA) expression was evaluated in ALS spinal cords using Northern blot analysis and in situ hybridization to assess whether surviving neurons can mount an appropriate response to injury. There was a two- to four-fold increase in GAP-43 mRNA in ALS that localized to the anterior horn cells. The increase in GAP-43 mRNA indicates that the mechanism which leads to degeneration in ALS does not compromise the neuron's capacity for vigorous expression of growth-associated proteins. | en | apollo | train |
Nucleotide sequencing of psoriatic arthritis tissue before and during methotrexate administration reveals a complex inflammatory T cell infiltrate with very few clones exhibiting features that suggest they drive the inflammatory process by recognizing autoantigens.
Psoriatic arthritis is an interesting MHC class I allele associated autoimmune disease where injury is likely mediated exclusively by T cells. We used TCR beta-chain nucleotide sequencing to gain insight into the adaptive immune events responsible for this injury and determine whether the numerous oligoclonal expansions of this disease represent extreme determinant spreading among driving clones that recognize autoantigen or were non-Ag-driven, inflammation-related expansions. Because methotrexate suppresses but does not eliminate this inflammation, we hypothesized that clones persisting during methotrexate treatment would likely drive the inflammation. Seventy-six percent of the T cell clones in active tissue were polyclonal and unexpanded, accounting for 31% of transcripts. They were decreased greatly by methotrexate. Strikingly, most expanded clones in the inflamed joint did not persist during methotrexate treatment, were found only in inflammatory sites, exhibited no structural homology to one another, and were either CD4 or CD8 in lineage, suggesting they were non-autoantigen-driven, inflammation-related expansions. Only 12% of the expanded clones could be grouped into clonal sets distinguished by structurally homologous CDR3 beta-chain amino acid motifs suggesting Ag drive. These were exclusively CD8 in lineage, persisted during methotrexate administration, and were present in both joint fluid and blood implying they were candidate driver clones that recognized an autoantigen. However, a major set of putative driver clones exhibited a previously described EBV-specific beta-chain motif, emphasizing that the dominant feature of the disease was activation of multiple clones apparently lacking specificity for an inciting autoantigen. | en | apollo | train |
Cloning of ubiquitin-activating enzyme and ubiquitin-conjugating enzyme genes from Gracilaria lemaneiformis and their activity under heat shock.
To study the response of Gracilaria lemaneiformis to heat stress, two key enzymes - ubiquitin-activating enzyme (E1) and ubiquitin-conjugating enzyme (E2) - of the Ubiquitin/26S proteasome pathway (UPP) were studied in three strains of G. lemaneiformis-wild type, heat-tolerant cultivar 981 and heat-tolerant cultivar 07-2. The full length DNA sequence of E1 contained only one exon. The open reading frame (ORF) sequence was 981 nucleotides encoding 326 amino acids, which contained conserved ATP binding sites (LYDRQIRLWGLE, ELAKNVLLAGV, LKEMN, VVCAI) and the ubiquitin-activating domains (VVCAI…LMTEAC, VFLDLGDEYSYQ, AIVGGMWGRE). The gene sequence of E2 contained four exons and three introns. The sum of the four exons gave an open reading frame sequence of 444 nucleotides encoding 147 amino acids, which contained a conserved ubiquitin-activating domain (GSICLDIL), ubiquitin-conjugating domains (RIYHPNIN, KVLLSICSLL, DDPLV) and ubiquitin-ligase (E3) recognition sites (KRI, YPF, WSP). Real-time-PCR analysis of transcription levels of E1 and E2 under heat shock conditions (28°C and 32°C) showed that in wild type, transcriptions of E1 and E2 were up-regulated at 28°C, while at 32°C, transcriptions of the two enzymes were below the normal level. In cultivar 981 and cultivar 07-2 of G. lemaneiformis, the transcription levels of the two enzymes were up-regulated at 32°C, and transcription level of cultivar 07-2 was even higher than that of cultivar 981. These results suggest that the UPP plays an important role in high temperature resistance of G. lemaneiformis and the bioactivity of UPP is directly related to the heat-resistant ability of G. lemaneiformis. | en | apollo | train |
Steven Laureys (born 24 December 1968 in Leuven) is a Belgian neurologist. He is recognized worldwide as a leading clinician and researcher in the field of neurology of consciousness.
Career
Prof. Laureys graduated as a Medical Doctor from the Vrije Universiteit Brussel, Belgium, in 1993. While specializing in neurology he entered a research career and obtained his MSc in Pharmaceutical Medicine working on pain and stroke using in vivo microdialysis and diffusion MRI in the rat (1997). Drawn by functional neuroimaging, he moved to the Cyclotron Research Center at the University of Liège, Belgium, where he obtained his PhD studying residual brain function in the vegetative state in 2000. He is board-certified in neurology (1998) and in end-of-life and palliative medicine (2004).
He currently leads the Coma Science Group at the Cyclotron Research Centre of the University of Liège, Belgium. He is clinical professor of neurology, at the Liège University Hospital and Research Director at the National Fund for Scientific Research.
Laureys is chair of the World Federation of Neurology's Coma and Disorders of Consciousness Research Group and of the European Neurological Society's Subcommittee on Coma and Disorders of Consciousness. Since 2009, he is invited professor at the Royal Academy of Belgium. In 2010, he was invited to give a research lecture at Nobel Forum.
Research
His team assesses the recovery of neurological disability and of neuronal plasticity in severely brain damaged patients with altered states of consciousness by means of multimodal functional neuroimaging. It aims at characterizing the brain structure and the residual cerebral function in patients who survive a severe brain injury: patients in coma, vegetative state, minimally conscious state and locked in syndrome.
The importance of this project is twofold. First, these patients represent a problem in terms of diagnosis, prognosis, treatment and daily management. Second, these patients offer the opportunity to explore human consciousness, which is presently one major conundrum neurosciences have to solve. Indeed, these patients present a complete, nearly graded, range of conscious states from unconsciousness (coma) to full awareness (locked-in syndrome).
This research confronts clinical expertise and bedside behavioral evaluation of altered states of consciousness with state-of-the-art multimodal imaging combining the information from positron emission tomography (PET), functional magnetic resonance imaging (fMRI), structural MRI, electroencephalography (EEG), event related potential (ERP) and transcranial magnetic stimulation (TMS) data.
Selected publications
"A theoretically based index of consciousness independent of sensory processing and behavior", Casali AG, Gosseries O, Rosanova M, Boly M, Sarasso S, Casali KR, Casarotto S, Bruno MA, Laureys S, Tononi G, Massimini M. Science Translational Medicine 5 (2013)
"Pupil responses allow communication in locked-in syndrome patients", Stoll J, Chatelle C, Carter O, Koch C, Laureys S, Einhäuser W. Current Biology 23 (2013) R647-648
"Disorders of consciousness: responding to requests for novel diagnostic and therapeutic interventions", Jox RJ, Bernat JL, Laureys S, Racine E. Lancet Neurology 11 (2012) 732–738
"Bedside detection of awareness in the vegetative state: a cohort study", Cruse D, Chennu S, Chatelle C, Bekinschtein TA, Fernández-Espejo D, Pickard JD, Laureys S, Owen AM. Lancet 278 (2011) 2088–2094
"Willful modulation of brain activity in disorders of consciousness", Monti MM, Vanhaudenhuyse A, Coleman MR, Boly M, Pickard JD, Tshibanda L, Owen AM, Laureys S. New England Journal of Medicine 362 (2010) 579–589
"The changing spectrum of coma", Laureys S, Boly M, Nature Clinical Practice Neurology 4 (2008) 544–546
"Perception of pain in the minimally conscious state with PET activation: an observational study", Boly M, Faymonville ME, Schnakers C, Peigneux P, Lambermont B, Phillips C, Lancellotti P, Luxen A, Lamy M, Moonen G, Maquet P, Laureys S, Lancet Neurology, 7 (2008) 1013–1020
"Baseline brain activity fluctuations predict somatosensory perception in humans", Boly M, Balteau E, Schnakers C, Degueldre C, Moonen G, Luxen A, Phillips C, Peigneux P, Maquet P, Laureys S Proceedings of the National Academy of Sciences (USA), 104 (2007) 12187-12192
"Detecting awareness in the vegetative state", Owen AM, Coleman MR, Boly M, Davis MH, Laureys S, Pickard J Science 313 (2006) 1402
"Death, unconsciousness and the brain", Laureys S Nature Reviews Neuroscience, 11 (2005) 899–909
"Brain function in coma, vegetative state, and related disorders", Laureys S, Owen A, Schiff N, Lancet Neurology 3 (2004) 537–46
"Restoration of thalamocortical connectivity after recovery from persistent vegetative state", Laureys S, Faymonville ME, Luxen A, Lamy M, Franck G, Maquet P, Lancet 355 (2000) 1790–1791
The Neurology of Consciousness, ed. Laureys S and Tononi G, Academic Press, New York, 2008
The boundaries of consciousness, ed. Laureys S, Elsevier, Amsterdam, 2006
References
External links
Coma Science Group (with downloadable papers)
Steven Laureys' page at the University of Liège
Cyclotron Research Centre
Liège University Hospital
1968 births
Living people
Belgian neuroscientists
Consciousness researchers and theorists
Cognitive neuroscientists
Materialists
Belgian medical writers
Belgian science writers | en | apollo | train |
The compartmentalization and transport of proteins and solutes across the endothelium is a critical biologic function altered during inflammation and disease, leading to pathology in multiple disorders. The impact of tissue damage and subsequent extracellular matrix (ECM) fragmentation in regulating this process is unknown. We demonstrate that the collagen-derived matrikine acetylated proline-glycine-proline (N-α-PGP) serves as a critical regulator of endothelial permeability. N-α-PGP activates human endothelial cells via CXC-chemokine receptor 2 (CXCR2), triggering monolayer permeability through a discrete intracellular signaling pathway. In vivo, N-α-PGP induces local vascular leak after subcutaneous administration and pulmonary vascular permeability after systemic administration. Furthermore, neutralization of N-α-PGP attenuates lipopolysaccharide-induced lung leak. Finally, we demonstrate that plasma from patients with acute respiratory distress syndrome (ARDS) induces VE-cadherin phosphorylation in human endothelial cells, and this activation is attenuated by N-α-PGP blockade with a concomitant improvement in endothelial monolayer impedance. These results identify N-α-PGP as a novel ECM-derived matrikine regulating paracellular permeability during inflammatory disease and demonstrate the potential to target this ligand in various disorders characterized by excessive matrix turnover and vascular leak such as ARDS. | en | apollo | train |
Traumatic brain injury survivors or those who have a loved one who is a survivor are probably aware of the long-lasting residuals and ongoing expenses one can suffer. Brain injuries that result in cognitive impairments such as memory loss, speaking, mobility problems, concentration and focus issues, or other problems severely alter a person’s lifestyle. When you can no longer work and pay for those expenses, what are your options?
Health insurance: If you are fortunate enough to have health insurance, you should have coverage for most of your medical expenses. However, when it comes to rehabilitation, some insurance policies have limitations, such as only allowing two to six weeks of therapy. With most brain injuries, therapy is crucial to recovery. Also, if your insurance is through your employer, and you lose your job, your coverage may be cut off.
Disability insurance: If your employer provides short-term disability, you may receive a portion of your salary for the first six months of absence. If long-term disability is provided, it will usually take over after the first six months of absence and will continue until retirement.
SSDI/SSI: Social Security disability may be applied for if you are no longer able to work as a result of your impairments. Various rules apply and criteria must be met to qualify, and the process takes a very long time. If you qualify, you receive a monthly benefit check, and Medicare insurance after a period of time.
Workers’ Compensation: If you were injured on the job, you are entitled to workers’ comp insurance. Every employer is required to carry this insurance. Workers’ comp insurance should pay a portion of your salary while you are unable to work and for medical care. It also may result in long-term benefits or even a lump-sum settlement; however, workers’ comp insurance follows strict guidelines when it comes to medical care.
Keep in mind that if you were injured at work by the recklessness or negligence of your employer, you may bypass workers’ comp, and retain an attorney to sue your employer for full damages in a civil court. Once you have agreed to workers’ comp terms, you forfeit your right to sue your employer.
If your brain injury was the result of any other accident that was the fault of another party, you have the right to sue for damages in a civil court. | en | apollo | train |
However, non-invasive imaging may be equally useful for the diagnosis of effusive-constrictive pericarditis.The epicardial layer of pericardium, which is responsible for the constrictive component of this process, is not typically thickened to a degree that is detectable on imaging studies. Nevertheless, careful detection of Doppler findings of constriction can be reported following pericardiocentesis for cardiac tamponade, and effusive-constrictive pericarditis can also be suspected in these cases without haemodynamic monitoring. Useful data may also be provided by CMR. The utility of CMR in constrictive pericardial disease is well established, providing the opportunity not only to evaluate pericardial thickness, cardiac morphology and function, but also for imaging intrathoracic cavity structures, allowing the differentiation of constrictive pericarditis from restrictive cardiomyopathy. Assessment of ventricular coupling with real-time cine magnetic resonance during free breathing allows an accurate evaluation of ventricular interdependence and septal bounce. [bib_ref] American Society of Echocardiography clinical recommendations for multimodality cardiovascular imaging of patients..., Klein [/bib_ref] [bib_ref] Lancellotti P; on behalf of the European Association of Cardiovascular Imaging (EACVI)..., Cosyns [/bib_ref] Since it is the visceral layer of pericardium and not the parietal layer that constricts the heart, visceral pericardiectomy must be performed. | en | apollo | train |
Alternative donors: cord blood for adults.
Allogeneic hematopoietic stem cell transplantation (HSCT) is a curative treatment for patients with hematological diseases. The probability of finding a human leukocyte antigen (HLA)- identical donor among family members is around 25% and 30% that of having a full matched unrelated donor in the registry. Patients in need may also benefit of a HLA-mismatched HSCT either from an haploidentical donors or from umbilical cord blood (UCB). Much has been learned about UCB transplant (UCBT) since the first human UCBT was performed back in 1988. Cord blood banks have been established worldwide for the collection, cryopreservation, and distribution of UCB for HSCT. Today, a global network of cord blood banks and transplant centers has been established with a large common inventory of more than 650,000 UCB units available, allowing for more than 40,000 UCBT worldwide in children and adults with severe hematological diseases. Several studies have been published on UCBT, assessing risk factors such as cell dose and HLA mismatch. Outcomes of several retrospective comparative studies showed similar results using other stem cell sources both in pediatric and adult setting. New strategies are ongoing to facilitate engraftment and reduce transplant-related mortality. In this issue, we review the current results of UCBT in adults with hematological malignancies and the clinical studies comparing UCBT with other transplant strategies. We provide guidelines for donor algorithm selection in UCBT setting. | en | apollo | train |
The SloR/Dlg metalloregulator modulates Streptococcus mutans virulence gene expression.
Metal ion availability in the human oral cavity plays a putative role in Streptococcus mutans virulence gene expression and in appropriate formation of the plaque biofilm. In this report, we present evidence that supports such a role for the DtxR-like SloR metalloregulator (called Dlg in our previous publications) in this oral pathogen. Specifically, the results of gel mobility shift assays revealed the sloABC, sloR, comDE, ropA, sod, and spaP promoters as targets of SloR binding. We confirmed differential expression of these genes in a GMS584 SloR-deficient mutant versus the UA159 wild-type progenitor by real-time semiquantitative reverse transcriptase PCR experiments. The results of additional expression studies support a role for SloR in S. mutans control of glucosyltransferases, glucan binding proteins, and genes relevant to antibiotic resistance. Phenotypic analysis of GMS584 revealed that it forms aberrant biofilms on an abiotic surface, is compromised for genetic competence, and demonstrates heightened incorporation of iron and manganese as well as resistance to oxidative stress compared to the wild type. Taken together, these findings support a role for SloR in S. mutans adherence, biofilm formation, genetic competence, metal ion homeostasis, oxidative stress tolerance, and antibiotic gene regulation, all of which contribute to S. mutans-induced disease. | en | apollo | train |
Of individuals who drown, 40 to 50 percent are four years old or younger; the only other large group is teenage males.It ranks fourth among all causes of childhood death.Drowning is the second most common cause (after motor vehicle accidents) of accidental death in children between the ages of one and fourteen years and the third most common cause of accidental death overall.However, the best protection is clothing, particularly long-sleeved shirts and wide-brimmed hats that shade the face. Snow Blindness
The surface of the eye (cornea and conjunctiva) absorbs ultraviolet radiation just like the skin does. Excessive exposure can result in sunburn of these tissues, producing snow blindness (photophthalmia). This condition is discussed in Chapter 15: Eye Disorders. **CHAPTER** **28**
**DROWNING**
Andrea R. Gravatt, M.D. Gordon G. Giesbrecht, Ph.D.
James A. Wilkerson, M.D. _Principal Contributors_
Oceans with sun-drenched beaches, streams and rivers cascading over boulders, thundering waterfalls, tree-lined swimming holes, peaceful lakes and ponds teeming with fish, sparkling swimming pools, romantic hot tubs—all of these are favorite places for relaxation not usually thought of as death scenes, but they can be. Buckets filled with water, bathtubs, and toilets are more practical facilities but also are associated with a significant drowning mortality. Drowning is a major world health problem that causes significant morbidity and mortality. The Centers for Disease Control and Prevention (CDC) reported 3582 drowning deaths in the United States during 2005, an average of ten per day. More than one in four were in children younger than fifteen years. (These numbers may be low as the result of underreporting.) That statistic does not include boating-related accidents that, according to the U.S. Coast Guard, accounted for approximately 710 additional drownings in 2005. Drowning is the second most common cause (after motor vehicle accidents) of accidental death in children between the ages of one and fourteen years and the third most common cause of accidental death overall. It ranks fourth among all causes of childhood death. Of individuals who drown, 40 to 50 percent are four years old or younger; the only other large group is teenage males.More than half these children required hospitalization.Nonfatal drownings can cause brain damage that results in long-term disability ranging from memory problems and learning disabilities to the permanent loss of all sensible brain function (permanent vegetative state). | en | apollo | train |
Amphotericin B - Amphotericin B is used when your doctor suspects or has found a serious fungal infection. This medication may result in many side effects including fever, chills, pain at the intravenous infusion site, temporary kidney failure, low red blood cell counts, and electrolyte imbalance. The side effects usually reverse when the medication is removed.
Fluconazole - Fluconazole is usually well tolerated by ICU patients. The doctor will monitor for side effects including drug interactions. Several serious drug interactions have been described with this medication. Side effects are usually minor and may include rash, itching, headache, nausea and liver abnormalities. Once the medication is removed the side effects stop.
ICU patients needing prolonged ICU care, intravenous (IV) feeding, steroids or medications that slow down the immune system (such as medications given to organ transplant patients), or who have a week immune system may have or may develop a yeast or fungal infection. An antifungal agent is a medication used to treat fungal or yeast infections.
An antifungal medication is usually given for a specific period of time however, some patients need a long period of treatment.
The doctor prescibes this medication to help a patient overcome a fungal or yeast infection.
Some antifungal medications may result in many side effects such as fever, chills, temporary kidney failure, low red blood cells and electrolyte imbalance. Other antifungal medications may have minimal side effects. | en | apollo | train |
Thus, it does seem that the disease is heterogeneous and that one treatment approach does not suit all.Oral polypodium leucotomos and α-melanocyte stimulating hormone (α-MSH) analogues have been used experimentally in small numbers but require further study [123, 124, 125].Phototesting to determine the SU action spectrum, and the immediate MUD and delayed MED (or MPD for PUVA) prior to desensitization, is essential. Treatment should be combined with antihistamines throughout the course and would usually be administered to photo-exposed sites only. Following a course of desensitization, some natural daylight exposure is required to prolong tolerance. ###### Third line
Other approaches may be required for severe recalcitrant disease, although there is no good evidence base to support these therapies, most having been used in single cases or small case series. Ciclosporin, systemic glucocorticoids and other immunosuppressants may be considered [102]. Beta-carotene [103] and hydroxychloroquine are unlikely to be effective. Intravenous immunoglobulins may be effective in some patients and ineffective in others [104, 105, 106, 107, 108, 109, 110]. For severely affected patients, particularly if the intradermal test is positive, plasmapheresis may be beneficial, although even in responders sustained remission cannot be guaranteed and this procedure is only undertaken in specialist centres and is not without risks [111, 112, 113, 114, 115, 116, 117]. More recently the anti-IgE monoclonal antibody, omalizumab has been reported to be effective in SU, although again there are also reports of lack of effect [118, 119, 120, 121, 122]. Oral polypodium leucotomos and α-melanocyte stimulating hormone (α-MSH) analogues have been used experimentally in small numbers but require further study [123, 124, 125]. Thus, it does seem that the disease is heterogeneous and that one treatment approach does not suit all.* * *
**Synonyms and inclusions**
* Hydroa aestivale
* * *
###### Introduction and general description
Hydroa vacciniforme was described by Bazin in 1862 [1].This condition usually presents in the first decade of life and is typified by the development of vesicles, crusting (which is often haemorrhagic) and subsequently varioliform scars on photo-exposed sites. | en | apollo | train |
Antioxidant Activity of Ge-132, a Synthetic Organic Germanium, on Cultured Mammalian Cells.
Ge-132 is a synthetic organic germanium that is used as a dietary supplement. The antioxidant activity of Ge-132 on cultured mammalian cells was investigated in this study. First, Ge-132 cytotoxicity on mammalian cultured cells was determined by measuring lactate dehydrogenase (LDH) levels. Ge-132 had no cytotoxic effect on three different cell lines. Second, the cell proliferative effect of Ge-132 was determined by measuring ATP content of whole cells and counting them. Ge-132 treatment of Chinese hamster ovary (CHO-K1) and SH-SY5Y cells promoted cell proliferation in a dose-dependent manner. Finally, antioxidant activity of Ge-132 against hydrogen peroxide-induced oxidative stress was determined by measuring the levels of intracellular reactive oxygen species (ROS) and carbonylated proteins. Pre-incubation of CHO-K1 and SH-SY5Y cells with Ge-132 suppressed intracellular ROS production and carbonylated protein levels induced by hydrogen peroxide. Our results suggest that Ge-132 has antioxidant activity against hydrogen peroxide-induced oxidative stress. | en | apollo | train |
Therapeutic Potential of Human Chorionic Gonadotropin Against Overactive Bladder.
Overactive bladder (OAB) is a common form of urinary incontinence, resulting from spontaneous and random contractions of the urinary bladder. The affected individuals have an uncontrollable urge to urinate and experience incontinence and nocturia, which can greatly reduce the quality of daily life. There are several drugs for the treatment, and all of them have serious side effects. The following findings suggested that human chorionic gonadotropin (hCG) has a therapeutic potential that is worth investigating for the treatment of OAB. The finding are (1) human detrusor muscle contains hCG receptors, (2) detrusor muscle becomes quiescent during pregnancy, (3) hCG can inhibit detrusor muscle contractions induced by cholinergic stimulation in rats, and (4) hCG can mimic the anticholinergic drug on detrusor muscle contractions. | en | apollo | train |
Disruption or lack of H19 methylation leads to a relaxation of IGF-II imprinting and expression of both alleles.Imprinting of the IGF-II gene is regulated by H19, which encodes an RNA transcript that is not translated into protein.Normally, only the paternally derived copy of the IGF-II gene is active and the maternal copy is inactive.These two syndromes may also result from uniparental disomy. In this case, the syndromes are not caused by deletions on chromosome 15 but by the inheritance of either two maternal chromosomes (Prader-Willi syndrome) or two paternal chromosomes (Angelman’s syndrome). Lastly, the two distinct phenotypes can also be caused by an imprinting defect that impairs the resetting of the imprint during zygote development (defect in the father leads to Prader-Willi syndrome; defect in the mother leads to Angelman’s syndrome). Imprinting and the related phenomenon of allelic exclusion may be more common than currently documented, because it is difficult to examine levels of mRNA expression from the maternal and paternal alleles in specific tissues or in individual cells. Genomic imprinting, or uniparental disomy, is involved in the pathogenesis of several other disorders and malignancies (Chap. 83e). For example, hydatidiform moles contain a normal number of diploid chromosomes, but they are all of paternal origin. The opposite situation occurs in ovarian teratomata, with 46 chromosomes of maternal origin. Expression of the imprinted gene for insulin-like growth factor II (IGF-II) is involved in the pathogenesis of the cancer-predisposing Beckwith-Wiedemann syndrome (BWS) (Chap. 101e). These children show somatic overgrowth with organomegalies and hemihypertrophy, and they have an increased risk of embryonal malignancies such as Wilms’ tumor. Normally, only the paternally derived copy of the IGF-II gene is active and the maternal copy is inactive. Imprinting of the IGF-II gene is regulated by H19, which encodes an RNA transcript that is not translated into protein. Disruption or lack of H19 methylation leads to a relaxation of IGF-II imprinting and expression of both alleles.Chapter 82 Principles of Human Genetics somatic mutations Cancer can be considered a genetic disease at the cellular level (Chap.101e).Cancers are monoclonal in origin, indicating that they have arisen from a single precursor cell with one or several mutations in genes controlling growth (proliferation or apoptosis) and/or differentiation. | en | apollo | train |
Intense pulsed light (IPL) is a technology used by cosmetic and medical practitioners to perform various skin treatments for aesthetic and therapeutic purposes, including hair removal, photorejuvenation (e.g. the treatment of skin pigmentation, sun damage, and thread veins) as well as to alleviate dermatologic diseases such as acne. IPL is increasingly used in optometry and ophthalmology as well, to treat evaporative dry eye disease due to meibomian gland dysfunction. The technology uses a high-powered, hand-held, computer-controlled flashgun to deliver an intense, visible, broad-spectrum pulse of light, generally in the visible spectral range of 400 to 1200 nm. Various cutoff filters are commonly used to selectively filter out shorter wavelengths, especially potentially damaging ultra violet light. The resulting light has a spectral range that targets specific structures and chromophores (e.g. melanin in hair, or oxyhemoglobin in blood vessels) that are heated to destruction and reabsorbed by the body. IPL shares some similarities with laser treatments, in that they both use light to heat and destroy their targets. But unlike lasers that use a single wavelength (color) of light which typically matches only one chromophore and hence only treats one condition, IPL uses a broad spectrum that when used with interchangeable filters, allowing it to be used against several conditions. This can be achieved when the IPL technician selects the appropriate filter that matches a specific chromophore. | en | apollo | train |
Chagasic cardiomyopathy is independently associated with ischemic stroke, whereas hypercoagulable states do not appear to be major contributors to the excess stroke risk seen in patients with CD. | en | apollo | train |
The wavelengths chosen for NBI were 420, 430, 530, and 600 nm as these matched the hemoglobin absorption peaks.The vessel pattern plays an important role in revealing angiogenesis in suspicious areas and may help to discriminate cancer lesions from a false-positive response arising from inflammatory tissue, as has been demonstrated in bladder5 and colon.6 Lindeboom et al. used orthogonal polarization reflectance imaging (OPS) to characterize the microcirculatory changes in tongue squamous cell carcinoma (SCC) compared to the normal contralateral side.7 Using orthogonal polarization detection, with respect to the incident light, the authors were able to achieve better visualization of the vessel pattern beneath the tissue surface. For SCC, dilated and disorganized vessels accompanied by hemorrhagic areas were observed, while the normal contralateral tissue showed no abnormal capillaries or any vessel disarrangement. In another study, Basiri et al. used polarized reflectance imaging to diagnose familial adenomatous polyposis by looking at the vasculature of the oral mucosa, with a sensitivity and specificity of 90.9% and 90.0%, respectively.8
Roblyer et al. developed a new set-up that can perform both imaging modalities, narrow band and polarization reflectance.9,10 A simplified schematic of a system that combines OPS with NBI is shown in Figure 39.4. In their study, Roblyer et al. used OPS, NBI, and fluorescence imaging. Five different types of tissue were investigated: a normal labial mucosa of a healthy volunteer, a leukoplakia at the right gingiva, a leukoplakia at the tongue with confirmed moderate dysplasia, an erythroplakia of the tongue with confirmed severe dysplasia, and a cancer of the lateral tongue. The wavelengths chosen for NBI were 420, 430, 530, and 600 nm as these matched the hemoglobin absorption peaks.Therefore, 420-nm (blue) light should probe mainly the superficial layers, while 600-nm (red) light should probe greater depths.Compared to NBI, conventional WL inspection cannot differentiate the vasculature in the more superficial layers from that in the deeper tissue layers. | en | apollo | train |
The aging spots (drusen) that often occur in macular degeneration appear on the RPE.The retinal pigment epithelium (RPE) is a single cell layer that brings nutrients and oxygen into the retina, flushing wastes into the bloodstream.If you are over sixty-five, if you have blue, green, or hazel eyes (brown eyes have more protective melanin pigment over the retina), if you have been frequently exposed to sunlight, especially without protective eyewear, if you are a smoker, or if you are a postmenopausal woman, you are more likely to develop this disease. For such a prevalent problem, there is very little that mainstream medicine can do to stop its progression towards total central blindness. How the Eye Is Damaged in Macular Degeneration
Within the eye is a layer filled with tiny blood vessels (choroidal capillaries) that nourish the retina. In people who make poor diet and lifestyle choices over the years, these capillaries become clogged with calcium deposits and cholesterol. Oxygen can't reach the retina and the cells starve and die. In other instances, the capillary lining (endothelium) may become weakened, allowing fluid and blood components to escape where they shouldn't. The result is increased pressure in the area of the retina, which can cause death of retinal cells. The role of oxidation in this process is complex. It plays a part in the blood vessel diseases that lead to clogged capillaries, arteries, and veins. Lack of antioxidants in the diet allows free radicals to run rampant, and this process carries much of the responsibility for the vessels becoming blocked in the first place. (Refer to Chapter 10, where we discuss the circulatory system in detail.) Once blood flow to the retina is reduced or cut off, the natural antioxidant defenses of the body that are carried in the blood can't counter the sunlight-caused oxidative damage going on in the retina, and deterioration is accelerated. The retinal pigment epithelium (RPE) is a single cell layer that brings nutrients and oxygen into the retina, flushing wastes into the bloodstream. The aging spots (drusen) that often occur in macular degeneration appear on the RPE.But meanwhile, the macular degeneration can continue to progress.Macular degeneration occurs in and around the retinal blood vessels that surround the macula.Calcium deposits also can build up in the membrane that lies between the choroidal capillary layer and the RPE.This blocks exchange of blood, nutrients, and wastes, threatening the health of the retina. | en | apollo | train |
Selective variations in vivo of VH3 and VH1 gene family expression in peripheral B cell IgM, IgD and IgG during HIV infection.
We have analyzed the expression of VH gene families in IgM, IgD and IgG of peripheral blood B cells from a group of HIV-infected patients. CD19+CD20+ cells were purified and anchored reverse transcriptase-polymerase chain reaction products were hybridized with VH gene family probes. IgM, IgD and IgG that expressed a VH3 gene family segment, were decreased in patients with low CD4 counts and to a greater extend in patients with AIDS symptoms (up to 85% for IgG) compared to adult healthy donors. This was correlated with elevated levels of IgM and IgG encoded by a VH1 gene family segment (around 60% for IgG). These results confirm and extend previous work that has detected the VH3 gene family under-representation in HIV infection. Here, we show that, in vivo, this phenomenon actually affects the different B cell populations of the peripheral blood: IgM+ or IgG+ B cells and also IgM+IgD+ naive B cells. In the course of HIV infection, this results in their gradual depletion. Data presented here strengthen the hypothesis that a B-cell superantigen exists in HIV infection. These pronounced variations of the normally most-expressed VH gene family may be related to B cell abnormalities detected in HIV-infected patients. | en | apollo | train |
"
"…and she could tell you what to expect so you don't get frustrated and want to quit taking your meds…"
# Recommendation 10
Nurses use appropriate techniques when providing oral care to clients.
# Level IV
# Discussion of Evidence
Assessment of the mouth prior to the provision of oral care is essential; the use of direct light (such as that provided by a flashlight) to assess the oral cavity allows for greater visualization. Numerous tooth-brushing techniques exist with no one method being clearly superior to another (Assadoorian, 2006). Brushing the teeth systematically and thoroughly, using a technique that is suitable for the individual client, is important.
Appropriate care for dentures is needed as they too accumulate plaque and harbor harmful bacteria that can cause disease (Sumi, Nakamora & Michiwaki, 2002) Appropriate technique includes behaviour management strategies for specific client populations, such as those with cognitive impairment, which will help to support the successful implementation and sustainability of optimal oral health among those with special needs (Pearson & Chalmers, 2004). For comprehensive resources related to caring for clients with delirium, depression or dementia, refer to the RNAO guidelines Screening for Delirium, Dementia and Depression in Older Adults (2003) and Caregiving Strategies for Older Adults with Delirium, Dementia and Depression (2004). | en | apollo | train |
The ultrasound probe is used to examine the liver, porta hepatis and the portal vein, the celiac axis, and the superior mesenteric artery.The percentage of patients in whom a positive laparoscopy helps avoid a nontherapeutic laparotomy varies from 10% to 30% in carcinoma of the head of the pancreas, but it may be as high as 50% in patients with tumors in the body and tail of the gland.EUS is a sensitive test for portal/superior mesenteric vein invasion, although it is somewhat less effective at detect-ing superior mesenteric artery invasion. When all of the current staging modalities are used, their accuracy in predicting resect-ability has improved.As imaging continuously improves and high-quality imag-ing is always obtained before surgery, the chance of bringing a patient to the operating room with the intent of a curative resec-tion and finding upon exploration that the patient has unresect-able disease is becoming increasingly uncommon.In an attempt to avoid such futile laparotomies, prelimi-nary laparoscopy has been advocated for patients with disease felt to be resectable by CT imaging (Fig. 33-69). Diagnostic laparoscopy with the use of US is reported to improve the accu-racy of predicting resectability to about 98%.318 The technique involves more than simple visualization with the scope and requires the placement of multiple ports and manipulation of the tissues. A general exploration of the peritoneal surfaces is carried out. The ligament of Treitz and the base of the transverse mesocolon are examined for tumor. The gastrocolic ligament is incised, and the lesser sac is examined. The ultrasound probe is used to examine the liver, porta hepatis and the portal vein, the celiac axis, and the superior mesenteric artery.The percentage of patients in whom a positive laparoscopy helps avoid a nontherapeutic laparotomy varies from 10% to 30% in carcinoma of the head of the pancreas, but it may be as high as 50% in patients with tumors in the body and tail of the gland.Also, as the quality of CT scanning has improved, the value of routine diagnostic laparoscopy has decreased.The morbidity of diagnostic laparoscopy is less than that of laparotomy, and the procedure can be performed on an outpatient basis. | en | apollo | train |
Computational discovery and experimental verification of tyrosine kinase inhibitor pazopanib for the reversal of memory and cognitive deficits in rat model neurodegeneration.
Cognition and memory impairment are hallmarks of the pathological cascade of various neurodegenerative disorders. Herein, we developed a novel computational strategy with two-dimensional virtual screening for not only affinity but also specificity. We integrated the two-dimensional virtual screening with ligand screening for 3D shape, electrostatic similarity and local binding site similarity to find existing drugs that may reduce the signs of cognitive deficits. For the first time, we found that pazopanib, a tyrosine kinase inhibitor marketed for cancer treatment, inhibits acetylcholinesterase (AchE) activities at sub-micromolar concentration. We evaluated and compared the effects of intragastrically-administered pazopanib with donepezil, a marketed AchE inhibitor, in cognitive and behavioral assays including the novel object recognition test, Y maze and Morris water maze test. Surprisingly, we found that pazopanib can restore memory loss and cognitive dysfunction to a similar extent as donepezil in a dosage of 15 mg kg<sup>-1</sup>, only one fifth of the equivalent clinical dosage for cancer treatment. Furthermore, we demonstrated that pazopanib dramatically enhances the hippocampal Ach levels and increases the expression of the synaptic marker SYP. These findings suggest that pazopanib may become a viable treatment option for memory and cognitive deficits with a good safety profile in humans. | en | apollo | train |
Background Info: Alpha-Synuclein (SNCA) is expressed predominantly in the brain, where it is concentrated in presynaptic nerve terminals (1). Alpha-synuclein is highly expressed in the mitochondria of the olfactory bulb, hippocampus, striatum and thalamus (2). Functionally, it has been shown to significantly interact with tubulin (3), and may serve as a potential microtubule-associated protein. It has also been found to be essential for normal development of the cognitive functions; inactivation may lead to impaired spatial learning and working memory (4).
SNCA fibrillar aggregates represent the major non A-beta component of Alzheimers disease amyloid plaque, and a major component of Lewy body inclusions, and Parkinson's disease. Parkinson's disease (PD) is a common neurodegenerative disorder characterized by the progressive accumulation in selected neurons of protein inclusions containing alpha-synuclein and ubiquitin (5, 6).
There are currently two types of fibrils available: Type 1 and Type 2. All Type 1 fibrils (SPR-322, SPR-324 and SPR-326) have been generated in the presence of endotoxin whereas in Type 2 fibrils (SPR-317), LPS has been removed (low endotoxin) prior to fibrillization. The length of Type 2 fibrils (SPR-317) is longer than Type 1 fibrils (SPR-322).
Concentration: Lot/batch specific. See included datasheet.
Certificate of Analysis: Certified >95% pure using SDS-PAGE analysis.
References: 1. Genetics Home Reference: SNCA. US National Library of Medicine. (2013).
2. Zhang L., et al. (2008) Brain Res. 1244: 40-52.
3. Alim M.A., et al. (2002) J Biol Chem. 277(3): 2112-2117.
4. Kokhan V.S., Afanasyeva M.A., Van'kin G. (2012) Behav. Brain. Res. 231(1): 226-230.
5. Spillantini M.G., et al. (1997) Nature. 388(6645): 839-840.
6. Mezey E., et al. (1998) Nat Med. 4(7): 755-757.
Biological Activity: Endogenous alpha-synuclein phosphorylation. 100 µM alpha synuclein protein monomer (SPR-321) seeded with 10 nM alpha synuclein protein PFF (SPR-322) in 25 µM Thioflavin T (PBS pH 7.4, 100 µl reaction volume) generated a fluorescence intensity of 13,000 Relative Fluorescence Units after incubation at 37°C with shaking at 600 rpm. Fluorescence was measured by excitation at 450 nm and emission at 485 nm on a Molecular Devices Gemini XPS microplate reader.
Certificate of Analysis: Certified 92% pure using SDS-PAGE analysis.
Biological Activity: Does not induce Lewy body inclusion formation in Sprague-Dawley rat primary hippocampal neurons. Thioflavin T emission curve shows only a small increase in fluorescence (indicative of alpha synuclein aggregation) when Type 2 alpha synuclein PFFs (SPR-317) are combined with alpha synuclein monomers (SPR-321 or SPR-316). Certain biological activities in other neuronal cells cannot be ruled out. Researchers should test compatibility prior to use.
There are currently two types of fibrils available: Type 1 and Type 2. All Type 1 fibrils (SPR-322, SPR-324 and SPR-326) have been generated in the presence of endotoxin whereas in Type 2 fibrils (SPR-317) LPS has been removed (low endotoxin) prior to fibrillization. The length of Type 2 fibrils (SPR-317) is longer than Type 1 fibrils (SPR-322). | en | apollo | train |
The involvement of Nrf2 in the protective effects of (-)-Epigallocatechin-3-gallate (EGCG) on NaAsO2-induced hepatotoxicity.
Arsenic exposure produces hepatotoxicity. The common mechanism determining its toxicity is the generation of oxidative stress. Oxidative stress induced by arsenic leads to the activation of nuclear factor erythroid 2-related factor 2 (Nrf2) pathway. (-)-Epigallocatechin-3-gallate (EGCG) possesses a potent antioxidant capacity and exhibits extensive pharmacological activities. This study aims to evaluate effects of EGCG on arsenic-induced hepatotoxicity and activation of Nrf2 pathway. Plasma activities of alanine aminotransferase, aspartate aminotransferase, alkaline phosphatase, and lactate dehydrogenase were measured; Histological analyses were conducted to observe morphological changes; Biochemical indexes such as oxidative stress (Catalase (CAT), malonyldialdehyde (MDA), superoxide dismutase (SOD), glutathione (GSH), reactive oxygen species (ROS)), Nrf2 signaling related genes (Nrf2, Nqo1, and Ho-1) were assessed. The results showed that EGCG inhibited arsenic-induced hepatic pathological damage, liver ROS level and MDA level. Arsenic decreases the antioxidant enzymes SOD, GPX, and CAT activity and the decrease was inhibited by treatment of EGCG. Furthermore, EGCG attenuated the retention of arsenic in liver tissues and improved the expressions of Nrf2 signaling related genes (Nrf2, Nqo1, and Ho-1). These findings provide evidences that EGCG may be useful for reducing hepatotoxicity associated with oxidative stress by the activation of Nrf2 signaling pathway. Our findings suggest a possible mechanism of antioxidant EGCG in preventing hepatotoxicity, which implicate that EGCG may be a potential treatment for arsenicosis therapy. | en | apollo | train |
The relationship between postoperative results and bone dynamics in RA patients who underwent cementless Ortholoc II TKA: histomorphometric study.
Abstract We previously reported a histomorphometric study of iliac bone obtained at the time of cementless total knee arthroplasty (TKA) in patients with rheumatoid arthritis (RA). In this paper, we further extended our analysis to investigate the postoperative results and radiographs after TKA in association with bone metabolism. All the patients were female, ranging in age from 38 to 68 years (mean, 56.8 years). Histomorphometric results demonstrated that bone volume and trabecular thickness were decreased, whereas bone absorption and bone formation rate (BFR) were increased. The bone in patients with mutilating disease (MUD) showed remarkably increased bone turnover and osteoporosis compared with those of the more erosive subset (MES) patients. Sixteen out of the 20 patients were alive at the time of follow-up (follow-up period between 5 years 10 months and 8 years 11 months). Among them, 10 patients could be further examined. Radiolucent lines (RLL) were assessed by the modified Knee Society evaluation (scoring) system. The number of RLL (N-RLL) were correlated with BFR in morphometric examination. In addition, the weight-bearing zones in the N-RLL were more significantly correlated with BFR. The Japanese Orthopedic Association (JOA) score and pain score negatively correlated with eroded bone surface. The present study indicated that bone dynamics, rather than the bone volume at the time of TKA, were involved in the presence of RLL and in pain after surgery for TKA. | en | apollo | train |
The effect of hypertrophic adenoids and tonsils on the development of posterior crossbite and oral habits.
There are a number of studies in the literature, that associate nasopharyngeal airway obstruction, as a result of adenoid enlargement, to the development of skeletal and dental abnormalities. However, the etiologic role of hypertrophied adenoids and tonsils in developing an aberrant dentofacial growth is not clear, yet. The present investigation attempted to study the incidence of maxillary posterior crossbite and oral habits, in a sample of 120 children, that displayed hypertrophied adenoids with or without enlarged tonsils, and underwent adenoidectomy. An attempt was also made to relate the presence of crossbite to the severity of upper respiratory airway obstruction. The severity of airway obstruction was assessed using radiographic and surgical criteria. A lateral cephalometric radiograph was obtained and studied for each patient. Results indicated, that 47% of the children examined, had developed a posterior crossbite. The presence of crossbite was high in children with severe airway obstruction, particularly in those with hypertrophied adenoids and tonsils. On the contrary, most of the children with a posterior crossbite did not have a history of pacifier or finger sucking. It was also concluded, that the study of a lateral cephalometric radiograph can be a valuable diagnostic method in the evaluation of children with upper airway obstruction. | en | apollo | train |
Hemostatic effects of recombinant DisBa-01, a disintegrin from Bothrops alternatus.
A monomeric RGD-disintegrin was recently identified from a cDNA library from the venom gland of Bothrops alternatus. The corresponding 12 kDa-recombinant protein, DisBa-01, specifically interacted with alpha(v)beta3 integrin and displayed potent anti-metastatic and anti-angiogenic properties. Here, the interaction of DisBa-01 with platelet alphaIIb beta3 integrin and its effects on hemostasis and thrombosis were investigated. DisBa-01 bound to Chinese Hamster Ovary (CHO) cells expressing beta3 or alphaIIb beta3 and promoted their adhesion and the adhesion of resting platelets onto glass coverslips. The disintegrin inhibited the binding of FITC-fibrinogen and FITC-PAC-1 to ADP-stimulated platelets and inhibited ADP-, TRAP- and collagen-induced aggregation of murine, rabbit or human platelets. In a flow chamber assay, DisBa-01 inhibited and reverted platelet adhesion to immobilized fibrinogen. DisBa-01 inhibited the phosphorylation of FAK following platelet activation. The intravenous injection of DisBa-01 in C57Bl6/j mice, prolonged tail bleeding time as well as thrombotic occlusion time in mesenteric venules and arterioles following vessel injury with FeCl3. In conclusion, DisBa-01 antagonizes the platelet alphaIIb beta3 integrin and potently inhibits thrombosis. | en | apollo | train |
Interaction of tetrahydroaminoacridine with acetylcholinesterase and butyrylcholinesterase.
This paper examines inhibition of acetylcholinesterase (AchE) and butyrylcholinesterase (BuchE) by tetrahydroaminoacridine (THA), an acridine analog under consideration for palliative treatment of Alzheimer's dementia. THA causes linear mixed inhibition of AchE hydrolysis of acetylthiocholine, a cationic substrate (KI = 3.8 x 10(-9) M), and linear competitive inhibition of AchE hydrolysis of 7-acetoxy-4-methylcoumarin, an uncharged substrate (KI = 6.8 x 10(-9) M), and N-methyl-7-dimethylcarbamoxyquinolinium, a cationic carbamate (KI = 1.5 x 10(-8) M). Propidium association with AchE in the presence of saturating concentrations of THA is characterized by a dissociation constant of 7.7 +/- 0.7 x 10(-6) M, a value within 2-fold of the dissociation constant in the absence of THA. Association of THA with AchE is, therefore, not mutually exclusive with association of propidium at the peripheral anionic site. Moreover, THA causes dissociation of decidium complexes with AchE at concentrations compatible with a dissociation constant of 7.0 +/- 0.4 x 10(-9) M. Similar relationships were observed for THA inhibition of BuchE hydrolysis of butyrylthiocholine (KI = 2.5 x 10(-8) M) and dissociation of decidium complexes with BuchE (KD = 1.9 +/- 0.1 x 10(-8) M). These kinetic and equilibrium data uniformly indicate that THA associates with AchE and BuchE with high affinity and that the subsequent inhibition comes about through ligand association at the active center rather than at a peripheral site. The noncompetitive component of inhibition reflects association of THA with the acyl-enzyme intermediate, with subsequent effects on the rate of deacylation. | en | apollo | train |
A neural circuit mechanism for mechanosensory feedback control of ingestion.
Mechanosensory feedback from the digestive tract to the brain is critical for limiting excessive food and water intake, but the underlying gut-brain communication pathways and mechanisms remain poorly understood<sup>1-12</sup>. Here we show that, in mice, neurons in the parabrachial nucleus that express the prodynorphin gene (hereafter, PB<sup>Pdyn</sup> neurons) monitor the intake of both fluids and solids, using mechanosensory signals that arise from the upper digestive tract. Most individual PB<sup>Pdyn</sup> neurons are activated by ingestion as well as the stimulation of the mouth and stomach, which indicates the representation of integrated sensory signals across distinct parts of the digestive tract. PB<sup>Pdyn</sup> neurons are anatomically connected to the digestive periphery via cranial and spinal pathways; we show that, among these pathways, the vagus nerve conveys stomach-distension signals to PB<sup>Pdyn</sup> neurons. Upon receipt of these signals, these neurons produce aversive and sustained appetite-suppressing signals, which discourages the initiation of feeding and drinking (fully recapitulating the symptoms of gastric distension) in part via signalling to the paraventricular hypothalamus. By contrast, inhibiting the same population of PB<sup>Pdyn</sup> neurons induces overconsumption only if a drive for ingestion exists, which confirms that these neurons mediate negative feedback signalling. Our findings reveal a neural mechanism that underlies the mechanosensory monitoring of ingestion and negative feedback control of intake behaviours upon distension of the digestive tract. | en | apollo | train |
Prognostic Value of Prealbumin in Liver Cancer: A Systematic Review and Meta-Analysis.
Accumulated studies have reported the prognostic significance of prealbumin in liver cancer, but the results were not conclusive. The aim of this study was to evaluate the association between pretreatment serum prealbumin and clinical outcome of liver cancer patients through a meta-analysis. We comprehensively searched EMBASE, PubMed, Web of Science and the Cochrane library to identify eligible studies. The pooled hazard ratios (HRs) and their 95% confidence intervals (CIs) were utilized to evaluate the prognostic value of pretreatment serum prealbumin in overall survival (OS) and recurrence-free survival (RFS) of liver cancer patients. A total of 3470 patients from 10 eligible studies were finally included for analysis. The combined effects of prealbumin on liver cancer patients' OS and RFS were HR = 1.83, 95% CI: 1.46-2.30, <i>P</i> < 0.001 and HR = 1.47, 95% CI: 1.01-2.14, <i>P</i> = 0.045, respectively. Sensitivity and subgroup analysis showed that the pooled HR of prealbumin on liver cancer patients' OS was stable. Since potential publication bias was identified in the OS studies, the trim-and-fill method therefore was performed to explore publication bias, and the results showed reliability. This meta-analysis shows that low pretreatment serum prealbumin is significantly associated with poor prognosis of liver cancer patients. | en | apollo | train |
The eponymous manoeuvre is not, however, an obscure physiological rite but a natural event performed daily by most of us.## 14.2 Valsalva manoeuvre
Valsalva was an eighteenth-century Italian physiolgist.Combined with a sympathetically-mediated rise in contractility this limits the fall in cardiac output to approximately 20%. Sympathetically-mediated _vasoconstriction_ in the skeletal muscle, splanchnic and renal vascular beds raises the peripheral resistance by 30—40% which not only restores mean arterial pressure but even increases it to 10—14 mmHg above the supine value (see Figure 14.1). Splanchnic _venoconstriction_ partially compensates for the dependent venous pooling but there is no sustained reflex venoconstriction in muscle or skin during orthostasis. The above responses normally take less than a minute to complete. The effect of orthostasis on capillary filtration, leading to a 6—12% fall in plasma volume over about 40 min, was described in Section 9.9. Renal _salt and water excretion_ is cut down by reflexly-induced increases in plasma vasopressin, renin, angiotensin and aldosterone, acting in combination with the reflex renal vasoconstriction. The net result of this complex, integrated response is that arterial pressure and therefore cerebral perfusion pressure is safeguarded. It seems perverse that, despite all this physiological 'effort', the cerebral blood flow actually declines by 10—20% during orthostasis. The decline is caused by a rise in cerebral vascular resistance, which may be due partly to the increased ventilation that accompanies orthostasis and lowers the arterial _P_ co2, partly due to a sympathetically-induced constriction of cerebral vessels and partly to the collapse of the extracranial veins that drain cerebral blood. ## 14.2 Valsalva manoeuvre
Valsalva was an eighteenth-century Italian physiolgist. The eponymous manoeuvre is not, however, an obscure physiological rite but a natural event performed daily by most of us.The manoeuvre creates a high intrathoracic pressure which evokes a complex circulatory response with four phases (see Figure 14.2).Initially arterial pressure rises because the high intrathoracic pressure presses upon the thoracic aorta ( _phase 1_ ). | en | apollo | train |
Precise Characterization of KRAS4B Proteoforms by Combining Immunoprecipitation with Top-Down Mass Spectrometry.
The characterization of biologically relevant post-translational modifications (PTMs) on KRAS4B has historically been carried out through methodologies such as immunoblotting with PTM-specific antibodies or peptide-based proteomic methods. While these methods have the potential to identify a given PTM on KRAS4B, they are incapable of characterizing or distinguishing the different molecular forms or proteoforms of KRAS4B from those of related RAS isoforms. We present a method that combines immunoprecipitation of KRAS4B with top-down mass spectrometry (IP-TDMS), thus enabling the precise characterization of intact KRAS4B proteoforms. We provide detailed protocols for the IP, LC-MS/MS, and data analysis comprising a successful IP-TDMS assay in the contexts of cancer cell lines and tissue samples. | en | apollo | train |
Postoperative Instructions | Columbia, MD | APEX ORAL MAXILLOFACIAL SURGERY CENTER Micahel I.
No rinsing, spitting, or sucking through a straw the day of surgery.
No driving for 24 hours and No alcohol for 48 hours following surgery IF you had General Anesthesia.
Sit up as much as possible, Keeping your head elevated helps to reduce swelling (a lazy-boy type recliner is perfect).
**** If you had General Anesthesia, it is common to be nauseated for the first day and you may vomit as well. If this happens drink clear liquids and discontinue pain meds and antibiotic until nausea is gone. If you have persistent vomiting, please call our office for further instructions.
****A little bleeding or oozing is normal. Persistent bleeding can be helped with soaking a tea bag in warm water then placing the tea bag in the extraction area and applying gentle pressure for 30 minutes. DO NOT RINSE AFTER BLEEDING HAS STOPPED.
Begin warm salt water rinses after meals. DO NOT use ice anymore. Begin using a warm heat compress such as a heating pad as often and continuous as possible. Continue these steps for 3-5 days, or longer as needed. You may also now brush your teeth again.
Medicine for pain should be taken when you get home. In ADDITION to vicodin you may take 600mg of Motrin or Advil (3 pills) every 6 hours. (generic version is ibuprofen) IF you are taking vicodin, you may not take Tylenol. The other benefit of the Motrin/Advil is that it can help with reducing swelling.
If an antibiotic has been prescribed, take the first dose 30 minutes after the pain medication. Then proceed to follow until medication is gone.
For patients who were prescribed this oral rinse start 24 hours after surgery. Rinse once in the morning and once at night until directed to stop.
For the first few days following surgery you need to eat soft foods and gradually progress to regular food.
AVOID DAIRY PRODUCTS for the first 24 hours if you had General Anesthesia as the milk can upset the stomach!
If you have additional questions, please call our office. | en | apollo | train |
The main symptom of fibrosis is progressive breathlessness.Less than 20 percent of patients diagnosed with IPF will be alive after five years.This is a serious progressive disease and carries a poor prognosis.Information box 3.3e-III
Chronic obstructive pulmonary disease: comments from a Chinese medicine perspective
In Chinese medicine, the symptoms of COPD would correspond to Accumulation of Phlegm, with Phlegm Heat or Damp Phlegm Obstructing the Lungs. The destruction of the lung tissue that occurs in emphysema represents a background of Deficiency of Lung Qi and Yin. As the condition progresses and leads to respiratory and cardiac failure, an end-stage patient might be diagnosed as Deficient in both Yin and Yang. Severe Deficiency of Heart, Spleen and Kidneys is also likely to feature in the diagnostic picture. Fibrosis of the lung and occupational lung disease
Fibrosis is the medical term used to describe scarring. In lung fibrosis the scarring affects the alveoli and the smallest bronchioles, and leads to narrowing of the airways and loss of elasticity of the lungs. This can severely impair the action of breathing. Fibrosis is often the end result of a long-standing process of inflammation, which can result from irritation caused by inhaled substances in the form of tiny particles. Many of these substances are found within industrial settings. For example, coal dust, silica from stone and asbestos can lead to impairment in the function of the lungs in people who have jobs such as mining, stonemasonry and ship-building. Allergy to a mold that grows on stored hay can produce a similar sort of scarring reaction in farm workers, in a condition known as farmer's lung. Rarely, the fibrosis can be a result of certain prescribed drugs, and can occasionally develop with no obvious cause (when it is known as idiopathic pulmonary fibrosis (IPF) or usual interstitial pneumonia (UIP)). This is a serious progressive disease and carries a poor prognosis. Less than 20 percent of patients diagnosed with IPF will be alive after five years. The main symptom of fibrosis is progressive breathlessness.In severe cases the patient will have the blue discoloration of the lips and tongue known as cyanosis.In these severe cases the heart is put under strain because it has to pump blood through scarred lung tissue, and this can lead to heart failure with edema.Asbestos is a particularly harmful dust because, in addition to causing inflammation and scarring, it is highly carcinogenic. | en | apollo | train |
The surface of the tonsils riddled with cavities called lacunae. They have wide ramifications in the body lymphoid tissue. Lacunar angina or lacunar tonsillitis is an acute inflammatory process that develops in the gaps.
This disease often happens in children and adolescents, at the same time in adults it usually develops as an exacerbation of a smoldering infection. After 50 years the possibility of developing lacunar angina is reduced. This disease is diagnosed year-round, but the maximum number of cases falls on the interval from October to January. The symptoms and treatment of lacunar tonsillitis in adults and children may have some differences.
Causes of lacunar angina chronic nature is constant irritation of mucous membranes of tobacco smoke, frequent alcohol consumption, and mouth breathing (this phenomenon develops, for example, when sinusitis). In children, the disease becomes chronic with ineffective treatment of acute process.
The pathogenesis of this disease is characterized by rapid development. The full disease symptoms manifest during the day. The temperature can rise to febrile values, that is to 38-39 degrees, or until piratescove level (39-41 degrees). Lacunar tonsillitis without fever very rare.
In this disease like lacunar tonsillitis, the symptoms may be nonspecific, including weakness, headaches, insomnia, lack of appetite, fatigue. Possible pain not only in the throat when swallowing, but also in the jaw joints and muscles.
In spite of the pronounced pallor of nasolabial triangle marked redness of the cheeks. Possible lymphadenitis, is an inflammation of the lymph nodes in the jaw area and neck, and tachycardia (heart rate exceeding normal).
To identify the disease, the otolaryngologist examines the oral cavity. Lacunar tonsillitis is diagnosed when an pharyngoscope, the doctor noted inflammation of the tonsils, purulent plaque, hyperthermia soft NBA, the accumulation of pus in the gaps.
Bacteriological studies reveal the presence of different microorganisms. This is usually Staphylococcus aureus, hemolytic Staphylococcus aureus and beta hemolytic Streptococcus group A. as for viruses, when lacunar angina most often detected adenoviruses, cytomegalovirus and the herpes virus.
If follicular tonsillitis, on the surface of the tonsils are whitish-yellow plaque or festering bubbles. At the opening of the follicle in economincally fiber is the risk of peritonsillar abscess.
Lacunar tonsillitis is characterized by a light yellow tinge in the mouths of the gaps. It consists of leukocytes and tore particles of epithelium. Often the drain is formed patina which covers the tonsils, but beyond their surface does not come out. It can be easily removed, the open surface as a result of this remains.
These differences between lacunar and follicular tonsillitis is characterized by very similar symptoms. The duration in most cases is the same. On average, follicular tonsillitis lasts as long as lacunar and from 5 to 7 days.
The need for hospitalization is determined on the basis of data on the severity of the pathogenesis. In the treatment at home you need to stay in bed, limit contact, drink plenty of fluids and eat warm mashed food. In the absence of effect of conservative treatment and difficulty breathing may require surgical removal of the tonsils.
In this disease like lacunar angina, need to not only treat the symptoms, but also to pay attention to appropriate nutrition. From the diet of a sick person should exclude fresh milk. Otherwise, lactic bacteria, lingering on the mucous membrane, contribute to the proliferation of pathogenic organisms. In extreme cases, after drinking the milk takes a few times to rinse the throat. Drink is best consumed warm mineral water containing no gas, weakly brewed tea, perhaps with honey.
the balance between the efficacy and safety of drugs.
ENT-infections medication first choice of antibiotics are-penicillins. Also often prescribed cephalosporins, macrolides, fluoroquinolones.
At high temperature it is necessary to treat lacunar angina, using antipyretics such as paracetamol or Nurofen. Of antihistamines that reduce the swelling of the tonsils, usually assigned or tsetrin suprastin.
Local treatment consists in the use of gargles, throat lubrication Lugol solution, the use of inhalers and tablets for sucking. When the temperature returns to normal, you can use vodka compresses in the neck.
In this disease like lacunar tonsillitis, a specialist must evaluate the symptoms and prescribe an appropriate treatment. Taking any medications without consulting with a specialist is unacceptable.
To cure the disease is possible by aspiration of pus. This is done by using the apparatus of Tonsillar.
If no effect, may be assigned Economia. The resection of the surrounding tonsil tissue is abdominal method, or a laser. As a result of purulent content out, and tissue when healing, do not allow pus to accumulate in the gaps again.
Tonsillectomy surgery involving the removal of tonsils. This is an extreme measure, which is going to help the patient when other methods fail.
Traditional medicines with proper use bring the time of recovery. To reduce swelling of the tonsils and to remove throat mucous plaque will help decoctions of calendula, sage and chamomile. They have a slight antiseptic and soothing effect.
Since when lacunar tonsillitis need plenty of warm drink, it is possible for this purpose to use the flowers of the Linden or yarrow. The therapeutic effect will increase if in the drink, add 2-3 teaspoons of honey. You can replace it with raspberry jam, it will facilitate the disease and strengthen the immune system.
Lemon in drinks when lacunar angina better not to add. The fact that it contains acid, that is, it may cause irritation. This creates an environment conducive to bacteria.
For lubrication of the tonsils is a mixture of aloe, Kalanchoe and honey. A bandage dipped in this mixture, is wound on a teaspoon, and then she carefully smeared the gaps.
If treatment is delayed or inadequate, lacunar tonsillitis in children can cause abdominal pain, nausea, pain during swallowing radiating to the ear, upset stomach, asphyxiation, convulsions, conjunctivitis. To keep the condition may be about three days.
Lacunar tonsillitis for children is dangerous because it can provoke the occurrence of false croup. The cause of the phenomenon becomes swelling of the tonsils, where the Airways overlap. The child gasps, his skin turning blue.
Incorrect treatment with antibiotics lacunar tonsillitis in children can lead to disability or death. Any medication is prescribed based on the age and weight of the child.
involvement of the mediastinum in the inflammatory process.
Among the possible late complications myocarditis, pericarditis, pancardi, acute rheumatic fever, pyelonephritis, hemorrhagic vasculitis. You can prevent them with timely treatment for medical help.
the use of medical masks in case someone in the family was sick.
Avoid frozen and chilled food. It is also desirable to observe sufficient physical activity, for example, to accustom themselves to the daily morning jog. | en | apollo | train |
Evaluation of compliance and stiffness of decellularized tissues as scaffolds for tissue-engineered small caliber vascular grafts using intravascular ultrasound.
This study evaluated the compliance and stiffness of decellularized canine common carotid artery as well as decellularized canine ureter and compared it with that of polytetrafluoroethylene, elastin gel combined with polylactic acid tube, and canine common carotid artery. To calculate the compliance and stiffness, internal diameters and cross-sectional areas were measured according to changes in the intraluminal pressures using intravascular ultrasound in a closed circuit system equipped with a syringe pump. The pressure-area curve, stiffness parameter beta, and diameter compliance were evaluated. Canine common carotid artery and decellularized canine common carotid artery, as well as decellularized canine ureter, showed a compliant response, a J-shaped curve. However, the latter evidenced different characteristics in the low pressure range. Although the cross-sectional area of the elastin gel combined with polylactic acid tube showed some changes, it did not present a J-shape curve. Polytetrafluoroethylene exhibited a noncompliant response.The results in this study have shown that the compliance in the decellularized matrices was maintained after cell extraction, which demonstrated the importance of the remaining matrix structure in the mechanical properties of decellularized tissue. A clear difference between the decellularized matrices and synthetic materials was noted in terms of the compliance, even in materials composed of relatively elastic materials. | en | apollo | train |
Noninfectious gastrointestinal (GI) complications of mycophenolic acid therapy: a consequence of local GI toxicity?
Mycophenolic acid (MPA), a reversible inhibitor of inosine 5''-monophosphate dehydrogenase (IMPDH), selectively inhibits T- and B-cell proliferation. MPA exposure correlates inversely with the risk of acute rejection. Mycophenolate mofetil (CellCept; MMF) is an immediate-release formulation of MPA that is absorbed in the stomach and small intestine. Enteric-coated mycophenolate sodium (myfortic; EC-MPS) delays MPA release until the small intestine. There are some indications that EC-MPS may be associated with improved gastrointestinal (GI) toxicity. It is widely believed that systemic MPA exposure determines the extent of GI toxicity. However, intestinal cells absorb purines locally from the gut lumen via passive diffusion and a specific transport mechanism. It seems likely that local, rather than systemic, MPA exposure is responsible for GI events. Acyl-MPAG, a toxic metabolite of MPA, may be produced by GI cells contributing to MPA-related gut toxicity, suggesting that measures to alter the rate or location of MPA absorption could be beneficial. Lastly, the release of N-(2-hydroxyethyl)morpholine following deestification of MMF may have local irritative effects on gastric mucosal cells. Research which more closely focuses on the local gut pathobiology of MPA-containing drugs may provide a much clearer understanding of the dose-limiting toxicity of this drug class. | en | apollo | train |
Where might you go from here, if you wanted to advance your career?That's when I joined the Commissioned Corps.They sent me here for 8 months, and then a permanent job opened up and I was asked to stay.I had always wanted to work on an Indian reservation, so I asked if I could do that.On some days I'm primarily doing refills; on others, I'm doing all the new prescriptions or checking prescriptions our technicians have filled. If the dose seems too high or too low, it doesn't seem like the right drug, or it seems like a drug is missing from what's been prescribed, I call up the doctor or nurse and ask. Usually with new prescriptions, I tell the patient a little bit about the medicine. A lot of times they have something they're uncomfortable asking the doctor, so they ask me. I'm also helping implement an automated refill line, and I've created a pamphlet and posters to help the patients use it. Hopefully, I'll be training soon to participate in our pharmacist-run anticoagulation clinic. Our health center is also looking at having pharmacists perform medication reconciliation, do patient counseling, and look at other laboratory results, too. Together with the doctor we would make adjustments to the patients' drug therapy. What education or training do you have? Is it typical for your job? I have a PharmD degree. I originally went to school to be a physical therapist, so I also have a BS in exercise physiology. What path did you take to get to the job you are in today? In the summer during college, I worked at a drugstore, and I'd often hand patients their medications. I found out that I liked talking to people. I only needed one more class to qualify for pharmacy school, and I decided to do it. After pharmacy school, I worked for a while as a traveling pharmacist, and I was sent to different areas on short-term assignments. I had always wanted to work on an Indian reservation, so I asked if I could do that. They sent me here for 8 months, and then a permanent job opened up and I was asked to stay. That's when I joined the Commissioned Corps. Where might you go from here, if you wanted to advance your career?In the public health service I can get out from behind the counter at the pharmacy, become a deputy director or compliance officer, do epidemiology, serve as chair of a public health organization committee, help with disaster response, work in drug approval at the FDA—there are so many options!What is the worst or most challenging part of your job? | en | apollo | train |
Acyl-CoA thioesterase 13 is a protein that in humans is encoded by the ACOT13 gene. This gene encodes a member of the thioesterase superfamily. In humans, the protein co-localizes with microtubules and is essential for sustained cell proliferation.
Structure
The orthologous mouse protein forms a homotetramer and is associated with mitochondria. The mouse protein functions as a medium- and long-chain acyl-CoA thioesterase. Multiple transcript variants encoding different isoforms have been found for this gene.
Function
The protein encoded by the ACOT13 gene is part of a family of Acyl-CoA thioesterases, which catalyze the hydrolysis of various Coenzyme A esters of various molecules to the free acid plus CoA. These enzymes have also been referred to in the literature as acyl-CoA hydrolases, acyl-CoA thioester hydrolases, and palmitoyl-CoA hydrolases. The reaction carried out by these enzymes is as follows:
CoA ester + H2O → free acid + coenzyme A
These enzymes use the same substrates as long-chain acyl-CoA synthetases, but have a unique purpose in that they generate the free acid and CoA, as opposed to long-chain acyl-CoA synthetases, which ligate fatty acids to CoA, to produce the CoA ester. The role of the ACOT- family of enzymes is not well understood; however, it has been suggested that they play a crucial role in regulating the intracellular levels of CoA esters, Coenzyme A, and free fatty acids. Recent studies have shown that Acyl-CoA esters have many more functions than simply an energy source. These functions include allosteric regulation of enzymes such as acetyl-CoA carboxylase, hexokinase IV, and the citrate condensing enzyme. Long-chain acyl-CoAs also regulate opening of ATP-sensitive potassium channels and activation of Calcium ATPases, thereby regulating insulin secretion. A number of other cellular events are also mediated via acyl-CoAs, for example signal transduction through protein kinase C, inhibition of retinoic acid-induced apoptosis, and involvement in budding and fusion of the endomembrane system. Acyl-CoAs also mediate protein targeting to various membranes and regulation of G Protein α subunits, because they are substrates for protein acylation. In the mitochondria, acyl-CoA esters are involved in the acylation of mitochondrial NAD+ dependent dehydrogenases; because these enzymes are responsible for amino acid catabolism, this acylation renders the whole process inactive. This mechanism may provide metabolic crosstalk and act to regulate the NADH/NAD+ ratio in order to maintain optimal mitochondrial beta oxidation of fatty acids. The role of CoA esters in lipid metabolism and numerous other intracellular processes are well defined, and thus it is hypothesized that ACOT- enzymes play a role in modulating the processes these metabolites are involved in.
References
External links
Further reading
Genes on human chromosome 6
Proteins | en | apollo | train |
aureus_ carriers in the anterior nares are also at greater risk of developing a carbuncle than non-carriers.Patients who are _S.Severe PVL infections may require parenteral antibiotic combinations including vancomycin, teicoplanin, daptomycin, linezolid and tigecycline. Once the PVL infection has been treated then decolonization of the index case plus any affected/high risk close contacts should be undertaken simultaneously. Nasal mupirocin (matchstick head-sized amount) on the end of a cotton bud should be applied to the inner surface of each nostril TDS for 5 days plus chlorhexidine 4% or Triclosan 1% wash (applied to wet skin, used as a soap and left on for 1 min) daily for 5 days [14]. * * *
### Treatment ladder
#### Simple furunculosis: first line
* Flucloxacillin
* Erythromycin
#### PVL _S. aureus_ furunculosis: first line
* Clindamycin + rifampicin plus decolonization
* Linezolid + rifampicin plus decolonization
#### NB
* Any large painful necrotic fluctuant abscess may require incision and drainage under local anaesthetic in addition to the above antibiotics. * * *
### Carbuncle
###### Definition
A carbuncle is a deep infection of a group of contiguous follicles with _S. aureus_ , accompanied by intense inflammatory changes in the surrounding and underlying connective tissues, including the subcutaneous fat. ###### Introduction and general description
Carbuncles tend to be larger than abscesses/boils as they represent a cluster of coalescing boils connected under the skin surface. ###### Epidemiology
###### Incidence and prevalence
Carbuncles usually occur in otherwise healthy individuals but are more common in the presence of diabetes, malnutrition, cardiac failure, drug addiction or severe generalized dermatoses, obesity and during prolonged steroid therapy. Patients who are _S. aureus_ carriers in the anterior nares are also at greater risk of developing a carbuncle than non-carriers.###### Age
Carbuncles occur predominantly in middle or old age.###### Sex
Males are more commonly affected than females.###### Pathophysiology
###### Causative organisms
* _Staphylococcus aureus_. | en | apollo | train |
Mitochondrial dysfunction in Pten haplo-insufficient mice with social deficits and repetitive behavior: interplay between Pten and p53.
Etiology of aberrant social behavior consistently points to a strong polygenetic component involved in fundamental developmental pathways, with the potential of being enhanced by defects in bioenergetics. To this end, the occurrence of social deficits and mitochondrial outcomes were evaluated in conditional Pten (Phosphatase and tensin homolog) haplo-insufficient mice, in which only one allele was selectively knocked-out in neural tissues. Pten mutations have been linked to Alzheimer's disease and syndromic autism spectrum disorders, among others. By 4-6 weeks of age, Pten insufficiency resulted in the increase of several mitochondrial Complex activities (II-III, IV and V) not accompanied by increases in mitochondrial mass, consistent with an activation of the PI3K/Akt pathway, of which Pten is a negative modulator. At 8-13 weeks of age, Pten haplo-insufficient mice did not show significant behavioral abnormalities or changes in mitochondrial outcomes, but by 20-29 weeks, they displayed aberrant social behavior (social avoidance, failure to recognize familiar mouse, and repetitive self-grooming), macrocephaly, increased oxidative stress, decreased cytochrome c oxidase (CCO) activity (50%) and increased mtDNA deletions in cerebellum and hippocampus. Mitochondrial dysfunction was the result of a downregulation of p53-signaling pathway evaluated by lower protein expression of p21 (65% of controls) and the CCO chaperone SCO2 (47% of controls), two p53-downstream targets. This mechanism was confirmed in Pten-deficient striatal neurons and, HCT 116 cells with different p53 gene dosage. These results suggest a unique pathogenic mechanism of the Pten-p53 axis in mice with aberrant social behavior: loss of Pten (via p53) impairs mitochondrial function elicited by an early defective assembly of CCO and later enhanced by the accumulation of mtDNA deletions. Consistent with our results, (i) SCO2 deficiency and/or CCO activity defects have been reported in patients with learning disabilities including autism and (ii) mutated proteins in ASD have been found associated with p53-signaling pathways. | en | apollo | train |
Inhibitory activity of thymol against the formation and viability of Candida albicans hyphae.
As the capacity of Candida albicans to produce hyphae is considered an important virulence factor in the pathogenesis of candiasis, the aim of this study was to investigate whether thymol, the major component of thyme oil, can interfere with the filamentous forms of Candida albicans and their viability. The morphological transition from yeasts to filamentous forms was investigated by analysing the morphological index (MI), which classifies the differentiated forms and blastoconidia; viability was investigated by means of fluorescence microscopy using a new SYTO-9 and propidium iodide method previously used to stain only blastoconidia. Without thymol, there was an average of 94.00 +/- 3.06% hyphal forms. After 6 h of incubation with 1x MIC (125 microg ml(-1)), 1/2x MIC and 1/4x MIC of thymol, filamentation was, respectively, 14.33 +/- 8.25%, 28.33 +/- 7.17% and 45.67 +/- 8.09% in comparison with control (all statistically significant). In the absence of thymol, viable cells accounted for an average of 93.00 +/- 4.00% whereas, after 6 h of incubation with 1x MIC, 1/2x MIC and 1/4x MIC of thymol, the presence of 54.33 +/- 1.86%, 29.00 +/- 3.61% and 23.00 +/- 2.52% of yellow-orange coloured forms indicated damaged membranes and reduced viability. Our findings show that thymol interferes with the formation and viability of hyphae. This can be attributed to the characteristics of thymol disturbing Candida cell membranes and metabolism, probably by affecting fungal cell-wall synthesising enzymes. | en | apollo | train |
A hallucination is a perception in the absence of a stimulus that the person may or may not believe is real (Hallucinations are psychotic symptoms that occur when patients perceive stimuli that do not exist). Hallucinations may occur in any sensory modality—visual, auditory, olfactory, gustatory, tactile, proprioceptive, equilibrioceptive, nociceptive, thermoceptive. Hallucinations are different from illusions. In an illusory experience, a genuine sensation is attributed to an incorrect cause, misinterpreting a coat hanging on a door to be an intruder or thinking there is water on a hot road, due to the heat rising from the road. A delusional perception is where a genuine perception (ie. correctly sensed and interpreted) is given some additional (and typically bizarre) significance. Hypnagogic hallucinations and hypnopompic hallucinations are considered normal phenomena. Hypnagogic hallucinations can occur as one is falling asleep and hypnopompic hallucinations occur when one is waking up. Hallucinations may also be associated with drug use (particularly hallucinogenic drugs), sleep deprivation, psychosis or neurological illness.
Hallucinations may involve any of the five senses:
Auditory
Gustatory
Olfactory
Tactile
Visual
The most common type of hallucinations are auditory
Patients may either dismiss the hallucination as being false, or they may identify them to be true | en | apollo | train |
Aquablation therapy is a unique, next-generation BPH treatment that is changing the tradeoff between symptom relief and side effects. Patients can get significant symptom relief with less risk of side effects that impact their quality of life compared to the surgical gold-standard TURP.
In addition to a traditional cystoscopic camera, Aquablation therapy includes intraoperative ultrasound. Together, they provide the surgeon with a multi-dimensional view of the treatment area, enabling improved decision-making and treatment planning.
The surgeon maps the exact treatment contour, and then monitors with confidence as the robot autonomously executes the treatment plan, guiding the precisely calibrated waterjet with speed and accuracy.
Harnessing the unique power of water and pulsating near the speed of sound, Aquablation therapy removes prostatic tissue with a heat-free waterjet, eliminating the possibility of complications arising from thermal injury.
Aquablation therapy is delivered by the AquaBeam Robotic System , the world’s first autonomous tissue removal robot for the treatment of lower urinary tract symptoms (LUTS) due to BPH.
The intuitive design coupled with robotic execution allows for a short learning curve, short resection times and consistent, reproducible results.
Aquablation therapy is delivered by the AquaBeam System, the world’s first autonomous tissue removal robot for the treatment of BPH.
Backed by a global clinical trial, Aquablation therapy has demonstrated a superior safety profile when compared to transurethral resection of the prostate (TURP), the surgical gold standard.
The world’s first autonomous tissue removal robot for the treatment of BPH, offering the peace of mind that comes with consistency and precision. | en | apollo | train |
TRAF3IP2 mediates high glucose-induced endothelin-1 production as well as endothelin-1-induced inflammation in endothelial cells.
Hyperglycemia-induced production of endothelin (ET)-1 is a hallmark of endothelial dysfunction in diabetes. Although the detrimental vascular effects of increased ET-1 are well known, the molecular mechanisms regulating endothelial synthesis of ET-1 in the setting of diabetes remain largely unidentified. Here, we show that adapter molecule TRAF3 interacting protein 2 (TRAF3IP2) mediates high glucose-induced ET-1 production in endothelial cells and ET-1-mediated endothelial cell inflammation. Specifically, we found that high glucose upregulated TRAF3IP2 in human aortic endothelial cells, which subsequently led to activation of JNK and IKKβ. shRNA-mediated silencing of TRAF3IP2, JNK1, or IKKβ abrogated high-glucose-induced ET-converting enzyme 1 expression and ET-1 production. Likewise, overexpression of TRAF3IP2, in the absence of high glucose, led to activation of JNK and IKKβ as well as increased ET-1 production. Furthermore, ET-1 transcriptionally upregulated TRAF3IP2, and this upregulation was prevented by pharmacological inhibition of ET-1 receptor B using BQ-788, or inhibition of NADPH oxidase-derived reactive oxygen species using gp91ds-tat and GKT137831. Notably, we found that knockdown of TRAF3IP2 abolished ET-1-induced proinflammatory and adhesion molecule (IL-1β, TNF-α, monocyte chemoattractant protein 1, ICAM-1, VCAM-1, and E-selectin) expression and monocyte adhesion to endothelial cells. Finally, we report that TRAF3IP2 is upregulated and colocalized with CD31, an endothelial marker, in the aorta of diabetic mice. Collectively, findings from the present study identify endothelial TRAF3IP2 as a potential new therapeutic target to suppress ET-1 production and associated vascular complications in diabetes. NEW & NOTEWORTHY This study provides the first evidence that the adapter molecule TRAF3 interacting protein 2 mediates high glucose-induced production of endothelin-1 by endothelial cells as well as endothelin-1-mediated endothelial cell inflammation. The findings presented herein suggest that TRAF3 interacting protein 2 may be an important therapeutic target in diabetic vasculopathy characterized by excess endothelin-1 production. | en | apollo | train |
Macules are small, multiple, erythematous or faintly hypopigmented, with vague edges and shiny surface (Figure 28.10).Dermal signs comprise macules, diffuse papules, infiltration or nodules, or all four.If the examiner runs a finger around the lesion, just beyond the outer edge, a thickened sensory nerve may be palpated or a thickened nerve trunk may be felt in the vicinity, for example a thickened ulnar nerve if the lesion is on the arm. Less commonly the lesion is a macule, erythematous in light skins and hypopigmented (never depigmented) in dark skins (Figure 28.9). Such macules have a dry, hairless and insensitive surface. **Figure 28.7** Tuberculoid leprosy. Face of Pakistani woman showing erythematous plaque with a well-defined active edge, and a small satellite lesion. On the face, such lesions may not be anaesthetic. **Figure 28.8** Tuberculoid or borderline tuberculoid leprosy. Upper arm of Indian man, showing typical dry, hairless, hypopigmented plaque with scaly, erythematous edge. Such lesions are usually anaesthetic. **Figure 28.9** Tuberculoid or borderline tuberculoid leprosy. Back of a Nigerian child showing well-defined hypopigmented macule with altered skin texture. The lesion was anaesthetic. ###### Lepromatous leprosy
The first clinical manifestations are usually dermal (because early nerve involvement is usually asymptomatic), but they may go unnoticed by the patient, who often complains of other early symptoms; these include nasal symptoms of stuffiness, discharge and epistaxis [77], and oedema of legs and ankles due to increased capillary stasis and permeability. Dermal signs comprise macules, diffuse papules, infiltration or nodules, or all four. Macules are small, multiple, erythematous or faintly hypopigmented, with vague edges and shiny surface (Figure 28.10).regions of skin with the highest temperature).Hair growth and sensation are not initially impaired over the lesions.In polar LL, diffuse infiltration and gradual thickening of the dermis may precede nodulation by months or years (Figure 28.12).Lesions of oral mucosa occur as papules on lips and nodules on palate (which may perforate), uvula, tongue and gums (Figure 28.13). | en | apollo | train |
While not all of these uses of Augmentin are not approved by the FDA (Food and Drug Administration) and these are off-label.
Here are some common uses of Augmentin and Augmentin XR.
The use of Augmentin for the treatment of UTI is approved by FDA. However, it is not the first and foremost choice when it comes to the treatment of UTI, according to the Infectious Diseases Society of America (IDSA).
Augmentin is recommended only when other preferred medications like trimethoprim-sulfamethoxazole fail to treat the infection.
The use of Augmentin for the treatment of ear infection is approved by the FDA and is referred to as Otitis Media in both children and adults. However, Augmentin is not the first choice when it comes to the treatment of ear infection in children, according to the America Academy of Pediatrics (AAP).
It is recommended and used only for children who have already been treated with other preferred antibiotic medications like amoxicillin. Augmentin can also be used for the treatment of children who have already had treatment for ear infections, which amoxicillin failed to effectively treat.
The use of Augmentin for the treatment of sinus infection or sinusitis is approved by the FDA and in both children and adults. In fact, Augmentin is the first choice as medication when it comes to the treatment of sinusitis.
The most common type of skin infection is Cellulitis. The use of Augmentin for the treatment of some types of skin infections like Cellulitis, which is caused by bacteria, is approved by the FDA. However, it is not the first choice when it comes to the treatment of Cellulitis.
The use of Augmentin for the treatment of certain types of respiratory infections, including the one that infects bronchitis is approved by the FDA.
Bronchitis is often infected by bacteria or virus and antibiotics fail to treat the infection. Based on your medical condition, i.e. you have a really bad cough that does not go away for a long time, your doctor suspects that it could be a bacterial infection. In such a case, Augmentin is highly recommended to treat the respiratory tract infection.
The use of Augmentin for the treatment of strep throat is not approved by the FDA. This infection is also called streptococcus pharyngitis. Favoring the FDA, the Infectious Diseases Society of America also does not recommend Augmenting for the treatment of even a single case of strep throat.
The use of Augmentin for the treatment of diverticulitis is not approved by the FDA. While Augmentis is used as an off-label antibiotic for this treatment, Augmentin XR is usually preferred as the second option as an antibiotic for diverticulitis treatment.
In order to treat Acne and other skin-related allergies, antibiotics are often used. As it is one of the off-label uses of Augmentin, it usually is not the first and preferred antibiotic for Acne treatment.
Augmentin, like other medications, can have some side-effects ranging from mild to serious. Here is a list of some commonly observed side-effects of Augmentin. However, this list does not contain all of them.
Based on how you care for yourself and how religiously follow your doctor’s directions, these side-effects may go away from within a few days to a couple of weeks.
However, if you don’t see some side-effects of Augmentin, you must speak to your doctor about it. Side-effects in your case could be severe.
As soon as you experience any type of serious side-effects, you should seek medical help. For this, you can directly call your doctor or any or your immediately available family member and talk about the side-effects.
Well, there could be many more types of serious side-effects of Augmentin, based on your age and current health condition. Therefore, it is highly recommended to keep in touch with your doctor and always take Augmentin subject to the directions given by the doctor or a pharmacist.
For any unusual symptom or side-effect, immediately seek medical help for a high probability of successful treatment. | en | apollo | train |