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Member of School for Health team made National Teaching Fellow
07-02-2007 · University of BathThe Higher Education Academy has selected Tim Bilham from the School for Health as one of fifty National Teaching Fellows for 2007.
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- Research team enlightens the reasons for severe blindness
08-06-2007 · EurekAlert!
Coordinated by the geneticist Ronald Roepman from Nijemegen, an important step has now been made in this direction by an international research team with the participation of the GSF-National Research Center for Environment and Health: They identified a further gene for the inherited retinal disease Leber Congenital Amaurosis and discovered first evidences how it functions.
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- International scientists tackle obstacles to treating brain disorders
12-20-2007 · EurekAlert!
A research team led by scientists at the University of Minnesota Medical School and Oregon Health & Science University have outlined the challenges and made suggestions on how to advance research and improve treatments for brain disorders.
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- NIH scientists target future pandemic strains of H5N1 avian influenza
08-09-2007 · EurekAlert!
Preparing vaccines and therapeutics that target a future mutant strain of H5N1 influenza virus sounds like science fiction, but it may be possible, according to a team of scientists at the National Institute of Allergy and Infectious Diseases, a component of the National Institutes of Health, and a collaborator at Emory University School of Medicine. Success hinges on anticipating and predicting the crucial mutations that would help the virus spread easily from person-to-person.
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- Advance in understanding of blood pressure gene could lead to new treatments
02-04-2007 · EurekAlert!
Research by scientists at UCL (University College London) has clearly demonstrated for the first time the structure and function of a gene crucial to the regulation of blood pressure. The discovery could be important in the search for new treatments for illnesses such as heart disease, the UK's biggest killer. In a paper published online today in Nature Medicine, the team, led by Professor Patrick Vallance and Dr James Leiper, UCL Department of Medicine, reveal the role of the human gene dimethylarginine dimethylaminohydrolase (DDAH), showing that loss of DDAH activity disrupts nitric oxide (NO) production. NO is critical in the regulation of blood pressure, nervous system functions and the immune system. The role of DDAH is to break down modified amino acids (Asymmetric dimethylarginine (ADMA) and monomethyl arginine (L-NMMA)) that are produced by the body and have been shown to inhibit NO synthase. These molecules accumulate in various disease states including diabetes, renal failure and pulmonary and systemic hypertension, and their concentration in plasma (the fluid component of blood) is strongly predicative of cardiovascular disease and death. In a healthy human body, the majority of ADMA is eliminated through active metabolism by DDAH. Scientists have hypothesised that if DDAH function is impaired, NO production is reduced, and that this could be an important feature of increased cardiovascular risk. To examine this pathway in more detail, the researchers deleted the DDAH gene in mice. These mice went on to develop hypertension, or high blood pressure. They also designed specific inhibitors (small molecules) which bind to the active site of human DDAH. These small molecule inhibitors also induced hypertension in mice, confirming the importance of DDAH in the regulation of blood pressure. Dr Leiper, UCL Medicine, said: “These genetic and chemical approaches to disrupt DDAH showed remarkably consistent results, and provide compelling evidence that loss of DDAH function increases the concentration of ADMA and thereby disrupts vascular NO signalling. “There has been considerable scientific interest in this pathway and the role of ADMA as a novel risk factor, but so far there's been little evidence to support the idea that it's a cause of disease, rather than just a marker. Genes and their pathways are crucial to our understanding of cardiovascular disease and a better understanding of DDAH-1 could lead to important new treatments. “It could help us to establish if genetic variation predisposes certain people to these diseases, or whether environmental factors exert some of their effects through modulation of DDAH activity. “Our research also shows that this pathway could be harnessed therapeutically to limit production of NO in certain situations where too much nitric oxide is a bad thing; for example, hypotension and septic shock. These are some of the biggest problems in intensive care medicine and there is a huge unmet need for drug treatments.” The study, which was carried out at UCL's Rayne Institute, was funded by grants from the British Heart Foundation, the Wellcome Trust and the Medical Research Council. Professor Jeremy Pearson, Associate Medical Director of the British Heart Foundation, said: "The unexpected finding in the 1980s that a simple gas, nitric oxide (NO), is made by cells in the blood vessel wall and is a powerful control of blood vessel relaxation led to the award of the Nobel Prize in 1998 to its discoverers. "More recently, there has been increasing evidence that impairment of NO production is likely to be an important factor in the development of heart and circulatory disease, but the mechanisms responsible are not fully understood. "This study suggests for the first time that the loss of the activity of the enzyme DDAH-1 leads to reduced NO production and may cause heart and circulatory disease. These findings are likely to be important in the search for new ways to optimise the health of our blood vessels." ### Notes for Editors 1. For more information, please contact Ruth Metcalfe in the UCL Media Relations Office on tel: +44 (0)20 7679 9739, mobile: +44 (0)7990 675 947, out of hours: +44 (0)7917 271 364, e-mail: r.metcalfe@ucl.ac.uk2. 'Disruption of methylarginine metabolism impairs vascular homeostasis' is published in the February issue of the journal Nature Medicine. Advance online publication is embargoed to 18.00 GMT (13.00 US Eastern) Sunday 4 February 2007. Journalists can obtain copies of the paper by contacting the UCL Media Relations Office.3. The study was funded by the British Heart Foundation, the Wellcome Trust and the Medical Research Council. About UCL Founded in 1826, UCL was the first English university established after Oxford and Cambridge, the first to admit students regardless of race, class, religion or gender, and the first to provide systematic teaching of law, architecture and medicine. In the government's most recent Research Assessment Exercise, 59 UCL departments achieved top ratings of 5* and 5, indicating research quality of international excellence. UCL is the fourth-ranked UK university in the 2006 league table of the top 500 world universities produced by the Shanghai Jiao Tong University. UCL alumni include Mahatma Gandhi (Laws 1889, Indian political and spiritual leader); Jonathan Dimbleby (Philosophy 1969, writer and television presenter); Junichiro Koizumi (Economics 1969, Prime Minister of Japan); Lord Woolf (Laws 1954, Lord Chief Justice of England & Wales); Alexander Graham Bell (Phonetics 1860s, inventor of the telephone), and members of the band Coldplay.
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- Scripps Research scientists reveal pivotal hearing structure
09-05-2007 · EurekAlert!
A team of scientists made up of two laboratory groups from the Scripps Research Institute and one from the National Institutes of Health has shed light on how our bodies convert vibrations entering the ear into electrical signals that can be interpreted by the brain. Exactly how the electrical signal is generated has been the subject of ongoing research interest.
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- Make way for the real nanopod
10-31-2007 · EurekAlert!
Make way for the real nanopod and make room in the Guinness World Records. A team of researchers with the US Department of Energy's Lawrence Berkeley National Laboratory and the University of California at Berkeley have created the first fully-functional radio from a single carbon nanotube, which makes it by several orders of magnitude the smallest radio ever made.
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- Standard therapy more effective than diabetes drug in helping women with PCOS achieve pregnancy
02-07-2007 · EurekAlert!
Metformin, a drug used to treat diabetes and once thought to have great promise in overcoming the infertility associated with polycystic ovary syndrome (PCOS), is less effective than the standard fertility drug treatment, clomiphene, according to researchers from the University of Pennsylvania School of Medicine and the National Institutes of Health Reproductive Medicine research network.
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- Study examines characteristics of female high school students who report steroid use
06-04-2007 · EurekAlert!
Steroid use among teen girls is not limited to those involved in competitive athletics and is associated with a cluster of other health-harming behaviors, including smoking and taking diet pills, according to results of a national survey published in the June issue of Archives of Pediatrics & Adolescent Medicine, one of the JAMA/Archives journals.
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- Researchers find connection between caloric restriction and longevity
09-20-2007 · EurekAlert!
Scientists at Harvard Medical School, Cornell Medical School and the National Institutes of Health have discovered how caloric restriction enables cells -- and many higher mammals -- to live longer and healthier lives.
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- Novel approach strips staph of virulence
02-14-2008 · EurekAlert!
An international team of researchers supported by the National Institutes of Health has blocked staph infections in mice using a drug previously tested in clinical trials as a cholesterol-lowering agent. The novel approach, described in the Feb. 14 online edition of Science, could offer a new direction for therapies against a bacterium that's becoming increasingly resistant to antibiotics.
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