Daily non-political popular news in brief.
First-time analysis reveals millions of Europeans left at risk from influenza
11-20-2006 · EurekAlert!A powerful analysis from this month's Vaccine highlights the huge gap between current vaccination coverage across Europe and the recommendations endorsed by the European Union. Currently, only one-third of all high-risk populations are receiving seasonal influenza vaccine in Europe, resulting in avoidable morbidity, hospitalizations and mortality.
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- Doctor urges health-care workers to be alert to suicide risk amongst cancer patients
10-18-2006 · EurekAlert!
A Canadian oncologist has urged doctors and other health-care professionals to be more aware of the potential risk of suicide among cancer patients and to offer extra support to the most vulnerable and their families. Analysis of 1.3 million American cancer patients (online Annals of Oncology Oct. 19) reveals suicide rate two to two and half times that of general population.
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- DNA analysis reveals rapid population shift among Pleistocene cave bears
02-19-2007 · EurekAlert!
Studying DNA obtained from teeth of ancient cave bears, researchers have been able to identify a shift in a particular population of the bears inhabiting a European valley in the late Pleistocene era. The findings illustrate the ability of DNA sequence analysis to reveal aspects of animal population dynamics in the distant past and potentially illuminate the influence of human migrations in animal population changes.
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- Children's sleep problems can lead to school problems
02-07-2007 · EurekAlert!
Although it is known that children with sleep difficulties are likely to have school difficulties, new research reveals that this connection between sleep and school performance is related to a child's socioeconomic and ethnic/racial background. The study observed 166 8- and 9-year-old African-American and European-American children from a range of socioeconomic backgrounds. The findings showed that African-American children were at increased risk of cognitive difficulties when sleep was disrupted.
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- Recovering from a mass extinction
01-18-2008 · EurekAlert!
The full recovery of ecological systems, following the most devastating extinction event of all time, took at least 30 million years, according to new research from the University of Bristol. Previous work indicates that life bounced back quite quickly, but this was mostly in the form of 'disaster taxa' (opportunistic organisms that filled the empty ecospace left behind by the extinction).
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- Radar reveals view of land beneath polar ice
12-11-2006 · EurekAlert!
In the first test of a new radar instrument, scientists have seen through more than a mile of Greenland ice to reveal an image of land that has been hidden for millions of years. Ohio State University scientists and their colleagues will use what they learn from the instrument, dubbed GISMO (for Global Ice Sheet Mapping Orbiter), to determine how global climate change will affect the ice.
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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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- University of Leicester research reveals rice bran could reduce risk of intestinal cancer
03-27-2007 · EurekAlert!
A study by biomedical scientists at the University of Leicester has revealed for the first time that rice bran could reduce the risk of intestinal cancer.
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- Study finds western-style 'meat-sweet' diet increases risk of breast cancer in postmenopausal women
07-10-2007 · EurekAlert!
A new study finds that the more "western" the diet -- marked by red meat, starches and sweets -- the greater the risk for breast cancer among postmenopausal Chinese women. According to researchers who conducted the analysis at Fox Chase Cancer Center in Philadelphia, Harvard University, Shanghai Cancer Institute and Vanderbilt University, the findings mark the first time a specific association between a western diet and breast cancer has been identified in Asian women.
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- Vitamin D supplements appear to be associated with lower risk of death
09-10-2007 · EurekAlert!
Individuals who take vitamin D supplements appear to have a lower risk of death from any cause over an average follow-up time of six years, according to a meta-analysis of 18 previously published studies in the Sept. 10 issue of Archives of Internal Medicine, one of the JAMA/Archives journals.
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- Using the safety belt in the rear seats of the car reduces death risk by almost a half
01-29-2008 · EurekAlert!
A study carried out at the University of Granada reveals that women and children younger than three years old who travel in the rear seats of the car are ore likely to die in the event of a road crash than men. The research work also points out that the left side of the inside is more dangerous than the central or the right side.
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