ROCHESTER, Minn. -- Mayo Clinic researchers have shown why, in a minority of HIV patients, immune function improves despite a lack of response to standard anti-retroviral treatment. In these cases, researchers say, the virus has lost its ability to kill immune cells. The findings appear in the online journal PLoS Pathogens.
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Montreal, November 30, 2010 – Approximately 13 percent of parents turn to alternative therapies to treat their children's asthma, according to a new study from the Université de Montréal. The findings, published recently in the Canadian Respiratory Journal, suggest that this trend is associated with a two-fold higher rate of poor asthma control in children.
Children aren't the only youngsters who are picky eaters: More than half of all species are believed to change their diets -- sometimes more than once -- between birth and adulthood. And a new study by ecologists at Rice University and the University of California, Santa Barbara, finds this pattern has major implications for the survival of threatened species and the stability of natural ecosystems.
INDIANAPOLIS -- The major challenge for public health in the era of genomics is to generate the base of evidence necessary to demonstrate when use of genomic information in public health can improve health outcomes in a safe, effective and cost-effective manner, participants at an international meeting have concluded.
Scientists are calling for radical new approaches to conservation following the first biodiversity audit of its kind.
Led by the University of East Anglia (UEA), with partners Natural England, the Forestry Commission, Norfolk and Suffolk Biodiversity Partnerships and County Councils, the Brecks Partnership, and Plantlife, the painstaking study pooled information on every plant and animal species recorded in Breckland – a special landscape of heathland, forest and farmland stretching across the Norfolk and Suffolk border.
In a unique study involving young boa constrictors, University of Cincinnati researchers put snakes to work on varying diameters and flexibility of vertical rope to examine how they might move around on branches and vines to gather food and escape enemies in their natural habitat. The findings by Greg Byrnes, a University of Cincinnati postdoctoral fellow in the department of biological sciences, and Bruce C. Jayne, a UC professor of biology, are published in the December issue of The Journal of Experimental Biology.
A European consortium comprising the National Physical Laboratory, ST Microelectronics, the University of Edinburgh, and TU Delft has been involved in the development and application of the Megaframe Imager - an ultrafast camera capable of recording images at the incredible rate of one million frames
Since the introduction of solid-state optical sensors, like those found in digital cameras, the main trend has been towards increasing the resolution (i.e. number of pixels) while miniaturising the chip.
Geo-microbiologists from Arizona State University have solved a long-standing conundrum about how some photosynthetic microorganisms, endolithic cyanobacteria, bore their way into limestone, sand grains, mussel shells, coral skeletons and other substrates composed of carbonate.
DALLAS, Nov. 29, 2010 — Women with a history of migraine headache with aura (transient neurological symptoms, mostly visual impairments) are at increased risk of stroke. However, according to new research reported in Circulation: Journal of the American Heart Association stroke events in women with migraine with aura are more likely to have mild or no disability compared to those without migraine.
New Haven, Conn.—The risk of dying from a heat wave is highest when heat waves occur early in the summer and are hotter and longer than usual, according to a Yale study published in the journal Environmental Health Perspectives (EHP).
In a new UCSF study of more than 2 million mammogram screenings performed on nearly 700,000 women in the United States, scientists for the first time show a direct link between reduced hormone therapy and declines in ductal carcinoma in situ (DCIS) as well as invasive breast cancer. The researchers saw such a striking decrease, they believe they also have uncovered indirect evidence that hormones promote breast tumor growth.
The declines occurred in the age groups that most widely embraced then abandoned hormone therapy.
SEATTLE – The worst global economic crisis in decades has not stopped public and private donors from giving record amounts of money to health assistance for developing countries, according to a new report by the Institute for Health Metrics and Evaluation (IHME) at the University of Washington.
CHICAGO – People with obstructive sleep apnea (OSA), a sleep disorder associated with obesity, have more non-calcified or "bad" plaque in their coronary arteries, according to a study presented today at the annual meeting of the Radiological Society of North America (RSNA).