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Study shows that a larger abdomen in midlife increases risk of dementia

People in their 40s with larger stomachs have a higher risk for dementia when they reach their 70s, according to a study published in the March 26, 2008, online issue of Neurology®, the medical journal of the American Academy of Neurology .

28 Mar 2008

International team of scientists discover clue to delay of life on Earth

Scientists from around the world have reconstructed changes in Earth's ancient ocean chemistry during a broad sweep of geological time, from about 2.5 to 0.5 billion years ago.

28 Mar 2008

Increasing access to antiretroviral drugs would drastically cut AIDS deaths in South Africa

More that 1.2 million deaths could be prevented in South Africa over the next five years by accelerating efforts to provide access to antiretroviral therapy (ART), according to a study released online today by the Journal of Infectious Diseases.

28 Mar 2008

Insulin-like growth factor found to have new role in development of brain's smell center

A human hormone known to stimulate the growth of cells throughout the body has a new role - helping to set up the proper nerve connections in the odor center of the brain, according to University of California, Berkeley, scientists.

28 Mar 2008

FDA issues Salmonella Litchfield alert for cantaloupe from Agropecuaria Montelibano

The U.S. Food and Drug Administration has issued an import alert regarding entry of cantaloupe from Agropecuaria Montelibano, a Honduran grower and packer, because, based on current information, fruit from this company appears to be associated with a Salmonella Litchfield outbreak in the United States and Canada.

28 Mar 2008

FDA makes recommendations on medical devices that treat blocked heart arteries

U.S. Food and Drug Administration Commissioner Andrew C. von Eschenbach has announced that the agency has issued draft guidelines to aid the development, testing and manufacture of coronary drug-eluting stents, devices used to treat blocked heart arteries.

28 Mar 2008

FDA deadlines may compromise drug safety by rushing approval

Many medications are approved by the U.S. Food and Drug Administration on the brink of congressionally mandated deadlines, and those drugs are more likely to face later regulatory intervention than those approved with greater deliberation, researchers at Harvard University have found.

28 Mar 2008

Environmental factors linked to development of autoimmune diseases

Scientists working at the MRC National Institute for Medical Research have shown that environmental factors can influence the development of autoimmune diseases like multiple sclerosis.

28 Mar 2008

Dental chair a possible source of neurotoxic mercury waste

Mercury is a large component of dental fillings, but it is not believed to pose immediate health risks in that form.

28 Mar 2008

Calcium deposits in coronary arteries provide a strong predictor for possible future heart problems

Calcium deposits in coronary arteries provide a strong predictor for possible future heart attacks and cardiac diseases, and detecting such deposits can be valuable for promoting overall cardiac health, according to a study led by the University of California, Irvine and appearing in the March 28 issue of the New England Journal of Medicine.

28 Mar 2008

Gambling addicts don't learn from their mistakes

Gambling addicts don't learn from their mistakes, according to a study published today in the open access journal Clinical Practice and Epidemiology in Mental Health.

28 Mar 2008

The brain can sense the calories in food, independent of taste

Their finding that the brain's reward system is switched on by this “sixth sense” machinery could have implications for understanding the causes of obesity. For example, the findings suggest why high-fructose corn syrup, widely used as a sweetener in foods, might contribute to obesity.

28 Mar 2008

Brain scientist shedding light on learning, memory

Neurons spoke to Dr. Joe Z. Tsien when he was a sophomore college student searching for some meaningful extracurricular activity.

28 Mar 2008

Beetle genome opens the door to developmental research

The whole DNA sequence of the red flour beetle, familiar to many as an unwelcome visitor to the kitchen flour jar, has been published in Nature .

28 Mar 2008

New method of filming blood-vessel cells

A new method of filming blood-vessel cells that move in accordance with targeted signals has been developed by researchers at Uppsala University in collaboration with researchers at the University of California.

28 Mar 2008

Pectin-rich apple products shown to have anticarcinogenic effects on colon

The apples and apple juice you consume may have positive effects in one of the most unlikely places in the body – in the colon.

28 Mar 2008

Scientists isolate, characterize the organism that causes Buruli ulcer

An international team of 17 researchers from four countries has for the first time isolated from the environment and fully characterized the organism that causes Buruli ulcer.

28 Mar 2008

New nanoparticles for targeting tumors

As a wide variety of nanoparticles continue to demonstrate their ability to improve the delivery of imaging agents and drugs to tumors, nanoparticle researchers have turned their attention to the challenge of systematically determining how a given nanoparticle’s physical and chemical characteristics affect its ability to target tumors. Such data could provide drug developers with guidelines to help them select the most effective type of nanoparticle for a given therapeutic or imaging application.

28 Mar 2008

Anticancer siRNA therapy advances, thanks to nanoparticles

Small pieces of nucleic acid, known as siRNAs (short interfering RNAs), can turn off the production of specific proteins, a property that makes them one of the more promising new classes of anticancer drugs in development. Indeed, at least two siRNA-based anticancer therapies, both delivered to tumors in nanoparticles, have begun human clinical trials. Now, three new reports highlight the progress that researchers are making in developing broadly applicable, nanoparticle-enabled siRNA anticancer therapeutics.

28 Mar 2008

Astrotechnology brings nanoparticle probes into sharper focus

While pondering the challenges of distinguishing one nanosize probe image from another in a mass of hundreds or thousands of nanoprobes, two investigators at Emory University and the Georgia Institute of Technology made an interesting observation. The tiny, clustered dots of light looked a lot like a starry sky on a clear night.

27 Mar 2008