الخميس، 19 أبريل 2012

ScienceDaily: Health & Medicine News

ScienceDaily: Health & Medicine News


Kidney stone mystery solved: Why some people are more prone to develop kidney stones

Posted: 18 Apr 2012 05:35 PM PDT

New research provides evidence to explain why some people are more likely to develop kidney stones than others. Their discovery opens the door to finding effective drug treatments and a test that could assess a person's risk of the condition.

Marijuana use higher in young adult smokers than previously reported

Posted: 18 Apr 2012 05:35 PM PDT

Half of young adult tobacco smokers also have smoked marijuana in the last 30 days, according to a recent Facebook-based survey, indicating a greater prevalence of marijuana and tobacco co-use among smokers age 18-25 than previously reported.

Lactating tsetse flies models for lactating mammals?

Posted: 18 Apr 2012 01:23 PM PDT

An unprecedented study of intra-uterine lactation in the tsetse fly reveals that an enzyme found in the fly's milk functions similarly in mammals, making the tsetse a potential model for lipid metabolism during mammalian lactation. Better yet, reduced levels of this enzyme led to poor health in offspring, leading the authors to suggest that targeting it could help decrease the tsetse population in Africa and so reduce the incidence of sleeping sickness.

Non-surgical test for brain cancer

Posted: 18 Apr 2012 10:53 AM PDT

In a breakthrough for the way brain cancer is diagnosed and monitored, researchers have demonstrated that brain tumors can be reliably diagnosed and monitored without surgery. Previously, an accurate non-surgical test to detect brain tumors was unavailable and methods of monitoring a brain tumor's progression or response to treatment were not reliable.

Not by DNA alone: How the epigenetics revolution is fostering new medicines

Posted: 18 Apr 2012 10:53 AM PDT

Scientific insights that expand on the teachings of Mendel, Watson and Crick, and underpinnings of the Human Genome Project are moving drug companies along the path to development of new medicines based on deeper insights into how factors other than the genetic code influence health and disease. That's the topic of the cover story in Chemical & Engineering News, the weekly news magazine of the American Chemical Society, the world's largest scientific society.

Scientists regenerate damaged mouse hearts by transforming scar tissue into beating heart muscle

Posted: 18 Apr 2012 10:50 AM PDT

Scientists have announced a medical breakthrough that one day may help doctors restore hearts damaged by heart attacks -- by converting scar-forming cardiac cells into beating heart muscle.

Joint failures potentially linked to oral bacteria

Posted: 18 Apr 2012 08:20 AM PDT

The culprit behind a failed hip or knee replacements might be found in the mouth. DNA testing of bacteria from the fluid that lubricates hip and knee joints had bacteria with the same DNA as the plaque from patients with gum disease and in need of a joint replacement.

Big doses of vitamin C may lower blood pressure

Posted: 18 Apr 2012 08:18 AM PDT

Taking large doses of vitamin C may moderately reduce blood pressure, according to an analysis of years of research. But the researchers stopped short of suggesting people load up on supplements.

Green-glowing fish provides new insights into health impacts of pollution

Posted: 18 Apr 2012 06:54 AM PDT

Understanding the damage that pollution causes to both wildlife and human health is set to become much easier thanks to a new green-glowing zebrafish. The fish makes it easier than ever before to see where in the body environmental chemicals act and how they affect health. The fluorescent fish has shown that estrogenic chemicals, which are already linked to reproductive problems, impact on more parts of the body than previously thought.

First description of a triple DNA helix in vacuum

Posted: 18 Apr 2012 06:53 AM PDT

Scientists have managed for the first time to extract trustworthy structural information from a triple helix DNA in gas phase, that is to say in conditions in which DNA is practically in a vacuum. This research could bring the development of antigen therapy based on these DNA structures closer.

Hair regeneration from adult stem cells

Posted: 18 Apr 2012 06:50 AM PDT

Scientists have demonstrated "functional hair regeneration from adult stem cells." This is a substantial advance in the development of next-generation of "organ replacement regenerative therapies."

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