الأحد، 29 يناير 2012

ScienceDaily: Top News

ScienceDaily: Top News

Scientists probe form, function of mysterious protein

Posted: 27 Jan 2012 11:10 AM PST

Using computer models and laboratory experiments, scientists have probed the structure of the protein mitoNEET to better understand its role in aging, cancer and diabetes. They found the protein could untangle its arms at one end to loosen its grip on a potentially toxic molecule of iron and sulfur.

Collaborative research sheds light on new cancer stem cell therapies

Posted: 27 Jan 2012 10:54 AM PST

New anti-cancer research has led to the development of a novel class of chemical inhibitors that specifically target cancer cells with pluripotency.

Jostling for position: Competition at the root of diversity in rainforests

Posted: 26 Jan 2012 11:29 AM PST

Another attractive theory falls foul of the facts. A census of trees in rainforests on three continents has confirmed that competition plays a central role in structuring communities. This contradicts the so-called neutral theory in ecology, which views random fluctuations as the decisive factor.

Caffeine consumption and estrogen changes: Moderate caffeine intake linked to higher level for Asians, lower for whites

Posted: 26 Jan 2012 08:59 AM PST

Asian women who consumed an average of 200 milligrams or more of caffeine a day -- the equivalent of roughly two cups of coffee -- had elevated estrogen levels when compared to women who consumed less, according to a study of reproductive age women.

Hurricane Katrina survivors struggle with mental health years later

Posted: 26 Jan 2012 06:25 AM PST

Survivors of Hurricane Katrina have struggled with poor mental health for years after the storm, according to a new study of low-income mothers in the New Orleans area.
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