الأحد، 27 مايو 2012

ScienceDaily: Health & Medicine News

ScienceDaily: Health & Medicine News


New prostate cancer screening guidelines face a tough sell, study suggests

Posted: 26 May 2012 04:13 PM PDT

Recent recommendations from the US Preventive Services Task Force advising elimination of routine prostate-specific antigen screening for prostate cancer in healthy men are likely to encounter serious pushback from primary care physicians, according to results of a new survey.

Tongue analysis software uses ancient Chinese medicine to warn of disease

Posted: 26 May 2012 04:13 PM PDT

Researchers have developed computer software that automatically analyzes images of the tongue, one of the measures used to classify the overall physical status of the body, or zheng, in Chinese traditional medicine.

Skp2 activates cancer-promoting, glucose-processing Akt

Posted: 26 May 2012 04:12 PM PDT

E3 ligase's role makes it target for defeating Herceptin resistance, stifling cancer's preferred diet.

Drug destroys human cancer stem cells but not healthy ones

Posted: 24 May 2012 09:28 AM PDT

Scientists have discovered that a drug, thioridazine, successfully kills cancer stem cells in the human while avoiding the toxic side-effects of conventional cancer treatments. To test more than a dozen different compounds, researchers pioneered a fully automated robotic system to identify several drugs, including thioridazine.

Why humans don't smell as well as other mammals: No new neurons in the human olfactory bulb

Posted: 24 May 2012 06:22 AM PDT

The human olfactory bulb – a structure in the brain that processes sensory input from the nose – differs from that of other mammals in that no new neurons are formed in this area after birth. The discovery is based on the age-determination of the cells using the carbon-14 method, and might explain why the human sense of smell is normally much worse than that of other animals.

Women trying to have babies also need to think about circadian clock

Posted: 23 May 2012 05:07 PM PDT

A new study shows that the biological clock is not the only clock women trying to conceive should consider. The circadian clock needs attention, too. The findings draw a clear line between disrupted circadian rhythms and reproductive physiology. The researchers are the first to show that if you disrupt the circadian clock environmentally in mice, with repeated changes in their light-dark cycles, there are problems with pregnancy outcomes. And the effect can be dramatic.

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