Archive for January 2009
Mice with increased levels of a natural brain chemical don’t gain weight when fed a high-fat diet, researchers at UT Southwestern Medical Center have found.
The chemical, orexin, works by increasing the body’s sensitivity to the “weight-loss hormone,” leptin, the researchers report. Read the rest of this entry »
The insect’s flight path can be wirelessly controlled via a neural implant.
A giant flower beetle with implanted electrodes and a radio receiver on its back can be wirelessly controlled, according to research presented this week. Scientists at the University of California developed a tiny rig that receives control signals from a nearby computer. Electrical signals delivered via the electrodes command the insect to take off, turn left or right, or hover in midflight. The research, funded by the Defense Advanced Research Projects Agency (DARPA), could one day be used for surveillance purposes or for search-and-rescue missions.
TO SOME there is nothing so urgent that it cannot be postponed in favour of a cup of tea. Such procrastination is a mystery to psychologists, who wonder why people would sabotage themselves in this way. A team of researchers led by Sean McCrea of the University of Konstanz, in Germany, reckon they have found a piece of the puzzle. People act in a timely way when given concrete tasks but dawdle when they view them in abstract terms.
>>>>>>> Article in the Economist
What separates the few cancer cells that survive chemotherapy – leaving the door open to recurrence – from those that don’t? Weizmann Institute scientists developed an original method for imaging and analyzing many thousands of living cells to reveal exactly how a chemotherapy drug affects each one. Read the rest of this entry »
Omega-3s ease psychological distress and depressive symptoms often suffered by menopausal and perimenopausal women, according to researchers at Université Laval’s Faculty of Medicine. Their study, published in the February issue of The American Journal of Clinical Nutrition, presents the first evidence that omega-3 supplements are effective for treating common menopause-related mental health problems. Read the rest of this entry »
Posted January 31, 2009on:
Scientists have discovered an unexpected brain mechanism that modulates the regulation of sleep and the consequences of sleep deprivation. The research, published by Cell Press in the January 29th issue of the journal Neuron, opens new avenues for development of treatments for disorders and cognitive deficits associated with sleep loss. Read the rest of this entry »
Virginia Commonwealth University researchers have found that the protein Stat3 plays a key role in regulating mitochondria, the energy-producing machines of cells. This discovery could one day lead to the development of new treatments for heart disease to boost energy in failing heart muscle or to master the abnormal metabolism of cancer. Read the rest of this entry »