Volume 9 Issue 38
Published - 14:00 UTC 08:00 EST 7-Feb-2007 
Next Update - 14:00 UTC 08:00 EST 8-Feb-2007

Editor: Susan K. Boyer, RN
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Machine learning could speed up radiation therapy for cancer patients

A new computer-based technique could eliminate hours of manual adjustment associated with a popular cancer treatment. In a paper published in the Feb. 7 issue of Physics in Medicine and Biology, researchers from Rensselaer Polytechnic Institute and Memorial Sloan-Kettering Cancer Center describe an approach that has the potential to automatically determine acceptable radiation plans in a matter of minutes, without compromising the quality of treatment. more  

Children who sleep less more likely to be overweight

Research indicates that getting inadequate sleep has negative effects on children's social and emotional well-being and school performance. Now a Northwestern University study finds it also increases their risk of being overweight. more

Older adults face double whammy when it comes to body fat

When it comes to body fat, today's older adults face a double whammy, according to new research from Wake Forest University School of Medicine and colleagues. Up until age 80, older adults not only gain fat as they age -- but because of the obesity epidemic -- they actually begin their older years fatter. more  

Young adolescent girls' depression is tied to more stressful life events

Children's conduct problems--skipping school, sneaking out of the house, lying to parents, shoplifting, or bullying other children--are a major source of concern for parents and teachers. As a potential cause of these problems, parents' marital conflict has received a lot of research attention. Now a new study finds that parents' fighting may not be to blame but rather that parents who argue a lot may pass on genes for disruptive behavior to their children. more

Researchers discover master metabolism regulator with links to obesity, heart disease, and malnutrition  

Two biologists at Penn State have discovered a master regulator that controls metabolic responses to a deficiency of essential amino acids in the diet. They also discovered that this regulatory substance, an enzyme named GCN2 eIF2alpha kinase, has an unexpectedly profound impact on fat metabolism. "Some results of our experiments suggest interventions that might help treat obesity, prevent Type II diabetes and heart attacks, or ameliorate protein malnutrition," said Douglas Cavener, professor and head of the Department of Biology, who led the research along with Feifan Guo, a research assistant professor. Their research will appear in the 7 February 2007 issue of the scientific journal Cell Metabolism. more

Statin therapy associated with regression of coronary atherosclerosis with key lipid level changes  

An analysis of data from four clinical trials suggests that statin therapy is associated with regression of coronary atherosclerosis when low-density lipoprotein cholesterol (LDL-C or "bad" cholesterol) is substantially reduced and high-density lipoprotein cholesterol (HDL-C or "good" cholesterol) is increased, but it remains to be determined whether this degree of atherosclerosis regression will translate to meaningful reductions in cardiovascular events, according to a study published in the February 7 issue of JAMA. more

Researchers identify 5 genetic variations associated with risk of venous thrombosis in women

Researchers have identified new genetic variations that may be associated with the risk of developing nonfatal venous thrombosis in postmenopausal women, according to a study in the February 7 issue of JAMA. more

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Inadequate sleep has negative effects on children's social and emotional well-being and school performance.