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Science News for June 3, 2009


Brain irradiation in lung cancer

A national RTOG study found that prophylactic cranial irradiation (PCI) significantly decreased the incidence of brain metastases during the first year post-treatment. Patients who received PCI were two and one-half times less likely to develop brain metastasis than those who did not.

Cantabrian cornice has experienced 7 cooling and warming phases over past 41,000 years

The study analyzed fossil remains of small vertebrates in the El Mirón cave, revealing seven periods of cooling and warming in the region's climate. The findings suggest that forest-dwelling rodents flourished during warmer periods, while cold-adapted species survived and migrated to northern Europe.

SourceSpanish Foundation for Science and Technology·JournalJournal of Archaeological Science·DateJun 3, 2009

Diet may reduce risk of prostate cancer

A diet rich in fruits and vegetables, such as tomatoes, cauliflower, and broccoli, may help prevent prostate cancer. Avoiding high-energy intake, excessive meat, dairy products, and calcium may also be beneficial.

SourceWiley·JournalJournal of Human Nutrition and Dietetics·DateJun 3, 2009

Single women gaze longer

Researchers found that single women spend more time evaluating photos of men than those with partners. The study suggests that women's reproductive strategies may influence their interest in potential partners.

SourceSpringer·JournalHuman Nature·DateJun 3, 2009

Scientists discover new genetic immune disorder in children

Researchers at NIH/National Institute of Arthritis and Musculoskeletal and Skin Diseases have discovered a new autoinflammatory syndrome, DIRA, which affects children from birth to 2 weeks of age. The disorder is caused by mutations in the IL1RN gene and can be treated with anakinra, a synthetic form of human IL-1Ra.

Small molecules mimic natural gene regulators

Researchers at the University of Michigan have developed small molecules that mimic the behavior and function of a natural regulator of gene expression, binding to a key protein and promoting gene activity. This breakthrough could lead to new approaches for treating diseases caused by errors in gene regulation.

SourceUniversity of Michigan·JournalACS Chemical Biology·DateJun 3, 2009

Stepping up minority recruiting

The Temple University School of Medicine is launching a new program to educate minority researchers, thanks to a five-year $500,000 NIH grant. The Short Term Education Program for Undergraduate and Predoctoral students (STEP UP) will provide training and hands-on experience in biomedical research topics.

Estrogen linked to lowered immunity in fish

Research by USGS scientists links estrogen exposure to reduced immune response in largemouth bass, potentially making them more vulnerable to diseases. The study reveals that estrogen blocks production of hepcidin, a hormone that regulates iron and has antimicrobial properties.

SourceU.S. Geological Survey·JournalFish & Shellfish Immunology·DateJun 3, 2009

Hydrogen peroxide marshals immune system

Researchers have discovered that hydrogen peroxide is released from wounds and triggers the recruitment of white blood cells to combat infection. The finding suggests that high levels of hydrogen peroxide may be involved in conditions like asthma and inflammatory gut diseases, warranting further investigation.

SourceHarvard Medical School·JournalNature·DateJun 3, 2009

Could new government regulations lead to increased use of physical restraints?

A leading gerontologist warns that new regulations may lead to a resurgence in physical restraints, which can cause medical complications and erode two decades of progress in reducing their use. Alternative strategies, such as the Hospital Elder Life Program (HELP), are more effective in preventing falls and maintaining patient safety.

SourceBeth Israel Deaconess Medical Center·JournalNew England Journal of Medicine·DateJun 3, 2009