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Science News Archive 2007 - Page 18


Page 18 of 203

A molecular map for aging in mice

Researchers created a molecular map of aging in mice by analyzing gene expression changes in 16 different tissues. The study found that different tissues exhibit distinct patterns of aging, suggesting three separate clocks for aging, and that some pathways are shared with human aging.

SourcePLOS·JournalPLOS Genetics·DateNov 28, 2007

Use it or lose it

Research by The Peninsula College of Medicine and Dentistry found that maintaining physical activity in middle age leads to better basic physical abilities as we age. Physical activity is associated with fewer than 13% of people developing physical disability. Weight is not a deciding factor in this benefit.

SourceThe Peninsula College of Medicine and Dentistry·JournalJournal of the American Geriatrics Society·DateNov 28, 2007

Limited biofuel feedstock supply?

Researchers report that sustainable biomass production may be hindered by soil organic matter needs, suggesting a need for alternative crops and improved agricultural practices. The study highlights the importance of considering multiple factors beyond just soil erosion when evaluating feedstock supply.

SourceAmerican Society of Agronomy·JournalAgronomy Journal·DateNov 28, 2007

Drug boosts platelets in hepatitis C patients

Researchers found that eltrombopag boosted platelet counts in a majority of patients with low platelet counts and cirrhosis due to HCV infection, allowing most to continue or start conventional antiviral treatment. The study's results are an important development for people infected with the hepatitis C virus worldwide.

SourceDuke University Medical Center·JournalNew England Journal of Medicine·DateNov 28, 2007

Drinking and smoking don't boost HPV-related cancer risk

New study reveals that alcohol and tobacco use do not increase the risk of head and neck cancers in people infected with HPV16, a common strain of the sexually-transmitted virus. The findings suggest two distinct causes for these major cancers, requiring different prevention and treatment strategies.

SourceBrown University·JournalJNCI Journal of the National Cancer Institute·DateNov 27, 2007

Other Highlights in the Nov. 27 JNCI

Male BRCA1 and BRCA2 mutation carriers have a higher risk of developing breast cancer compared to noncarriers. A high carbohydrate diet may also promote prostate tumor growth in mice, while infection with human papillomavirus (HPV) is associated with an increased risk of head and neck cancers but does not further increase the risk when...

SourceJournal of the National Cancer Institute·JournalJNCI Journal of the National Cancer Institute·DateNov 27, 2007