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Science News Archive May 2011 - Page 17


Page 17 of 28

Salinity in Outer Banks wells traced to fossil seawater

Researchers at Duke University have traced rising salinity levels in the Yorktown aquifer to ancient fossil seawater, providing a long-term solution for desalinated tap water. The study found that reverse osmosis membranes can still effectively remove most dissolved salts, but may require additional treatment for boron and arsenic.

SourceDuke University·JournalHydrogeology Journal·DateMay 12, 2011

Eucalyptus tree genome deciphered

The Eucalyptus grandis genome sequence provides a blueprint for efficient breeding programs, disease resistance, and wood quality improvement. Researchers aim to replace fossil fuels with biofuels and other alternative energy sources using cellulose-rich plants like eucalyptus trees.

Evolutionary conservation of fat metabolism pathways

A study by Salk Institute scientists reveals that insulin activates a factor called SIK3, which promotes lipid storage during daytime feeding hours by blocking fat breakdown programs. This link between glucose metabolism and lipid storage has potential applications in treating metabolic conditions such as obesity and type II diabetes.

SourceSalk Institute·JournalCell·DateMay 12, 2011

Toward a vaccine for methamphetamine abuse

Three new vaccine formulations show potential in preventing long-term relapse and reducing costs associated with methamphetamine addiction. The formulations produce a good immune response in mice, offering a unique approach to treating the highly addictive substance.

SourceAmerican Chemical Society·JournalJournal of the American Chemical Society·DateMay 11, 2011

Blood pressure drug shows some muscle

Researchers discovered losartan improves muscle regeneration and prevents wasting away from inactivity in geriatric mice. The study suggests losartan may have broader clinical applications in protecting against immobilization atrophy in older adults.

SourceJohns Hopkins Medicine·JournalScience Translational Medicine·DateMay 11, 2011

Serendipity leads to lifesaving discovery

A McGill research team identified two distinct disease-causing mutations in the IRF8 gene, which causes severe immunodeficiency and disseminated BCG infection. These findings led to a successful stem cell transplant that saved the life of a three-month-old baby girl.

SourceMcGill University·JournalNew England Journal of Medicine·DateMay 11, 2011

Beware of predatory male black bears

Research reveals that lone male black bears are the primary cause of fatal attacks on humans, with a significant increase in attacks linked to human population growth. The study also found that familiarization with humans and previous bear encounters do not necessarily lead to increased attack rates.

SourceUniversity of Calgary·JournalJournal of Wildlife Management·DateMay 11, 2011