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Science News for September 16, 2009


Scientists cure color blindness in monkeys

Researchers from the University of Florida and the University of Washington successfully used gene therapy to restore color vision in two squirrel monkeys. The study demonstrates the potential for this treatment to target adult vision disorders involving cone cells, a crucial step towards developing therapies for human cone diseases.

SourceUniversity of Florida·JournalNature·DateSep 16, 2009

Melting of the Greenland ice sheet mapped

Researchers have analyzed ice cores from Greenland and small ice caps to show the evolution of the ice sheet over 11,700 years. The findings reveal that changes in elevation cause different temperatures, allowing scientists to use small ice caps as a standard reference for climate history.

SourceUniversity of Copenhagen·JournalNature·DateSep 16, 2009

Rich people don't need friends

A study published in Psychological Science found that reminders of money can reduce feelings of pain and social exclusion. The researchers suggest that acquired symbolic value of money can influence responses to both emotional and physical pain.

SourceFaculty of 1000·JournalPsychological Science·DateSep 16, 2009

Intermittent preventive malaria treatment for African infants is safe and effective, but more long-acting drugs desperately needed

A recent study found that intermittent preventive malaria treatment in African infants is both safe and effective, with sulfadoxine-pyrimethamine providing protection for up to 6 weeks. However, the use of this drug is limited by potential resistance and its risks. New long-acting antimalarial drugs are urgently needed for this strategy.

SourceThe Lancet_DELETED·JournalThe Lancet·DateSep 16, 2009

Canadian scientists uncover a new mechanism regulating fetal growth and neonatal survival

Researchers have identified a critical role for protein kinase Erk3 in fetal growth potential and lung maturation, revealing the loss of this function leads to fetal growth restriction and early neonatal lethality. This finding provides new insights into intrauterine growth restriction and its associated risks.

SourceUniversity of Montreal·JournalProceedings of the National Academy of Sciences·DateSep 16, 2009

GPs' gut feelings defined

Researchers define 'gut feelings' experienced by GPs as two types: sense of alarm and reassurance. The former involves feeling uneasy about possible adverse outcomes, while the latter means feeling secure despite uncertainty. This definition aims to facilitate future research on the effectiveness of 'gut-compass'.

SourceBMC (BioMed Central)·JournalBMC Family Practice·DateSep 16, 2009

What are the risk factors for rebleeding after negative angiography?

A study published in the World Journal of Gastroenterology found that underlying malignancy, liver cirrhosis, and hematemesis are key predictors of rebleeding after negative angiographic findings. The research team analyzed 128 patients with acute non-variceal gastrointestinal bleeding who had negative initial angiography results.

SourceWorld Journal of Gastroenterology·JournalWorld Journal of Gastroenterology·DateSep 16, 2009

Depression care improved

Researchers found a simple intervention involving monthly follow-up phone calls improved depression care in primary practice. The trial evaluated 626 patients with depression, highlighting the potential of practice-based health care assistants to recognize and react to deteriorating symptoms.

SourceGoethe University Frankfurt·JournalAnnals of Internal Medicine·DateSep 16, 2009

Spelling B-Y-U with DNA

Researchers have created a new technology using DNA origami that can form tiny letters with multiple branching points, addressing the need for narrow features in nanoelectronics. The breakthrough could lead to the development of nanoscale devices with unprecedented capabilities.

SourceAmerican Chemical Society·JournalNano Letters·DateSep 16, 2009

How to spell B-Y-U with DNA

Researchers from Brigham Young University have successfully created a customized DNA origami technique to write the letters B-Y-U on an extremely small scale. This breakthrough enables the design of nanoscale shapes for electrical circuitry and the creation of inexpensive computer chips.

SourceBrigham Young University·JournalNano Letters·DateSep 16, 2009