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Science News Archive November 2008 - Page 9


Page 9 of 20

Gaps in adhesion

Scientists have reproduced the protein responsible for mussel adhesion in a synthetic material, showing that adhesion is independent of link number. The findings could lead to manufacturing polymers with binding sites for different materials.

SourceMax-Planck-Gesellschaft·JournalAdvanced Materials·DateNov 17, 2008

'Orphan' genes play an important role in evolution

A team of scientists discovered that novel genes are responsible for morphological differences between two closely related species of freshwater polyps called Hydra. The study found that a secreted protein encoded by one such gene controls the pattern in which the tentacles develop, leading to species-specific traits.

SourcePLOS·JournalPLOS Biology·DateNov 17, 2008

Acinetobacter baumannii -- dangerously increasing its profile as a health-care-associated infection

The Lancet Infectious Diseases review highlights the growing concern of Acinetobacter baumannii infections, which can be caused by environmental exposure, skin colonization, or hospital-acquired conditions. Researchers emphasize the need for strict hygiene compliance and further research on antibiotic treatment options to prevent major...

SourceThe Lancet_DELETED·JournalThe Lancet Infectious Diseases·DateNov 17, 2008

'Let the sunshine in' to protect your heart this winter

A new review article in Circulation highlights the link between vitamin D deficiency and heart disease, with rates of severe disease or death potentially 30-50% higher among sun-deprived individuals. Treatment options such as vitamin D supplements may help decrease the risk of cardiovascular disorders.

SourceLoyola Medicine·JournalCirculation·DateNov 17, 2008

Scientists self-censor in response to political controversy

A survey of researchers found that many engaged in self-censorship after public debate about NIH grant funding, removing politically sensitive language and stopping certain topics. The study also showed that some researchers strengthened their commitment to complete their research despite controversy.

SourcePLOS·JournalPLOS Medicine·DateNov 17, 2008

Pain and itch responses regulated separately

Scientists have determined that pain and itch are regulated by different molecular mechanisms. Researchers at WashU Medicine separated itch and pain sensations in mice, a finding that could have important implications for treating both pain and chronic itching. GRPR gene plays key role in transmitting itching sensations.

Embargoed news from Annals of Internal Medicine

A new ACP clinical practice guideline states that second-generation antidepressants are equally effective in treating depression but have different adverse effects. The guideline recommends assessing patient status and modifying treatment if necessary, to maximize therapeutic response while minimizing side effects.

SourceAmerican College of Physicians·JournalAnnals of Internal Medicine·DateNov 17, 2008

Forests may play overlooked role in regulating climate

Scientists at the University of New Hampshire have discovered a link between forest foliage nitrogen levels and canopy albedo, which could influence climate change predictions. The study suggests that trees with high foliar nitrogen have a two-fold effect on climate by absorbing more CO2 and reflecting more solar radiation.

SourceUniversity of New Hampshire·JournalProceedings of the National Academy of Sciences·DateNov 17, 2008

Indigo ointment may help treat patients with psoriasis

A randomized trial found that indigo naturalis ointment significantly improved scaling, erythema, and induration in patients with treatment-resistant psoriasis. After 12 weeks, the treated plaques showed an 81% improvement compared to a 26% improvement for non-medicated ointment-treated lesions.

SourceJAMA Network·JournalArchives of Dermatology·DateNov 17, 2008