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Science News for March 7, 2010


A high-tech handrest

University of Utah engineers created a computer-controlled hand and arm support to aid precision tasks with less fatigue. The Active Handrest allows users to maintain control while sensing tool position or force, increasing precision in tasks like surgery, painting, and electronics repair.

Repeated anesthesia can affect childrens ability to learn

A study published in the Journal of Cerebral Blood Flow & Metabolism found that repeated anesthesia can cause a significant decrease in stem cells in the hippocampus, leading to impaired memory and learning in young animals. The researchers believe this effect may be age-related, with younger animals being more susceptible.

SourceUniversity of Gothenburg·JournalJournal of Cerebral Blood Flow & Metabolism·DateMar 7, 2010

Women's group support can improve birth outcomes

Research findings suggest that participatory women's groups can reduce neonatal mortality by up to one-third and moderate maternal depression. The groups' impact was attributed to improved hygiene and care practices, as well as increased community mobilization and support for the poorest populations.

SourceThe Lancet_DELETED·JournalThe Lancet·DateMar 7, 2010

How to fortify the immunity of HIV patients

Researchers at Universite de Montreal and VGTI have discovered a new mechanism by which HIV infects immune cells, characterizing the role of two molecules PD-1 and IL-10 in this process. The study suggests that blocking these interactions may restore the immune response in HIV-infected patients.

SourceUniversity of Montreal·JournalNature Medicine·DateMar 7, 2010

Vitamin D crucial to activating immune defenses

Scientists have discovered that Vitamin D is essential for activating killer cells in the immune system. Without sufficient vitamin D, T cells cannot detect and fight off serious infections. The researchers found that T cells rely on vitamin D to activate and that a lack of vitamin D can lead to immune suppression.

SourceUniversity of Copenhagen·JournalNature Immunology·DateMar 7, 2010

Snake venom charms science world

A novel protein named haditoxin has been identified in King Cobra venom, showing promise for new drug discovery and advancing our understanding of disease mechanisms. The protein's unique structure suggests it may offer insights into treating various neurological disorders.

SourceResearch Australia·JournalJournal of Biological Chemistry·DateMar 7, 2010