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Science News for April 21, 2008


Vitamin D in brain function

Scientists at Children's Hospital & Research Center Oakland conclude that vitamin D plays an important role in brain development and function. While the exact effects on behavior remain unclear, evidence suggests a beneficial role for vitamin D in protecting against autoimmune diseases and some forms of cancer.

SourceChildren's Hospital & Research Center Oakland·JournalThe FASEB Journal·DateApr 21, 2008

Pathogen virulence proteins suppress plant immunity

A study by VBI Professor Brett Tyler and colleagues reveals that the Avr1b virulence protein in Phytophthora sojae suppresses programmed cell death in plants, disabling their immune systems. This finding has significant implications for understanding plant-pathogen interactions and developing effective disease management strategies.

SourceVirginia Tech·JournalProceedings of the National Academy of Sciences·DateApr 21, 2008

How much progress has there been in vaccinating against Hib in the Americas?

By the end of 2006, all countries in the Americas had included Hib vaccine in their immunization schedule. However, efforts are still needed to strengthen invasive bacterial disease surveillance and improve vaccination coverage. The successful introduction of Hib and pneumococcal vaccines could reduce global severe pneumonia burden by ...

SourcePLOS·JournalPLOS Medicine·DateApr 21, 2008

Nasal surgery associated with improvements in quality of life for those with sleep apnea

For patients with obstructive sleep apnea and nasal blockages, nasal surgery is associated with significant improvements in symptoms and quality of life. The procedure led to notable reductions in snoring, daytime sleepiness, and overall health status, particularly in reducing role limitations caused by physical or emotional problems.

SourceJAMA Network·JournalArchives of Otolaryngology - Head and Neck Surgery·DateApr 21, 2008

Biology of Reproduction highlights

Recent studies in Biology of Reproduction suggest that maternal follicular testosterone influences the sex of bovine embryos, while research on maternal cell microchimerism reveals its presence in major organs of healthy newborn mice. These findings highlight the importance of understanding the mechanisms behind these phenomena.

SourceSociety for the Study of Reproduction·JournalBiology of Reproduction·DateApr 21, 2008

US sees decline in number of general surgeons

The number of general surgeons per 100,000 Americans has declined by over 25% since 1981, mainly due to an aging population and a lack of rural training opportunities. Rural areas are disproportionately affected, with urban areas experiencing a slightly greater decline.

SourceJAMA Network·JournalArchives of Surgery·DateApr 21, 2008