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Science News for February 9, 2007


First-degree fetal heart block may be reversible

Researchers at Yale University discovered a potential reversible cause of first-degree fetal heart block, which impairs the heart's electrical signaling. The PRIDE study found that early treatment with dexamethasone can reverse the condition, but it can progress rapidly to irreversible third-degree block.

Folate and B12 may influence cognition in seniors

A new study from Tufts University found that high folate status and adequate vitamin B12 levels are associated with better cognitive function in seniors. Low vitamin B12 status was linked to increased cognitive impairment, while high serum folate was more detrimental when combined with low vitamin B12.

SourceTufts University·JournalAmerican Journal of Clinical Nutrition·DateFeb 9, 2007

Update on Tufts vitamin K research

Researchers at Tufts University have found that while older adults consume more vitamin K than younger adults, many still do not meet the recommended intake. High phylloquinone intake may be associated with better dietary habits and reduced risk of cardiovascular disease, but further research is needed.

SourceTufts University·JournalCurrent Opinion in Clinical Nutrition & Metabolic Care·DateFeb 9, 2007

Supernovae -- cosmic lighthouses

Researchers have discovered that all Type Ia supernovae explode with the same mass and energy, making them useful for measuring distances. The brightness of supernovae depends on the amount of nickel they contain, allowing for more accurate calibration and future distance measurements.

SourceMax-Planck-Gesellschaft·JournalScience·DateFeb 9, 2007

Benchmark fetal surgery study finds timeliness to be critical factor in success of treatment

A new benchmark study finds that timeliness is a critical factor in the success of treatment for twin-twin transfusion syndrome (TTTS). The study, led by Dr. Timothy Crombleholme, highlights the importance of early diagnosis and aggressive intervention to improve survival rates. Fetal echocardiography is recommended as a crucial diagno...