Brightsurf Science News & Current Events

December 26, 2005
A new window into structural plasticity in the adult visual cortex
Chronic in vivo imaging of fluorescent-labeled neurons in adult mice reveals extension and retraction of dendrites in GABAergic non-pyramidal interneurons of the cerebral cortex, according to a paper published in the open access journal PLoS Biology.

MIT researcher finds neuron growth in adult brain
Despite the prevailing belief that adult brain cells don't grow, a researcher at MIT's Picower Institute for Learning and Memory reports in the Dec.

NIAID researchers show how promising TB drug works
Scientists from the National Institute of Allergy and Infectious Diseases (NIAID), part of the National Institutes of Health, have determined how a promising drug candidate attacks the bacterium that causes tuberculosis (TB).

Fish evolve a longer lifespan by evolving a longer reproductive period, researchers find
A research team led by David Reznick, a professor of biology at UC Riverside, has found that as some populations of an organism evolve a longer lifespan, they do so by increasing only that segment of the lifespan that contributes to

Getting an evolutionary handle on life after reproduction
An analysis of the causes of variation in post-reproductive lifespan reveals that fish senesce and that the evolution of lifespan in guppies is due to selection during their reproductive stage, published in the open access journal PLoS Biology.

Cervical cancer screening failure linked to poverty
African-American women living in communities with high poverty rates are less likely to be screened for cervical cancer, even after adjusting for other factors known to raise the risk of non-screening, such as older age, lower educational attainment, and smoking.

Gene therapy for muscular dystrophy fixes frail muscle cells in animal model, Stanford study finds
A new gene therapy technique that has shown promise in skin disease and hemophilia might one day be useful for treating muscular dystrophy, according to a new study by researchers at Stanford University School of Medicine.

After gastric bypass surgery, important to check vitamin B1 deficiency
A deficiency in vitamin B1 can be a serious complication following a popular surgery to treat obesity, according to a case study published in the December 27, 2005 issue of Neurology, the scientific journal of the American Academy of Neurology.

Childhood infections stunt growth, shorten life
Based on analysis of public health records of 18th and 19th century Europeans, USC gerontologists propose that high rates of childhood infection compromise lifespan and height even in healthy survivors.
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