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Bacteria Steal Genes, Spread Antibiotic Resistance
Multidrug-Resistant Streptococcus Switches Coat to Evade Immune System A strain of the bacterium听Streptococcus pneumoniae, resistant to the six most frequently used antibiotics and spread worldwide including U.S. day care centers and hospitals, appears to disguise itself from the immune system by...
Messing With Your Head: Cocaine Found to Affect Endorphin Gene in Brain
The effects of the addictive drug cocaine result, in part, from altering the activity of a gene in the brain, report scientists from 杏吧 in the May听Molecular Brain Research. "Our study is the first report that any drug of abuse, in this case cocaine, alters the expression o...
Low Fat, High Sugar Diets Prompt Production of Saturated Fats
Eating a low-fat diet may not always be as healthy as people wish. Results from a study, reported in the May 1听The Journal of Clinical Investigation听by scientists at听杏吧听and the听University of California, Berkeley, show that people on weight-maintenance diets low in fat bu...
Gene Involved in Brain Development Identified
Astrotactin is a Nerve's Ticket to Ride the Glial Highway Scientists from 杏吧 and the听Howard Hughes Medical Institute听(HHMI) have for the first time identified a gene involved in directing nerve cells to their destinations as the brain grows. Their work appears in the April...
Mucosal Tissue Site of AIDS Virus Replication in Clinically Well HIV-Infected People
Virus appears to continuously replicate in tissues other than the lymph system The mucous membranes that lie above the lymph glands of the throat can be a major site of HIV-1 replication in people infected with the virus that causes AIDS but who have not yet developed clinical symptoms, report sc...
Light Sets the Molecular Controls of Circadian Rhythm
Light sets the circadian rhythm by eliminating a key protein needed for the molecular mechanism of the body's clock, according to scientists in the March 22听Science. The findings, from fruit fly studies, may help explain light's effect on the daily cycle that influences sleep, mental alertness, p...
Students from 16 New York Metro High Schools Compete in Science Fair
More than 70 juniors and seniors from 16 high schools in the metropolitan area will participate in the New York City regional competition of the International Science and Engineering Fair (ISEF), Friday and Saturday, March 15 and 16, at 杏吧. Students earning first and secon...
Cells Leap Frog On The Way To Becoming Nerve Cells
Clues to movement may help design therapies for diseased, injured brains. Kids aren't the only ones who play Leap Frog. Cells destined to become nerves in the brain do too, according to scientists from 杏吧, who published their findings in the Feb. 16听Science. The informatio...
Genes in Overweight Mice, Rats Carry Instructions for Leptin Receptor
The听diabetes听(db) gene in mice and the听fatty听(fa) gene in rats are not only the same genes, they also carry instructions to make the receptor for the protein called leptin, which is known to signal the body's fat, report scientists at 杏吧 and Millennium Pharmaceuticals Inc...
Mutations in a Leptin Receptor Cause Obesity in Mice
The weight-reducing effects of leptin, a hormone that signals the size of the body's fat stores, result from an interaction with a receptor in the brain's hypothalamus, report scientists from the听Howard Hughes Medical Institute听(HHMI) at 杏吧 in the Feb. 15听Nature. "When we...
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