segunda-feira, outubro 17, 2005
Rasta Kinder: A scientific approach
A synthetic chemical similar to the active ingredient in marijuana makes new cells grow in rat brains. What is more, in rats this cell growth appears to be linked with reducing anxiety and depression. The results suggest that marijuana, or its derivatives, could actually be good for the brain… Xia Zhang of the University of Saskatchewan in Saskatoon, Canada, and colleagues decided to see what effects a synthetic cannabinoid called HU210 had on rats' brains. They found that giving rats high doses of HU210 twice a day for 10 days increased the rate of nerve cell formation, or neurogenesis, in the hippocampus by about 40%... When the rats who had received the cannabinoid were placed under stress, they showed fewer signs of anxiety and depression than rats that had not had the treatment. When neurogenesis was halted in these rats using X-rays, this effect disappeared, indicating that the new cell growth might be responsible for the behavioral changes. Kurt Kleiner NewScientist.com Journal reference: Journal of Clinical Investigation (DOI:10.1172/JCI25509)
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