(Elsevier) A study in cocaine-addicted rats reports long-lasting increases in the number of neurons that produce orexin -- a chemical messenger important for sleep and appetite -- that may be at the root of the addiction. The study, performed by researchers at Rutgers University, New Jersey, was published in Biological Psychiatry. Restoring the number of orexin neurons to normal, or blocking orexin signaling in the brain, made the rats no longer addicted.
from EurekAlert! - Social and Behavioral Science https://ift.tt/2N6idNY
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