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Wednesday, May 28, 2008

News Release - NEW STUDY REVEALS BRAIN CELL MECHANISM OF ALCOHOL DEPENDENCE

05/27/2008

Findings support new possible treatment for alcohol abuse

Washington, DC May 27, 2008– A study released today reveals a cellular mechanism involved in alcohol dependence. The study, in the May 28 issue of The Journal of Neuroscience, shows that gabapentin, a drug used to treat chronic pain and epilepsy, reduces alcohol intake in alcohol-dependent rats by normalizing chemical communication between neurons, which is altered by chronic alcohol abuse.

The central amygdala, a part of the brain involved in emotions such as stress and fear, is important in regulating alcohol consumption. Most central amygdala neurons communicate via a chemical signal known as GABA, which is an inhibitory neurotransmitter. Alcohol dependence has been associated with the strengthening of inhibitory synapses in this brain region.

Gabapentin (known commercially as Neurontin) is structurally similar to GABA and increases GABA neurotransmission. In alcoholics, gabapentin has been shown to effectively treat alcohol withdrawal and reduce alcohol consumption and cravings following detoxification. However, how gabapentin acts in the brain to combat alcohol dependence has been unclear.
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