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Treatment for alcohol dependence might work best in certain populations, research suggests
Date:3/16/2011

This release is available in French.

MONTREAL March 16, 2011 - Results from a new study suggest that one of the most prescribed medications for alcohol dependence may be more effective in some people. Preliminary results show that naltrexone (Revia), one of the only medications approved for treating people with alcohol abuse problems, may only be effective in women and those with a specific genetic variation. The new study, conducted by researchers from the Research Institute of the McGill University Health Centre (RI MUHC) and McGill University, will be published in the journal Alcoholism: Clinical and Experimental Research.

Previous work suggested that naltrexone only helped some people with alcohol problems, but the reason for that was unclear. "Our results suggest that we might now be able to predict beforehand who will benefit most," says Dr. Marco Leyton, lead investigator of the study and a researcher in the Mental Illnesses and Addiction axis at the RI MUHC. "We were quite excited to find that our results supported that naltrexone was specifically effective in women and in people who carried a gene related to the brain's natural morphine system called the mu opioid receptor gene (OPRM1)."

In this study, researchers followed a small group of "social drinkers" in an effort to validate some very preliminary hints that the efficacy of the treatment might be related to gender and a particular gene that may be inherited. These findings could help ensure that we give the right medication to the right people," says Dr. Leyton, who is also and associate professor in the Department of Psychiatry at McGill.

Researchers and clinicians might be able to determine who might best respond to this treatment, before it was administrated. "If a particular individual with alcohol dependence had these features, we could then say with mu
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Contact: Julie Robert
julie.robert@muhc.mcgill.ca
514-843-1696
McGill University Health Centre
Source:Eurekalert

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