PMID: 11918988Mar 29, 2002Paper

D(2) dopamine receptor (DRD2) polymorphism is associated with severity of alcohol dependence

European Psychiatry : the Journal of the Association of European Psychiatrists
J P ConnorE P Noble

Abstract

The A(1) allele of the D(2) dopamine receptor (DRD2) gene has been associated with alcohol dependence. However, the expression of this allele risk on the severity of drinking behavior in patients with alcohol dependence has not been systematically explored. The present study examines the association between DRD2 A(1)(+) (A(1)/A(1) and A(1)/A(2) genotypes) and A(1)- (A(2)/A(2) genotype) allele status and key drinking parameters in alcohol-dependent patients. A sample of Caucasian adults was recruited from an alcohol detoxification unit. A clinical interview and the Alcohol Dependence Scale (ADS) questionnaire provided data on consumption, dependence, chronology of drinking and prior detoxification. A(1)(+) allele compared to A(1)- allele patients consumed higher quantities of alcohol, commenced problem drinking at an earlier age, experienced a shorter latency between first introduction to alcohol to the onset of problem drinking and had higher ADS scores. Moreover, A(1)(+) allele patients had more detoxification attempts than their A(1)- allele counterparts. In sum, alcohol-dependent patients with the DRD2 A(1) allele compared to patients without this allele are characterized by greater severity of their disorder across a range ...Continue Reading

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Citations

Sep 18, 2007·Neuropsychology Review·Marlene Oscar-Berman, Ksenija Marinković
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