Influence ofADH1B polymorphism on alcohol use and its subjective effects in a Jewish population

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Abstract
Class I alcohol dehydrogenases (ADHs) are the principal enzymes responsible for ethanol metabolism in humans. Genetic polymorphism at the ADH1B locus (old nomenclature ADH2) results in isozymes with quite different catalytic properties. The frequency of the ADH1B*2 allele varies among ethnic groups. ADH1B*2 is most often observed in Asian populations, and has been shown to be protective against alcoholism. The Jewish population has a higher frequency of the ADH1B*2 allele and lower rates of alcohol-related problems as compared to other Caucasian populations. Thus, it would be of interest to determine whether the ADH1B*2 allele is associated with alcohol consumption and its subjective effects in this group. Four groups of Jewish subjects (male and female college-age samples, and male and female general samples) were recruited from the same region of the United States. All subjects completed a questionnaire to delineate alcohol consumption and its subjective consequences. Genotype at the ADH1B locus was determined for each participant. ADH1B*2 allele frequencies were similar for the Jewish college-age and general population samples. Men in both the college-age and general population in the ADH1B*2 group reported more unpleasant reactions following alcohol consumption than men in the ADH1B*1 group. Men in the general population in the ADH1B*2 group drank alcohol less frequently than men who were homozygous ADH1B*1; there was a similar trend among the women. The ADH1B polymorphism is associated with unpleasant reactions after alcohol consumption, and frequency of alcohol consumption in these Jewish samples.

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