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2010•European PsychiatryOpen access

P03-293 - Alcohol And Aldehyde Dehydrogenase Polymorphisms And Risk For Suicide

Akitoyo Hishimoto, Kentaro Mouri, Masaaki Fukutake, Kyoichi Shiroiwa

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Abstract

Excessive alcohol consumption plays a crucial role in the pathogenesis of suicide. Because certain functional alleles of alcohol dehydrogenase (ADH1B) and mitochondrial aldehyde dehydrogenase (ALDH2) genes affect alcohol consumption, we explored associations of the ADH1B and ALDH2 genetic variants with suicide in 317 Japanese males. We found the active ALDH2 allele was significantly more frequent in the completed suicides. Individuals bearing alcoholism-susceptible homozygotes at both loci have 6 times greater risk for suicide. Our data show the genetic impact of the two polymorphisms on suicidal behaviour and presence of the active ALDH2 allele may increase the risk for suicide.

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Excessive alcohol consumption plays a crucial role in the pathogenesis of suicide. Because certain functional alleles of alcohol dehydrogenase (ADH1B) and mitochondrial aldehyde dehydrogenase (ALDH2) genes affect alcohol consumption, we explored associations of the ADH1B and ALDH2 genetic variants with suicide in 317 Japanese males. We found the active ALDH2 allele was significantly more frequent in the completed suicides. Individuals bearing alcoholism-susceptible homozygotes at both loci have 6 times greater risk for suicide. Our data show the genetic impact of the two polymorphisms on suicidal behaviour and presence of the active ALDH2 allele may increase the risk for suicide.

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Available abstract

Excessive alcohol consumption plays a crucial role in the pathogenesis of suicide. Because certain functional alleles of alcohol dehydrogenase (ADH1B) and mitochondrial aldehyde dehydrogenase (ALDH2) genes affect alcohol consumption, we explored associations of the ADH1B and ALDH2 genetic variants with suicide in 317 Japanese males. We found the active ALDH2 allele was significantly more frequent in the completed suicides. Individuals bearing alcoholism-susceptible homozygotes at both loci have 6 times greater risk for suicide. Our data show the genetic impact of the two polymorphisms on suicidal behaviour and presence of the active ALDH2 allele may increase the risk for suicide.

Key concepts: ALDH2, ADH1B, Aldehyde dehydrogenase, Allele, Alcohol dehydrogenase, Alcohol consumption, Genetics, Medicine

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