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Genetic differences in ethanol metabolizing enzymes and blood pressure in Japanese alcohol consumers

Journal of Human Hypertension volume 16, pages 479–486 (2002)Cite this article

Abstract

Orientals have unique genetic polymorphisms in ethanol metabolizing enzymes, such as alcohol dehydrogenase-2 (ADH2), aldehyde dehydrogenase-2 (ALDH2) and cytochrome P450–2E1 (CYP2E1). Of the three studies conducted to clarify the influence of ALDH2 genotypes on sensitivity to the pressor effects of alcohol in Japanese, only one was suggested, though indirectly, higher sensitivity in drinkers having the genotype of inactive ALDH2. This discrepancy prompted us to determine ADH2, ALDH2 and CYP2E1 genotypes in the genomic DNA extracted from white blood cells of 855 healthy middle-aged Japanese men, and to analyse the associations with the alcohol-blood pressure (BP) relationship. No marked differences were found in the relationship among the genotypes of ALDH2, although the subjects with intact ALDH2 showed a slightly higher BP than those with inactive ALDH2 probably due to under-reporting of alcohol consumption in those with intact ALDH2 who could thus drink more. No significant influence of ADH2 genotypes was observed. A higher BP was noted in large volume alcohol consumers having c2/c2 genotype of CYP2E1. Multivariate regression analysis adjusting for the effects of age, body mass index and the volume of alcohol consumed, all of which are strong determinants of BP levels, showed only a marginal effect of c2 allele of CYP2E1 on diastolic BP elevations with increases in alcohol consumption. Thus it is concluded that the genetic polymorphisms in ethanol-metabolizing enzymes do not greatly influence the alcohol-BP relationship in Japanese men.

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Acknowledgements

This study was supported by a grant from the Research Project Fund of Kanazawa Medical University (P99–4).

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  1. Department of Hygiene, Kanazawa Medical University, 1–1 Daigaku, Uchinada, Ishikawa, 920–0293, Japan

    Y Yamada, F Sun, I Tsuritani & R Honda

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  1. Y Yamada
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  2. F Sun
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  3. I Tsuritani
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  4. R Honda
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Correspondence to Y Yamada.

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Yamada, Y., Sun, F., Tsuritani, I. et al. Genetic differences in ethanol metabolizing enzymes and blood pressure in Japanese alcohol consumers. J Hum Hypertens 16, 479–486 (2002). https://doi.org/10.1038/sj.jhh.1001415

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  • DOI: https://doi.org/10.1038/sj.jhh.1001415

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