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  1. Lack of association of cytochrome P450 2e1 genetic polymorphisms with the risk of human hepatocellular carcinoma.

    Article - En anglais

    The iso-enzyme pattern of cytochrome P450 was shown to be related to the development of chemically induced hepatocellular carcinoma (HCC) in rats, which is accelerated by chronic alcohol ingestion.

    Our study was designed to investigate the association of cytochrome P450 2EI (CYP2EI) genetic polymorphisms with the susceptibility to HCC in humans with and without chronic alcohol ingestion.

    We enrolled 171 male patients (108 Korean and 63 Japanese) with HCC and 31 age-and sex-matched healthy Korean subjects with no evidence of liver disease or cancer in any organ.

    Genotypes in the 5'-flanking region of the CYP2EI gene were determined by restriction fragment length polymorphisms using 2 endonucleases : Pst I and Rsa I. Allelic frequencies in the CYP2EI 5'-flanking region in the Korean control population were 83.5% and 16.5% for allele c1 and c2, respectively.

    The frequencies of genotypes with the c2 allele (c1/c2 and c2/c2) were compared with those of genotypes without c2 (c1/c1) among HCC patients and controls, according to the pattern of alcohol consumption.

    There was no significant association between HCC risk and genotypes c1/c2 and c2/c2 either in all HCC patients or in HCC patients of different ethnic groups.

    Habitual drinkers with HCC, especially among Koreans, were more likely to carry genotype c1/c2 and c2/c2 (odds ratio=3.0) than non-habitual drinkers (odds ratio=1.2) ; however, the difference was not statistically significant. (...)

    Mots-clés Pascal : Carcinome hépatocellulaire, Cytochrome P450, Isozyme, Variabilité génétique, Facteur risque, Epidémiologie, Corée du Sud, Corée, Asie, Japon, Homme, Appareil digestif pathologie, Foie pathologie, Tumeur maligne

    Mots-clés Pascal anglais : Hepatocellular carcinoma, Cytochrome P450, Isozyme, Genetic variability, Risk factor, Epidemiology, South Korea, Korea, Asia, Japan, Human, Digestive diseases, Hepatic disease, Malignant tumor

    Logo du centre Notice produite par :
    Inist-CNRS - Institut de l'Information Scientifique et Technique

    Cote : 97-0331429

    Code Inist : 002B13C01. Création : 12/09/1997.