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Genetic and environmental factors associated with plasma paraoxonase activity in healthy Chinese

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To characterize factors associated with plasma paraoxonase 1 (PON1) activity in healthy Chinese Han population, we carried out the present study, not only taking into account the total set of frequent polymorphisms present in PON1 gene in the Chinese Han population, but also some environmental factors. The -107T/C polymorphism as well as drinking and smoking were independently associated with plasma PON1 activity, determined by rates of phenylacetate hydrolysis. The -107T/C polymorphism had the predominant effect and accounted for 16% of the observed variability in plasma PON1 activity. Alcohol consumption can modulate the effects of cigarette smoking on PON1 activity, and smoking only decreases PON1 activity in non-drinkers. The increase of PON1 activity by drinking or the inhibition of PON1 activity by smoking varies according to PON1 -107T/C genotypes, and the associations were only observed in -107T allele carriers. The results illustrate the complexity of polymorphism-phenotype associations. The observed interactions constitute concrete examples of gene-environment and environment-environment interactions.
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Document Type: Research Article

Affiliations: Division of Population Genetics, Cardiovascular Institute and Fu Wai Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100037, China

Publication date: March 1, 2004

More about this publication?
  • The International Journal of Molecular Medicine is a monthly, peer-reviewed journal devoted to the publication of high quality studies related to the molecular mechanisms of human disease. The journal welcomes research on all aspects of molecular and clinical research, ranging from biochemistry to immunology, pathology, genetics, human genomics, microbiology, molecular pathogenesis, molecular cardiology, molecular surgery and molecular psychology.

    The International Journal of Molecular Medicine aims to provide an insight for researchers within the community in regard to developing molecular tools and identifying molecular targets for the diagnosis and treatment of a diverse number of human diseases.
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