title: [Correlation of prostate cancer susceptibility with genetic polymorphism of cytochrome P450 2E1, smoking and drinking: a case-control study in the population of Nanjing area].
abstract: OBJECTIVE
  To investigate the association of the risk of prostate cancer (PCa) with the polymorphism of the CYP2E1 gene, smoking and drinking, and to explore the joint role of genes and living habits in PCa pathogenesis.
  
  
  METHODS
  We conducted a case-control study on 109 PCa patients and 202 age-matched non-PCa male controls, and detected the polymorphisms of CYP2E1 Rsa I and Pst I sites by PCR-RFLP using DNA from peripheral blood lymphocytes.
  
  
  RESULTS
  The history of deep smoking (OR = 2.29, 95% CI: 1.28 - 4.09) or heavy smoking (OR = 1.81, 95% CI: 1.02 - 3.22) was a risk factor. The CYP2E1 C1/C1 genotype significantly increased the risk of PCa (OR = 1.71, 95% CI: 1.04 - 2.82) and apparently interacted with drinking (OR = 2.21, 95% CI: 1.06 - 4.59). Heavy smokers with the C1/C1 genotype showed an increased risk of PCa (OR = 2.80, 95% CI: 1.20 - 6.56), as compared with non-smokers carrying the genotype of C1/C2 or C2/C2.
  
  
  CONCLUSIONS
  The risk of PCa obviously increases in individuals with both the CYP2E1 C1/C1 genotype and the habit of smoking or drinking, and it has a significant positive correlation with the dose of tobacco exposure.
authors.affiliation: Department of Urology, The First Affiliated Hospital of Nanjing Medical University, Nanjing, Jiangsu 210029, China.
authors.forename: Jie
authors.initials: J
authors.lastname: Yang
authors.forename: Min
authors.initials: M
authors.lastname: Gu
authors.forename: Ning-Hong
authors.initials: NH
authors.lastname: Song
authors.forename: Ning-Han
authors.initials: NH
authors.lastname: Feng
authors.forename: Li-Xin
authors.initials: LX
authors.lastname: Hua
authors.forename: Xiao-Bing
authors.initials: XB
authors.lastname: Ju
authors.forename: Yuan-Geng
authors.initials: YG
authors.lastname: Sui
authors.forename: Xin-Ru
authors.initials: XR
authors.lastname: Wang
authors.forename: Hong-Fei
authors.initials: HF
authors.lastname: Wu
mesh_terms: D000368:Aged; D000428:Alcohol Drinking / Q000453:epidemiology / Q000235:genetics*; D016022:Case-Control Studies; D002681:China / Q000453:epidemiology; D019392:Cytochrome P-450 CYP2E1 / Q000235:genetics*; D020022:Genetic Predisposition to Disease; D006801:Humans; D008297:Male; D008875:Middle Aged; D011110:Polymorphism, Genetic; D011471:Prostatic Neoplasms / Q000453:epidemiology / Q000235:genetics*; D012907:Smoking / Q000453:epidemiology / Q000235:genetics*
chemical_list: D019392:Cytochrome P-450 CYP2E1