title: [Association between the polymorphism of CYP17 gene and risk of prostate cancer in chinese vigurs men].
abstract: OBJECTIVE
  To investigate the association between the polymorphism of CYP17 gene and risk of prostate cancer in Chinese Vigurs men.
  
  
  METHODS
  A case-control study including 31 patients with prostate cancer and 104 aged-matched controls was conducted. The polymorphism was investigated by PCR using DNA from peripheral blood lymphocytes. The transition (T-->C) in the risk allele (A2) produced a new recognition site for the restriction enzyme MSPAI I. Three genotypes of CYP17 gene (A1/A1, A1/A2, A2/A2) were determined and confirmed by sequencing.
  
  
  RESULTS
  Compared with male A1/A1 genotype, the odds ratios were 1.49 and 2.87 for the A1/A2 and A2/A2 genotypes (P =0.321, 0. 052, respectively). Comparison among 3 subgroups (division by genetypes) of prostate cancer patients, the PSA levels were not significantly different. But in the controls, PSA levels in A1/A2 group were higher but not significant than those in A1/A1 group (P = 0.062). Then, PSA levels in A2/A2 group were significantly higher than those A1/ A1 group (P = 0.018).
  
  
  CONCLUSIONS
  More frequency of A2/A2 genotype in prostate cancer than in the control may be associated with the morbidity of prostate cancer in Vigurs male population. Meanwhile, the significant high PSA levels in A2/A2 group also support the view.
authors.affiliation: Department of Urology, Friendship Hospital of Wulumuqi City, Wulumuqi, Xinjiang 830049, China. gonglili999@126.com
authors.forename: Mi-Re
authors.initials: MR
authors.lastname: Guli
authors.forename: Jun-Qi
authors.initials: JQ
authors.lastname: Wang
authors.forename: Jie-Xiang
authors.initials: JX
authors.lastname: Zhang
authors.forename: Gang
authors.initials: G
authors.lastname: Deng
mesh_terms: D000368:Aged; D000369:Aged, 80 and over; D016022:Case-Control Studies; D002681:China / Q000208:ethnology; D006801:Humans; D008297:Male; D008875:Middle Aged; D016133:Polymerase Chain Reaction; D011110:Polymorphism, Genetic; D011471:Prostatic Neoplasms / Q000208:ethnology / Q000235:genetics*; D013254:Steroid 17-alpha-Hydroxylase / Q000235:genetics*
chemical_list: D013254:Steroid 17-alpha-Hydroxylase