title: Human serum paraoxonase gene polymorphisms, Q192R and L55M, are not associated with the risk of cerebral infarction in Chinese Han population.
abstract: OBJECTIVE
  It has been reported that human serum paraoxonase (PON1) gene is associated with coronary heart disease (CHD) and diabetes mellitus (DM). However, little is known about the role of PON1 gene polymorphism in cerebral infarction (CI). For this, we have investigated the relationship between PON1 gene polymorphisms, Q192R and L55M, and CI in Chinese Han population.
  
  
  METHODS
  The PON1 genotypes, Q192R and L55M, from 153 CI patients and 153 healthy individuals, were determined by polymerase chain reaction (PCR) and restriction enzyme digestion. Their allele frequencies were then determined. The association of the PON1 gene polymorphism with the risk of CI was analysed by statistical analysis software.
  
  
  RESULTS
  The frequencies of PON1-Q192R genotypes in CI and control group are 13.7 and 9.8% (QQ), 51.6 and 53.6% (QR), 34.6 and 36.6% (RR) respectively. There is no significant difference in PON1-Q192R genotype (p=0.566) and allele frequencies (p=0.505) between CI patients and controls. The frequencies of PON1-55 genotypes in the CI and control group are 96.7 and 93.5% (LL), 3.3 and 6.5% (LM) respectively. No MM genotype was found in both CI and control group. No significant difference in genotype (p=0.289) and allele (p=0.296) distribution between CI patients and controls was observed.
  
  
  CONCLUSIONS
  Our results suggest that the human serum paraoxonase polymorphisms, Q192R and L55M, are not associated with the risk of cerebral infarction in Chinese Han population.
authors.affiliation: Institute of Neurology, Xiangya Hospital of Central South University, Changsha 410008, China.
authors.forename: Qing
authors.initials: Q
authors.lastname: Huang
authors.forename: Yun-hai
authors.initials: YH
authors.lastname: Liu
authors.forename: Qi-dong
authors.initials: QD
authors.lastname: Yang
authors.forename: Bo
authors.initials: B
authors.lastname: Xiao
authors.forename: Liang
authors.initials: L
authors.lastname: Ge
authors.forename: Ning
authors.initials: N
authors.lastname: Zhang
authors.forename: Jian
authors.initials: J
authors.lastname: Xia
authors.forename: Le
authors.initials: L
authors.lastname: Zhang
authors.forename: Zun-jing
authors.initials: ZJ
authors.lastname: Liu
mesh_terms: D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D043303:Aryldialkylphosphatase / Q000097:blood / Q000235:genetics*; D044466:Asian People / Q000235:genetics; D002544:Cerebral Infarction / Q000097:blood / Q000235:genetics*; D005260:Female; D005787:Gene Frequency; D005838:Genotype; D006801:Humans; D008297:Male; D008875:Middle Aged; D016133:Polymerase Chain Reaction; D011110:Polymorphism, Genetic; D012307:Risk Factors
chemical_list: D043303:Aryldialkylphosphatase; C468406:PON1 protein, human