title: Lack of association between the paraoxonase 1 Q/R192 single nucleotide polymorphism and stroke in a Chinese cohort.
abstract: BACKGROUND
  Serum paraoxonase (PON1) is an HDL-associated esterase that hydrolyzes products of lipid peroxidation and prevents the oxidation of LDL. Paraoxonase 1 (PON1) was implicated in susceptibility to stroke in previous studies. We investigated the correlation between the paraoxonase Gln-Arg 192 polymorphism (PON1Q/R192) and stroke including cerebral hemorrhage and cerebral infarction.
  
  
  METHODS
  The association between the paraoxonase Gln-Arg 192 polymorphism (PON1Q/R192) and stroke was investigated in 1019 subjects, which involved 305 cases with cerebral hemorrhage, 375 cases with cerebral infarction and 339 healthy controls.
  
  
  RESULTS
  The PON1Q/R192 genotype distribution in the cerebral hemorrhage group was QQ13.1%, QR48.2% and RR38.7% and in the cerebral infarction group was QQ13.6%, QR44.0% and RR42.4% respectively. There was no significant difference in PON1Q/R192 allele and genotype distribution between the patient group and the control group (P > 0.05). The PON1 polymorphism was not associated with cerebral hemorrhage or infarction.
  
  
  CONCLUSIONS
  Our study suggests that serum paraoxonase (PON1) is not associated with cerebral hemorrhage or infarction, although it is a lipolactonase which is associated with HDL-apolipoprotein A-I (HDL-apoA-I) and plays a role in the prevention of atherosclerosis.
authors.affiliation: Department of Neurology, Second Xiangya Hospital of Central-South University, Changsha, China.
authors.forename: Z J
authors.initials: ZJ
authors.lastname: Xiao
authors.forename: J
authors.initials: J
authors.lastname: Chen
authors.forename: Y
authors.initials: Y
authors.lastname: Sun
authors.forename: Z J
authors.initials: ZJ
authors.lastname: Zheng
mesh_terms: D000368:Aged; D043303:Aryldialkylphosphatase / Q000235:genetics*; D044466:Asian People / Q000235:genetics* / Q000706:statistics & numerical data; D002545:Brain Ischemia / Q000208:ethnology / Q000235:genetics; D002543:Cerebral Hemorrhage / Q000208:ethnology / Q000235:genetics; D002681:China / Q000453:epidemiology; D005260:Female; D005787:Gene Frequency; D020022:Genetic Predisposition to Disease / Q000208:ethnology; D005838:Genotype; D006801:Humans; D008297:Male; D008875:Middle Aged; D020641:Polymorphism, Single Nucleotide; D020521:Stroke / Q000208:ethnology / Q000235:genetics*
chemical_list: D043303:Aryldialkylphosphatase; C468406:PON1 protein, human