title: Evidence for association of polymorphisms in CYP2J2 and susceptibility to essential hypertension.
abstract: OBJECTIVE
  Evidence from animal models and human studies suggests that CYP2J2 plays a mechanistic role in the development of hypertension. The present study aims to investigate the potential genetic contribution of the CYP2J2 gene to the etiology of essential hypertension (EH) and individual blood pressure.
  
  
  METHODS
  We selected eight polymorphisms in/or around the CYP2J2 gene and performed a case-control association study involving 841 Han Chinese subjects, including 415 unrelated hypertensives and 426 age-, gender- and area-matched normotensives.
  
  
  RESULTS
  Three functionally identified variants (CYP2J2 *2, *7 and CYP2J2 *8) and SNP rs11572182 represented rare polymorphisms in Han Chinese. However, the difference in rs1155002 genotype distribution between hypertensive and healthy subjects was close to significance (P = 0.06) in the whole sample. Interestingly, significant evidence for an association with rs1155002 was found in females when stratified by gender. In females, the TT homozygote of rs1155002 seems to be a risk factor for hypertension (p = 0.014). In addition, ANOVA analysis suggested TT carriers had significantly higher systolic blood pressure (p = 0.016). The genotype frequencies for rs10493270, rs1180273 and rs1324491 revealed no statistically significant differences. Likewise, four-marker haplotype frequencies showed no significant differences between cases and controls.
  
  
  CONCLUSIONS
  Our data provide strong evidence that the CYP2J2 gene is a susceptibility factor for essential hypertension, especially in females, and influences individual systolic blood pressure in the Chinese Han population.
authors.affiliation: Shanghai Key Laboratory of Vascular Biology at Ruijin Hospital and Shanghai Institute of Hypertension, State Key Laboratory of Medical Genomics, Shanghai Jiao Tong University School of Medicine, Shanghai 200025, P.R. China.
authors.forename: Sheng-Nan
authors.initials: SN
authors.lastname: Wu
authors.forename: Yi
authors.initials: Y
authors.lastname: Zhang
authors.forename: Charles O
authors.initials: CO
authors.lastname: Gardner
authors.forename: Qi
authors.initials: Q
authors.lastname: Chen
authors.forename: Yan
authors.initials: Y
authors.lastname: Li
authors.forename: Gu-Liang
authors.initials: GL
authors.lastname: Wang
authors.forename: Ping-Jin
authors.initials: PJ
authors.lastname: Gao
authors.forename: Ding-Liang
authors.initials: DL
authors.lastname: Zhu
mesh_terms: D000367:Age Factors; D001794:Blood Pressure / Q000235:genetics*; D002681:China / Q000208:ethnology; D000090762:Cytochrome P-450 CYP2J2; D003577:Cytochrome P-450 Enzyme System / Q000235:genetics*; D016208:Databases, Factual; D005260:Female; D005787:Gene Frequency; D005838:Genotype; D006239:Haplotypes; D006801:Humans; D006973:Hypertension / Q000201:enzymology / Q000209:etiology / Q000235:genetics*; D008297:Male; D010105:Oxygenases / Q000235:genetics*; D011110:Polymorphism, Genetic; D012737:Sex Factors
chemical_list: C000717350:CYP2J2 protein, human; D003577:Cytochrome P-450 Enzyme System; D010105:Oxygenases; D000090762:Cytochrome P-450 CYP2J2