Evidence for association of polymorphisms in CYP2J2 and susceptibility to essential hypertension.
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.
Wu
Sheng-Nan
SN
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.
Zhang
Yi
Y
Gardner
Charles O
CO
Chen
Qi
Q
Li
Yan
Y
Wang
Gu-Liang
GL
Gao
Ping-Jin
PJ
Zhu
Ding-Liang
DL
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
C000717350:CYP2J2 protein, human; D003577:Cytochrome P-450 Enzyme System; D010105:Oxygenases; D000090762:Cytochrome P-450 CYP2J2