[Association of GLu461ALa polymorphism of prostacyclin synthase gene with myocardial infarction in Uigur population].
OBJECTIVE
To investigate the association between the polymorphism of prostacyclin synthase gene (CYP8A1) and myocardial infarction (MI) in Uigur population.


METHODS
Totally 210 patients with MI and 206 healthy control subjects were detected by polymerase chain reaction and restriction fragment length polymorphism. The serum 6-keto-PGF(1alpha) was detected with radioimmunoassay kit in all subjects.


RESULTS
The frequencies of CC, AC and AA were 0.024 (5/210), 0.124 (26/210) and 0.852 (179/210) in MI group while ones those 0.010 (2/206), 0.073 (15/206) and 0.917 (189/206) in the controls. There was no significant difference in frequencies of CC, AC and AA genotypes between controls and MI cases (chi(2) = 0.782, P > 0.05), but the frequency of CC + AC genotype in MI group [0.14 (31/210)] was higher than that in the controls [0.083 (17/206)] giving significant difference (chi(2) = 4.321, P = 0.031). The C allele frequency in the MI group [0.086 (36/420)] was higher than that in the controls [0.046 (19/412)] showing significant statistical difference (chi(2) = 5.284, P = 0.021). There was significant difference (t = 6.255, P < 0.01) in serum 6-keto-PGF(1alpha) level between MI group [(17.40 +/- 4.56) pg/ml] and control group [(20.34 +/- 5.02) pg/ml]. In the cases and control group, the serum 6-keto-PGF(1alpha) level of the persons with CC + AC genotype [(14.30 +/- 3.31) pg/ml, (18.31 +/- 4.62) pg/ml] was lower than those of AA genotypes [(19.34 +/- 5.51) pg/ml, (25.10 +/- 5.00) pg/ml], and the statistical significance was also observed (t' = 6.934, P < 0.05; t = 5.393, P < 0.01). Logistic regression analysis showed that the C allele of the CYP8A1 gene was an independent risk factor for MI (OR = 1.77; 95% CI: 1.06 - 2.05).


CONCLUSIONS
The C allele of CYP8A1 might be a risk factor of MI in Uigur population, and be resulting from the decrease of serum 6-keto-PGF(1alpha) level for gene variation.
Xie
Xiang
X
Department of Cardiology, First Affiliated Hospital, Xinjiang Medical University, Urumqi, China.
Ma
Yi-tong
YT
Fu
Zhen-yan
ZY
Yang
Yi-ning
YN
Ma
Xiang
X
Wang
Ying-hong
YH
Chen
Bang-dang
BD
Liu
Fen
F
D000368:Aged; D000483:Alleles; D044466:Asian People / Q000235:genetics; D003577:Cytochrome P-450 Enzyme System / Q000235:genetics*; D005260:Female; D005787:Gene Frequency; D020022:Genetic Predisposition to Disease; D005838:Genotype; D006801:Humans; D019746:Intramolecular Oxidoreductases / Q000235:genetics*; D008297:Male; D008875:Middle Aged; D009203:Myocardial Infarction / Q000208:ethnology* / Q000235:genetics*; D011110:Polymorphism, Genetic; D044382:Population Groups
D003577:Cytochrome P-450 Enzyme System; D019746:Intramolecular Oxidoreductases; C022461:prostacyclin synthetase