title: T102C polymorphism of the serotonin (5-HT) 2A receptor gene in patients with non-fatal acute myocardial infarction.
abstract: Serotonin (5-HT), released from activated platelets, has been implicated in the pathogenesis of acute myocardial infarction (AMI). 5-HT induces platelet aggregation and vascular contraction through 5-HT2A receptor activation at sites of coronary atherosclerosis, leading to thrombus formation. Recently, a 5-HT2A receptor gene T102C polymorphism has been reported to be associated with clinical response to 5-HT2A receptor antagonist in patients with schizophrenia, suggesting this polymorphism of the gene affects the 5-HT2A receptor function. To investigate the relationship between the T102C polymorphism and AMI, we conducted a case-control study of 255 non-fatal AMI patients and 255 control subjects. Among the patients, the prevalence of TT genotype was significantly higher than in controls (32.5 vs. 24.3%; P<0.05). In male patients (n=216), the prevalence was much higher than in control subjects (33.8 vs. 24. 1%, P<0.03). In multiple logistic regression models, odds ratio of TT genotype was 1.45 (95% CI 0.96-2.20) in all and 1.61 (95% CI 1. 03-2.53) (P<0.05) in males. The association of T102C polymorphism of the 5-HT2A receptor gene with non-fatal AMI was statistically significant and independent of other risk factors in males. The TT genotype of the 5-HT2A receptor gene may enhance susceptibility to AMI. Our observations suggest that the T102C polymorphism of the 5-HT2A receptor gene can serve as a new genetic marker for AMI.
authors.affiliation: The First Department of Internal Medicine, Kobe University School of Medicine, 7-5-1 Kusunoki-cho, Chuo-ku, Kobe, Japan.
authors.forename: S
authors.initials: S
authors.lastname: Yamada
authors.forename: H
authors.initials: H
authors.lastname: Akita
authors.forename: K
authors.initials: K
authors.lastname: Kanazawa
authors.forename: T
authors.initials: T
authors.lastname: Ishida
authors.forename: K
authors.initials: K
authors.lastname: Hirata
authors.forename: K
authors.initials: K
authors.lastname: Ito
authors.forename: S
authors.initials: S
authors.lastname: Kawashima
authors.forename: M
authors.initials: M
authors.lastname: Yokoyama
mesh_terms: D000368:Aged; D000483:Alleles; D016022:Case-Control Studies; D005260:Female; D005838:Genotype; D006801:Humans; D016015:Logistic Models; D008297:Male; D008875:Middle Aged; D009203:Myocardial Infarction / Q000235:genetics*; D016017:Odds Ratio; D016133:Polymerase Chain Reaction; D011110:Polymorphism, Genetic; D044402:Receptor, Serotonin, 5-HT2A; D011985:Receptors, Serotonin / Q000235:genetics*; D012307:Risk Factors
chemical_list: D044402:Receptor, Serotonin, 5-HT2A; D011985:Receptors, Serotonin