AIMS: We investigated the correlation of adrenergic receptor polymorphisms, alpha(2c)Del322-325, beta(1)Ser49Gly and beta(1)Arg389Gly, with the risk of heart failure in the Japanese population. METHODS: These polymorphisms were analysed by polymerase chain reaction-restriction fragment length polymorphism in patients with chronic heart failure due to idiopathic dilated cardiomyopathy (DCM) and compared with the control group. RESULTS: There were no differences or any trends in the allele and genotype frequencies of the beta(1)Ser49Gly and beta(1)Arg389Gly polymorphisms. The allele frequency of the alpha(2c)Del322-325 variant was lower in patients than in controls (0.11 vs. 0.04, P = 0.011 < 0.017, by Bonferroni correction), while the genotype frequency just failed to reach significance (P = 0.022 > 0.017, by Bonferroni correction). CONCLUSIONS: In this population, the variants beta(1)Ser49, beta(1)Arg389, and alpha(2c)Del322-325 do not appear to be risk factors for chronic heart failure due to DCM. The alpha(2c)Del322-325 variant may in fact confer some protection.
AIMS: We investigated the correlation of adrenergic receptor polymorphisms, alpha(2c)Del322-325, beta(1)Ser49Gly and beta(1)Arg389Gly, with the risk of heart failure in the Japanese population. METHODS: These polymorphisms were analysed by polymerase chain reaction-restriction fragment length polymorphism in patients with chronic heart failure due to idiopathic dilated cardiomyopathy (DCM) and compared with the control group. RESULTS: There were no differences or any trends in the allele and genotype frequencies of the beta(1)Ser49Gly and beta(1)Arg389Gly polymorphisms. The allele frequency of the alpha(2c)Del322-325 variant was lower in patients than in controls (0.11 vs. 0.04, P = 0.011 < 0.017, by Bonferroni correction), while the genotype frequency just failed to reach significance (P = 0.022 > 0.017, by Bonferroni correction). CONCLUSIONS: In this population, the variants beta(1)Ser49, beta(1)Arg389, and alpha(2c)Del322-325 do not appear to be risk factors for chronic heart failure due to DCM. The alpha(2c)Del322-325 variant may in fact confer some protection.
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