首页|Association of the antihypertensive response of iptakalim with KCNJ11 (Kir6.2 gene) polymorphisms in Chinese Han hypertensive patients
Association of the antihypertensive response of iptakalim with KCNJ11 (Kir6.2 gene) polymorphisms in Chinese Han hypertensive patients
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To study the relationship between the antihypertensive response of iptakalim and KCNJ11 polymorphisms in Chinese Han hypertensive patients.Methods:One hundred sixty two Chinese Han hypertensive patients were administered iptakalim (5 or 10 mg/d,po) for 8 weeks.Before the treatment and 24 h after completing the treatment blood pressure (BP) was measured.Genotyping was performed using direct sequencing.Results:Four common A190A,E23K,l337V and 3'UTR +62 G/A polymorphisms were found in KCNJ11.The E23K,l337V and 3'UTR +62 G/A polymorphisms were in complete linkage disequilibrium,and l337V was used as a representative.There were no significant differences in age,body mass index,sex,baseline systolic BP (SBP) and diastolic BP (DBP) among the 3 genotypes for the four polymorphisms.Significant association was found between SBP response and the polymorphisms (adjusted regression coefficient:3.5 [1.2] mmHg; P＝-0.003 for the A190A polymorphism; adjusted regression coefficient:3.1 [1.2] mmHg; P＝0.012 for the l337V polymorphism).The patients with TT genotype for A190A polymorphism had higher clinical efficacy than those with CC genotype.Conclusion:The results suggest the KCNJ11 polymorphisms are associated with the SBP-Iowering response of short-term iptakalim therapy in Chinese Han hypertensive patients.
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