Abstract:
BACKGROUND:The human KCNE1 protein forms the β-subunit of the IKs potassium channel and is important in the regulation of the atrial action potential duration. The purpose of this study was to investigate the association between the nonsynonymous 112G>A mutation of the KCNE1 gene and postcardiac surgery atrial fibrillation (AF). METHODS AND RESULTS:A cohort of patients scheduled for cardiac surgery was prospectively recruited. The genotype of 112G>A polymorphism was determined using polymerase chain reaction/restriction fragment analysis and confirmed with direct sequencing of the polymerase chain reaction product. In total, 509 patients were recruited in the study, of whom 203 (39.9%) had at least 1 qualifying episode of postoperative AF. An increased frequency of the G allele was observed in the postoperative AF group compared with the group without postoperative AF (0.628 vs 0.552, respectively, P = .016). The individual's relative risk of postoperative AF increased as the number of G alleles increased from 1.36 (95% CI 0.89-2.08) for G allele heterozygotes to 1.62 (95% CI 1.08-2.43) for G allele homozygotes (P = .04 for trend). The multivariate analysis revealed the abnormal ejection fraction (odds ratio [OR] 1.585, 95% CI 1.076-2.331, P = .020), age (OR 1.043, 95% CI 1.022-1.064, P < .001), type of surgery (aortic valve replacement) (OR 1.869, 95% CI 1.094-3.194, P = .022), and the 112G>A genotype (OR 1.401 [in additive model], 95% CI 1.052-1.865, P = .021) to be independent predictors of postoperative AF. CONCLUSION:This study confirmed the association of the 112G>A polymorphism and postoperative AF in a cohort of patients undergoing cardiac surgery.
journal_name
Am Heart Jjournal_title
American heart journalauthors
Voudris KV,Apostolakis S,Karyofillis P,Doukas K,Zaravinos A,Androutsopoulos VP,Michalis A,Voudris V,Spandidos DAdoi
10.1016/j.ahj.2013.09.020subject
Has Abstractpub_date
2014-02-01 00:00:00pages
274-280.e1issue
2eissn
0002-8703issn
1097-6744pii
S0002-8703(13)00713-8journal_volume
167pub_type
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pub_type: 临床试验,杂志文章
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更新日期:1996-03-01 00:00:00
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更新日期:1997-02-01 00:00:00
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更新日期:2007-10-01 00:00:00
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更新日期:2003-02-01 00:00:00
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pub_type: 杂志文章
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更新日期:2013-01-01 00:00:00
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pub_type: 临床试验,杂志文章
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更新日期:2008-03-01 00:00:00
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pub_type: 临床试验,杂志文章,随机对照试验
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pub_type: 临床试验,杂志文章
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pub_type: 杂志文章,多中心研究,随机对照试验
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