改良Mini-Maze手术患者左心耳组织PITX2及KCNQ1蛋白表达特点分析及其临床相关性分析

目的 通过检测改良Mini-Maze手术心房颤动(房颤)患者左心耳组织PITX2及KCNQ1蛋白表达水平,结合临床数据对不同类型房颤的临床危险因素进行分析.方法 收集2017年2月至2018年8月因房颤于本中心行手术患者共59例的左心耳组织,其中58例行改良Mini-Maze手术,即双侧微创切口下行双极射频消融术、双侧...

Relationship between the expression levels of PITX2 and KCNQ1 in left atrial appendage tissue and the clinical characteristics in atrial fibrillation patients after modified mini-maze procedure

Objective To detect the expression of PITX2 and KCNQ1 in the left atrial appendage of patients with atrial fibrillation after modified mini-maze procedure,and to detect the clinical risk factors of different types of atrial fibrillation.Methods We collected left atrial appendage tissue of 59 atrial fibrillation patients who received modified mini-maze procedure and left atrial appendectomy from February 2017 to August 2018.The expression levels of PITX2 and KCNQ1 of left atrial appendage tissue were quantitatively analyzed by western blotting assay between paroxysmal attial fibrillation and persistent atrial fibrillation groups.The correlation between protein expression and prognosis after surgery was also analyzed based on clinical data.Results Binary-logistic regression analysis showed that KCNQ1 expression level was an independent risk factor for the progression from paroxysmal atrial fibrillation to persistent atrial fibrillation.Receiver operating characteristic(ROC)curve confirmed that KCNQ1 expression level(the ratio of KCNQ1 to actin in the analysis)was 0.60,which was the best cut-off point for the progression of paroxysmal atrial fibrillation to persistent atrial fibrillation.Conclusion High expression of KCNQ1 in left atrial appendage is a risk factor for progression from paroxysmal atrial fibrillation to persistent atrial fibrillation.