心房颤动患者心房纤维化分子基础的临床研究

被引:24
作者
柯丹
许春萱
林亚洲
张建成
陈林
林立芳
胡锡衷
机构
[1] 福建省心血管病研究所心内科,福建省心血管病研究所心内科,福建省心血管病研究所心内科,福建医科大学省立临床学院,福建省心血管病研究所心内科,福建省心血管病重点实验室,福建省心血管病研究所心内科福州,武警福建总队医院在读研究生,福州,福州,福州,福州
关键词
心房颤动; 胶原; 基质金属蛋白酶; 金属蛋白酶类组织抑制剂;
D O I
暂无
中图分类号
R541.7 [心律失常];
学科分类号
1002 ; 100201 ;
摘要
目的研究风湿性心脏瓣膜病(风心病)心房颤动(房颤)患者心房组织中胶原、基质金属蛋白酶2(matrixmetalloproteinases2,MMP2)及其内源性抑制剂金属蛋白酶组织抑制因子(tissueinhibitorsofmetalloproteinases,TIMPs)的基因转录,探讨房颤患者心房纤维化的分子机制及其在房颤发生、持续中的作用。方法73例风心病接受换瓣手术者分为三组,其中窦性心律组34例,阵发性房颤组9例,持续性房颤组30例。于术中获取右心耳组织,应用半定量逆转录聚合酶链反应(RT PCR)方法,测定心房组织中Ⅰ型胶原、Ⅲ型胶原、MMP2、TIMP1、TIMP2、TIMP3、TIMP4的mRNA水平。结果与窦性心律组比较,Ⅰ型胶原、MMP2的mRNA在阵发性房颤患者(均为P<0.05)、持续性房颤患者(均为P<0.01)心房组织中的表达均明显增加。房颤患者Ⅲ型胶原的mRNA表达虽有增加,但无统计学意义(P>0.05)。持续性房颤组TIMP1、TIMP2、TIMP3的mRNA表达明显下调(均为P<0.01)。TIMP4的mRNA表达水平在各组中差异无统计学意义(P>0.05)。Ⅰ型胶原的mRNA表达水平与左心房内径(r=0.336,P=0.004)、房颤持续时间(r=0.339,P=0.003)呈正相关;MMP2的mRNA表达水平与TIMP2的mRNA表达水平呈负相关(r=-0.326,P=0.006),与Ⅰ型胶原(r=0.322,P=0.006)、左心房内径(r=0.300,P=0.011)、房颤持续时
引用
收藏
页码:459 / 463
页数:5
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