心肌细胞内的Cl^-/HCO_3^-交换蛋白及其在实验性心肌缺血损伤中的作用
摘要
心肌细胞中存在阴离子交换蛋白(AE),其主要作用是转运Cl-/HCO3-,调节细胞内PH和细胞内[Cl-]。文献表明AE1、AE2、AE3在心肌细胞mRNA水平均有表达,但在蛋白水平上表达的主要有nAE1和cAE3。缺血条件下,心肌细胞膜上Cl-/HCO3-交换蛋白可激活,导致[Cl-]i增加与酸中毒,造成心肌细胞损伤。除去细胞外Cl-或运用Cl-阻断剂,多种原因诱导的再灌注性心律失常发生率显著降低,表现出较好的抗心律失常作用。
出处
《江西医学院学报》
2006年第1期163-164,166,共3页
Acta Academiae Medicinae Jiangxi
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