期刊
AMERICAN JOURNAL OF PHYSIOLOGY-HEART AND CIRCULATORY PHYSIOLOGY
卷 325, 期 3, 页码 H475-H491出版社
AMER PHYSIOLOGICAL SOC
DOI: 10.1152/ajpheart.00184.2023
关键词
cardiomyocyte; connexin-43; heterocellular coupling; nonmyocyte
This review provides an overview of heterocellular electrical communication in the heart, highlighting the roles of cardiac fibroblasts and macrophages in cardiac electrophysiology and arrhythmogenesis.
Although cardiac action potential (AP) generation and propagation have traditionally been attributed exclusively to cardiomyocytes (CM), other cell types in the heart are also capable of forming electrically conducting junctions. Interactions between CM and nonmyocytes (NM) enable and modulate each other's activity. This review provides an overview of the current understanding of heterocellular electrical communication in the heart. Although cardiac fibroblasts were initially thought to be electrical insulators, recent studies have demonstrated that they form functional electrical connections with CM in situ. Other NM, such as macrophages, have also been recognized as contributing to cardiac electrophysiology and arrhythmogenesis. Novel experimental tools have enabled the investigation of cell-specific activity patterns in native cardiac tissue, which is expected to yield exciting new insights into the development of novel or improved diagnostic and therapeutic strategies.
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