期刊
JOURNAL OF MOLECULAR AND CELLULAR CARDIOLOGY
卷 83, 期 -, 页码 88-100出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.yjmcc.2015.02.003
关键词
Sinoatrial node; Pacemaking; Ion channels; Calcium handling; Atrial fibrillation; Arrhythmia
Sick sinus syndrome remains a highly relevant clinical entity, being responsible for the implantation of the majority of electronic pacemakers worldwide. It is an infinitely more complex disease than it was believed when first described in the mid part of the 20th century. It not only involves the innate leading pacemaker region of the heart, the sinoatrial node, but also the atrial myocardium, predisposing to atrial tachydysrhythmias. It remains controversial as to whether the dysfunction of the sinoatrial node directly causes the dysfunction of the atrial myocardium, or vice versa, or indeed whether these two aspects of the condition arise through some related underlying pathological mechanism, such as extracellular matrix remodeling, i.e., fibrosis. This review aims to shed new light on the myriad possible contributing factors in the development of sick sinus syndrome, with a particular focus on the sinoatrial nodal myocyte. This article is part of a Special Issue entitled CV Aging. (C) 2015 Published by Elsevier Ltd.
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