Key result
CaMKII promotes arrhythmia across various cardiac pathologies primarily through the regulation of diastolic sarcoplasmic reticulum calcium release and delayed afterdepolarizations.
This review provides a mechanistic framework for understanding how CaMKII contributes to arrhythmogenesis across various cardiac pathologies.
Answers are grounded in this paper and cite their sources.
Positions CaMKII inhibition as a research target in arrhythmias; leaves open clinical translation and prospective trials.
Calcium/calmodulin-dependent protein kinase II (CaMKII) activity has been shown to contribute to arrhythmogenesis in a remarkably broad range of cardiac pathologies. Several of these involve significant structural and electrophysiologic remodeling, whereas others are due to specific channelopathies, and are not typically associated with arrhythmogenic changes to protein expression or cellular and tissue structure. The ability of CaMKII to contribute to arrhythmia across such a broad range of phenotypes suggests one of two interpretations regarding the role of CaMKII in cardiac arrhythmia: (1) some CaMKII-dependent mechanism is a common driver of arrhythmia irrespective of the specific etiology of the disease, or (2) these different etiologies expose different mechanisms by which CaMKII is capable of promoting arrhythmia. In this review, we dissect the available mechanistic evidence to explore these two possibilities and discuss how the various molecular actions of CaMKII promote arrhythmia in different pathophysiologic contexts.
No takes yet. Share an insight, caveat, or question.
Vincent et al. (2014) conducted a review in CaMKII-mediated arrhythmia. CaMKII was evaluated. CaMKII promotes arrhythmia across various cardiac pathologies primarily through the regulation of diastolic sarcoplasmic reticulum calcium release and delayed afterdepolarizations.
Synapse has enriched 5 closely related papers on similar clinical questions. Consider them for comparative context: