Wagner, Stefan and Maier, Lars S. and Bers, Donald M. (2015) Role of Sodium and Calcium Dysregulation in Tachyarrhythmias in Sudden Cardiac Death. CIRCULATION RESEARCH, 116 (12). pp. 1956-1970. ISSN 0009-7330, 1524-4571
Full text not available from this repository. (Request a copy)Abstract
Despite improvements in the therapy of underlying heart disease, sudden cardiac death is a major cause of death worldwide. Disturbed Na and Ca handling is known to be a major predisposing factor for life-threatening tachyarrhythmias. In cardiomyocytes, many ion channels and transporters, including voltage-gated Na and Ca channels, cardiac ryanodine receptors, Na/Ca-exchanger, and SR Ca-ATPase are involved in this regulation. We have learned a lot about the pathophysiological relevance of disturbed ion channel function from monogenetic disorders. Changes in the gating of a single ion channel and the activity of an ion pump suffice to dramatically increase the propensity for arrhythmias even in structurally normal hearts. Nevertheless, patients with heart failure with acquired dysfunction in many ion channels and transporters exhibit profound dysregulation of Na and Ca handling and Ca/calmodulin-dependent protein kinase and are especially prone to arrhythmias. A deeper understanding of the underlying arrhythmic principles is mandatory if we are to improve their outcome. This review addresses basic tachyarrhythmic mechanisms, the underlying ionic mechanisms and the consequences for ion homeostasis, and the situation in complex diseases like heart failure.
| Item Type: | Article |
|---|---|
| Uncontrolled Keywords: | CA2+/CALMODULIN-DEPENDENT PROTEIN-KINASE; SARCOPLASMIC-RETICULUM CA2+; T-WAVE ALTERNANS; POLYMORPHIC VENTRICULAR-TACHYCARDIA; ACTION-POTENTIAL PROLONGATION; BETA-ADRENERGIC STIMULATION; HISTONE H3 PHOSPHORYLATION; ACUTE-CORONARY-SYNDROME; LONG QT SYNDROME; LATE I-NA; alternans; arrhythmias; calcium; calcium; calmodulin-dependent kinase II; sodium |
| Subjects: | 600 Technology > 610 Medical sciences Medicine |
| Divisions: | Medicine > Lehrstuhl für Innere Medizin II |
| Depositing User: | Dr. Gernot Deinzer |
| Date Deposited: | 11 Jul 2019 12:53 |
| Last Modified: | 11 Jul 2019 12:53 |
| URI: | https://pred.uni-regensburg.de/id/eprint/5328 |
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