Myofilament Ca Sensitization Increases Cytosolic Ca Binding Affinity, Alters Intracellular Ca Homeostasis, and Causes Pause-Dependent Ca-Triggered Arrhythmia

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Myofilament Ca sensitization increases cytosolic Ca binding affinity, alters intracellular Ca homeostasis, and causes pause-dependent Ca-triggered arrhythmia.

RATIONALE Ca binding to the troponin complex represents a major portion of cytosolic Ca buffering. Troponin mutations that increase myofilament Ca sensitivity are associated with familial hypertrophic cardiomyopathy and confer a high risk for sudden death. In mice, Ca sensitization causes ventricular arrhythmias, but the underlying mechanisms remain unclear. OBJECTIVE To test the hypothesis t...

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Cellular Biology Myofilament Ca Sensitization Increases Cytosolic Ca Binding Affinity, Alters Intracellular Ca Homeostasis, and Causes Pause-Dependent Ca-Triggered Arrhythmia

Tilmann Schober, Sabine Huke, Raghav Venkataraman, Oleksiy Gryshchenko, Dmytro Ca Homeostasis, and Causes Pause-Dependent Ca-Triggered Arrhythmia Myofilament Ca Sensitization Increases Cytosolic Ca Binding Affinity, Alters Intracellular Print ISSN: 0009-7330. Online ISSN: 1524-4571 Copyright © 2012 American Heart Association, Inc. All rights reserved. is published by the American Heart Associat...

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Ethanol increases the activity of Ca(++)-dependent K+ (mslo) channels: functional interaction with cytosolic Ca++.

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ژورنال

عنوان ژورنال: Circulation Research

سال: 2012

ISSN: 0009-7330,1524-4571

DOI: 10.1161/circresaha.112.270041