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Calcium‐dependent Nedd4‐2 upregulation mediates degradation of the cardiac sodium channel Nav1.5: implications for heart failure

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Reductions in voltage‐gated sodium channel (Nav1.5) function/expression provide a slowed‐conduction substrate for cardiac arrhythmias. Nedd4‐2, which is activated by calcium, post‐translationally modulates Nav1.5. We aim to investigate whether elevated intracellular… Click to show full abstract

Reductions in voltage‐gated sodium channel (Nav1.5) function/expression provide a slowed‐conduction substrate for cardiac arrhythmias. Nedd4‐2, which is activated by calcium, post‐translationally modulates Nav1.5. We aim to investigate whether elevated intracellular calcium ([Ca2+]i) reduces Nav1.5 through Nedd4‐2 and its role in heart failure (HF).

Keywords: calcium; sodium channel; heart failure; channel nav1

Journal Title: Acta Physiologica
Year Published: 2017

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