Metabolic stress exacerbates Ca2+ dysregulation and arrhythmias in catecholaminergic polymorphic ventricular tachycardia.
Catecholaminergic polymorphic ventricular tachycardia (CPVT) is a genetic arrhythmic syndrome caused by mutations in the sarcoplasmic reticulum (SR) calcium (Ca2+) release channel RyR2 or its accessory proteins, including calsequestrin-2 (CASQ2). RyR2 dysfunction or leak is the hallmark feature of CPVT and directly tri...