Key result
Isoproterenol induced delayed afterdepolarizations, oscillatory arrhythmic prepotentials, and diastolic calcium rise in CPVT-derived iPSC-cardiomyocytes but not in control cardiomyocytes.
Patient-specific iPSC-derived cardiomyocytes with the CASQ2 D307H mutation successfully model the arrhythmogenic mechanisms of CPVT in response to β-adrenergic stimulation.
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Patient-specific iPSC-cardiomyocytes enable CPVT mechanism studies; hypothesis-generating before clinical translation.
Novak et al. (2011) studied Catecholaminergic polymorphic ventricular tachycardia (CPVT) (n=2). Isoproterenol vs. Control cardiomyocytes was evaluated on Electrophysiological abnormalities (delayed afterdepolarizations, oscillatory arrhythmic prepotentials, after-contractions, and diastolic [Ca2+]i rise). Isoproterenol induced delayed afterdepolarizations, oscillatory arrhythmic prepotentials, and diastolic calcium rise in CPVT-derived iPSC-cardiomyocytes but not in control cardiomyocytes.
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