Key result
Dingji Fumai decoction prolonged the occurrence time and shortened the duration of ventricular arrhythmia in rats, and suppressed Nav1.5 dose-dependently with an IC50 of 24.0 ± 2.4 mg/mL.
Why the study?
Dingji Fumai decoction is used to treat ventricular arrhythmia, but its cellular electrophysiological mechanism is unknown.
Does Dingji Fumai decoction improve ventricular arrhythmia parameters and inhibit Nav1.5 channels in preclinical models?
Population
Rats with barium chloride- and aconitine-induced ventricular arrhythmia and Chinese hamster ovary cells
Comparison
Dingji Fumai decoction administration
Design
Preclinical in vivo and in vitro experimental study
Authors
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No immediate clinical implications for ventricular arrhythmia; leaves open antiarrhythmic potential of Dingji Fumai decoction pending human studies.
Does Dingji Fumai decoction improve ventricular arrhythmia parameters and inhibit Nav1.5 channels in preclinical models?
Dingji Fumai decoction exhibits antiarrhythmic properties in preclinical models through antioxidant effects and dose-dependent suppression of Nav1.5 channels.
Liang et al. (2020) studied Ventricular arrhythmia. Dingji Fumai decoction (DFD) was evaluated on Occurrence time and duration of ventricular arrhythmia, oxidative stress response, and Nav1.5 suppression. Dingji Fumai decoction prolonged the occurrence time and shortened the duration of ventricular arrhythmia in rats, and suppressed Nav1.5 dose-dependently with an IC50 of 24.0 ± 2.4 mg/mL.
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