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Antiarrhythmic Mechanisms of Chinese Herbal Medicine Dingji Fumai Decoction

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Date 2020 Apr 8
PMID 32256664
Citations 12
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Abstract

Background: Dingji Fumai decoction (DFD) is used to treat ventricular arrhythmia, and it has provided a very good curative effect. However, its cellular electrophysiological mechanism is unknown.

Methods: Electrocardiogram was recorded, and oxidative stress response and ion-channel-related molecules were detected in rats with barium chloride- and aconitine-induced ventricular arrhythmia. Moreover, whole-cell patch-clamp assay was used to investigate the inhibitory effect of DFD on Nav in Chinese hamster ovary cells.

Results: DFD prolonged the occurrence time and shortened the duration of ventricular arrhythmia, decreased the malondialdehyde and increased the superoxide dismutase, and alleviated the activation of Na-K-ATPase and connexin-43. DFD suppressed Navdose-dependently with an IC of 24.0 ± 2.4 mg/mL.

Conclusions: The clinical antiarrhythmic mechanisms of DFD are based on its antioxidant potential, alleviation of Na-K-ATPase and connexin-43, and class I antiarrhythmic properties by suppressing Navdose-dependently with an IC of 24.0 ± 2.4 mg/mL.

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