The active ingredient from processed aconitine root as Na<sub>v</sub>1.7 voltage-gated sodium channels blocker
Proceedings for Annual Meeting of The Japanese Pharmacological Society(2020)
摘要
Processed roots of Aconitum carmichaeli (Ranunculaceae) (PA) has been known as one of the intense active herbal medicine in Japanese Kampo medicine. Because its raw root contains toxic alkaloids, PA has usually been used after the detoxication by autoclaving, and is prescribed to ameliorate various pains. However, the active ingredients of PA to produce antinociception has not been well identified. In this study, we examined the effect of seven alkaloids containing in PA on Nav1.7 voltage-gated sodium channels (VGSCs) transfected HEK293 cells. 10 μM mesaconitine, aconitine and hypaconitine, which are toxic alkaloids containing in the raw roots of A. carmichaeli, showed the inhibitory effects on Nav1.7 VGSCs peak currents significantly, and those effects continued after washing out of those compounds with perfusion. In contrast, benzoylmesaconine, benzoylaconine, aconine and hypaconine, which are produced after the autoclaving of PA, did not show the inhibitory effect on Nav1.7 VGSCs peak currents.
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关键词
aconitine root,sodium,active ingredient,voltage-gated
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