Vasodilator Effect of Extract Prepared from Uncariae Ramulus on Isolated Rat Aorta

Author:

Goto Hirozo1,Sakakibara Iwao2,Shimada Yutaka1,Kasahara Yuji1,Terasawa Katsutoshi1

Affiliation:

1. Department of Japanese Oriental Medicine, Toyama Medical and Pharmaceutical University, Sugitani 2630, Toyama 930-0194, Japan

2. Tsumura Central Research Laboratories, Tsumura & Co., 3586, Yoshiwara Ami-machi, Inashiki-gun, Ibaraki 300-1192, Japan

Abstract

Uncariae ramulus et Uncus (URE) has a vasodilator effect. Its mechanism consists of not only endothelium-independent relaxation with Ca 2+ channel blocking effect but also endothelium-dependent relaxation with nitric oxide. The active components are alkaloids and tannin contained in Uncariae ramulus et Uncus. They also show a superoxide dismutase-like effect and suppressed vasocontraction induced by xanthine and xanthine oxidase. These mechanisms may also influence vasodilatation by Uncariae ramulus et Uncus in vivo.

Publisher

World Scientific Pub Co Pte Lt

Subject

Complementary and alternative medicine,General Medicine

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