PMID: 61710Feb 1, 1976Paper

Pharmacology of sinomenine, an anti-rheumatic alkaloid from Sinomenium acutum

Acta Medica Okayama
H Yamasaki

Abstract

The root and stem decoctions of Sinomenium acutum Rehd. et Wils. (formerly Sinomenium diversifolius Diels, one type of Fang-chi (Chinese)) have been used as a folk remedy for neuralgia and rheumatoid arthritis in many areas of the Far East. In Japan and China various viny plants have been identified as Fang-chi (Boi in Japanese) since antiquity. This uncertain nomenclature has made it difficult to evaluate the efficacy of the Fang-chi described in the classic literature. Among traditional Fang-chi plants only Sinomeniumacutum has been demonstrated to contain the alkaloid sinomenine, which is now known to be effective in neuralgia and rheumatic diseases. Sinomenine is a unique plant alkaloid, as it potently releases histamine in association with degranulation of tissue mast cells in mammalian tissues. This action occurs preferentially in the skin and joint capsules. The released histamine is responsible for the dominant pharmacological actions of sinomenine, such as vasodilatation, increased vascular permeability, acceleration of the thoracic and peripheral lymph flow, contraction of plain muscles, increased peristalsis of the intestines, and stimulation of gastric acid secretion. At toxic doses of sinomenine, convulsive central...Continue Reading

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