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  • Title: Effect of the rhizomes of Atractylodes lancea and its constituents on the delay of gastric emptying.
    Author: Nakai Y, Kido T, Hashimoto K, Kase Y, Sakakibara I, Higuchi M, Sasaki H.
    Journal: J Ethnopharmacol; 2003 Jan; 84(1):51-5. PubMed ID: 12499077.
    Abstract:
    The effect of rhizomes of Atractylodes lancea on gastric disorders, in particular, the delay in gastric emptying induced by N(G)-nitro-L-arginine in rats, was investigated. Intragastric treatment with an aqueous extract (250 mg/kg) and its lipophilic fractions (4 mg/kg) significantly improved delayed gastric emptying. The major constituents of the lipophilic fraction were two sesquiterpens, hinesol and beta-eudesmol, and four known polyacetylenic compounds, atractylodin, atractylodinol, acetylatractylodinol and 4,6,12-tetradecatriene-8,10-diyne-1,3,14-triol. The activity was found in the four polyacetylenic compounds at a similar potency, but not in the two sesquiterpens. To clarify the effect of the four polyacetylenic compounds in this extract, we attempted to evaluate the activity of atractylodin, as representative, at a dose of 0.2 mg/kg based on the total amounts (0.2 mg/250 mg aqueous extract) of the four polyacetylenic compounds. In addition, atractylodin improved the delay in gastric emptying at between 0.1 and 0.3 mg/kg in a dose-dependent manner. These results suggest that the aqueous extract improved the delayed gastric emptying, and polyacetylenic compounds contributed to its activity.
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