了哥王生品及2种炮制品的急性毒性比较研究

目的:比较了哥王生品及2种炮制品的急性毒性大小及其西瑞香素含量,为初步探讨2种炮制方法的机制提供依据.方法:制备了哥王生品浸膏、了哥王汗液炮制品浸膏、了哥王人工汗液炮制品浸膏;再将3种样品分别1次给予小鼠灌胃,记录各样品不同剂量组小鼠死亡只数,用Bliss法计算出各样品的半数致死量(LD50);并用高效液相色谱法测定3种样品中西瑞香素含量.结果:了哥王生品的LD50为46.678 g·kg-1,了哥王汗液炮制品的:LD50为72.190 g·kg-1,了哥王人工汗液炮制品的LD50为67.953 g·kg-1;生品、汗液炮制品、人工汗液炮制品中西瑞香素质量分数分别为0.189%,0.407%,0.345%.结论:2种了哥王炮制品的急性毒性均小于了哥王生品,表明2种炮制方法均能降低了哥王的毒性,但不是通过降低西瑞香素含量达到减毒目的.

Comparison of acute toxicity of extract of unprocessed indian atringbush root and its two different processed products

Objective : To compare the acute toxicity and content of daphnoretin among extracts of unprocessed indian stringbush root and its two different processed products, and to provide a basis for discussion of the mechanism of two processed methods. Method : Extracts of unprocessed indian stringbush root and processed indian stringbush root with "sweat" and "artificial sweat" were prepared. The mice were intragastrically administrated once with these three extracts, the mortalities of mice were observed, and the median lethal dose (LD₅₀) of different extracts were calculated with Bliss method. The determination of daphnoretin in these three samples was performed by high performance liquid chromatography. Result : The LD₅₀ of indian stringbush root extracts, indian stringbush root processed with "sweat" and with "artificial sweat" were 46.678, 72.190, 67.953 g·kg^-1, respectively. The contents of daphnoretin in unprocessed indian stringbush root, indian stringbush root processed with "sweat" and with "artificial sweat" were 0.189%, 0.407% and 0.345%, respectively. Conclusion : The toxicity of indian stringbush root processed with both "sweat" and "artificial sweat" is lower than that of the original rude drug. But the decreasion of toxicity of processed products is not by the reduced daphoretin content.