基于生物效价和整合溶出度的六味五灵片体外溶出度研究

为了探讨化学-生物联合评价六味五灵片体外溶出度的可行性,该实验考察在0.1% SDS溶出介质中,不同溶出时间的六味五灵片溶出液对LX-2肝星状细胞的抑制作用,提出基于细胞抑制率所得六味五灵片的累积溶出度,与HPLC所测的五味子甲素、特女贞苷、连翘苷各指标成分的溶出度及自定义权重系数的多成分整合的溶出度运用f₂相似因子法分别进行相关性评价。结果显示,五味子甲素、连翘苷、特女贞苷各指标成分和整合溶出度与生物溶出度相比较,f₂相似因子依次为61,43,61,75,说明多成分整合的溶出度能更全面地反映全方的生物效价,以生物活性为导向的多成分整合的溶出度评价方法有望成为评价六味五灵片体外溶出度的有效手段之一。

In vitro dissolution rate of Liuwei Wuling tablet based on biological potency and integrated dissolution

To explore the feasibility of chemical and biological method in evaluation of the in vitro dissolution rate of Liuwei Wuling tablet (LWT), this experiment investigated the inhibitory effect of LWT dissolving solutions on LX-2 hepatic stellate cells in 0.1% SDS dissolution medium in different dissolving periods. From these results, the cumulative dissolution rate of LWT was obtained based on the cell inhibitory rate. The dissolution rates of deoxyschizandrin, phillyrin, and Specnuezhenide were determined by HPLC method. A novel approach of self-defined weighting coefficient had been created to establish the integrated dissolution rate model. Then f₂ similar factor method was used to evaluate the relevance of these two methods. The results showed that f₂ values for deoxyschizandrin, phillyrin, Specnuezhenide, and the integrated dissolution were 61, 43, 61 and 75 respectively, indicating that the dissolution of multicomponent integration could fully reflect the biological potency of the whole recipe. The dissolution evaluation method for multicomponent integration based on biological activity is expected to be one of the effective means for in vitro dissolution test of LWT.