基于均匀设计的中药有效组分复方配伍研究

目的探索基于均匀设计的中药抗氧化有效组分复方的研究分析方法。方法采用均匀设计和改进最小角回归分析,对甘草总黄酮、银杏叶提取物、淫羊藿总黄酮和黄芪总苷组成的中药组分复方不同配比体外清除DPPH自由基的作用进行研究。结果通过分析获得了中药组分配伍清除DPPH的回归方程,优化组合后进行药效学验证,结果显示该中药组分配伍最佳剂量组合为甘草总黄酮0.8mg/ml、银杏叶提取物3.144mg/ml、淫羊藿总黄酮0.024mg/ml和黄芪总苷0.036mg/ml。结论上述中药组分配伍后能有效清除DPPH自由基;本实验采用的均匀设计结合改进最小角回归分析适合"非线性、小样本"生物实验数据数据分析,为筛选评价抗氧化中药有效组分复方提供了合适的研究方法。

Uniform designed research on the active ingredients assembling of Chinese herbal for antioxidative capacity

Objective To find a suitable way of quantitative composition-activity relationship of Chinese herbal for antioxidative capacity based on uniform design. Method Chinese herbal active ingredient formula was composed of Total flavonoids of Glycyrrhiza （TFG） , ginkgo biloba extract （GBE）, Total flavonoids of epimedium （TFE） and astragaloside （AST）. The herbal efficacy was detected by scavenging the free radical of DPPH in vitro, and the mathematical model was constructed to describe the connection between different combinations and their antioxidative capacity by the method of LARS regression. Result The best effect was in the ratio of TFG 0.8 mg/ml, GBE 3. 144 mg/ml, TFE 0.024 mg/ml, AST 0. 036 mg/ml. Conclusion Uniform designed research is one of efficient ways to describe the quantitative composition-activity relationship.