目的 研究红芪提高正常小鼠机体免疫功能活性部位与HPLC指纹图谱的相关性。方法 建立二硝基氟苯(DNFB)所致小鼠迟发型变态反应(DTH)模型,以1批甘肃宕昌野生红芪的不同提取部位ig给药,选择最优部位。HPLC测定条件:色谱柱为Hypersil ODS C₁₈柱(250 mm×4.6 mm,5μm),流动相为乙腈和0.1%甲酸,梯度洗脱;体积流量为1.0 mL/min,柱温为30℃,检测波长为275 nm;测定12批红芪药材水提部位的HPLC指纹图谱及其提高免疫功能的活性,采用偏最小二乘(PLS)法将HPLC图谱的各组分峰面积与提高免疫功能药效指标相关联,研究谱效相关性。结果 红芪水提部位提高免疫功能活性最强,根据PLS法回归系数大小确定红芪药材水提部位中物质群对提高机体免疫功能的贡献程度,常用于表征红芪质量的腺苷、芒柄花苷、金雀异黄酮、芒柄花素、美迪紫檀素等指标化合物均表现为负相关。结论 红芪药材水提部位具有明显的提高免疫功能活性,不同来源的红芪药材提高免疫功能的活性不同,谱效关系研究表明常用于表征红芪质量的腺苷、芒柄花苷、金雀异黄酮、芒柄花素、美迪紫檀素等指标化合物对红芪提供免疫功能活性未表现出积极作用。

Objective To study the correlation of HPLC fingerprint of Hedysari Radix and efficacy of improving immunity of normal mice, and provide the basis for finding bioactive components and selecting the index composition of quality control. Methods The mice delayed type hypersensitivity(DTH) model induced by dinitoflruorobenzene(DNFB) was used to study the effect and then to perform ig administration with different extracts of Hedysari Radix for selecting the best part. To study the correlation between fingerprint and efficacy and find out the effective substances foundation of improving immunity, the peak area of each common peak from HPLC fingerprint was associated with the date of improving immunity in the method of partial least square regression(PLS). Results In ear swelling experiment, water extract of Hedysari Radix was the most effective part which could improve the immunity function. PLS was used to evaluate the correlation of effect of improving immunity and components of the water extract including adenosine, ononin, genistein, formononeti, and medicarpin, the index of compounds to characterize the quality of Hedysari Radix, showed the negative correlation with the effectiveness. Conclusion A new method is established to evaluate the activity of enhancing immunity of Hedysari Radix. It is of practical significance as an effective approach for controlling quality and exploring the material basis for efficacy of traditional Chinese medicine compounds.

兰州大学"中央高校基本科研业务费专项资金"自由探索-小额探索项目(lzujbky-2014-218);甘肃省中药药理与毒理学重点实验室开放课题项目(ZDSYS-KJ-2013-004)