HPLC法同时测定灌胃黄芩水煎剂后大鼠血浆中黄芩苷和汉黄芩苷的质量浓度及药动学研究

被引:20
作者
路通
宋珏
谢林
王广基
刘晓东
机构
[1] 中国药科大学药物代谢研究中心
关键词
黄芩水煎剂; 黄芩苷; 汉黄芩苷; HPLC; 双峰现象;
D O I
暂无
中图分类号
R285 [中药药理学];
学科分类号
摘要
目的建立大鼠ig黄芩水煎剂后血浆中黄芩苷和汉黄芩苷的HPLC测定方法及药动学研究。方法大鼠ig黄芩水煎剂后,不同时间眼底静脉丛取血,制备血浆。血浆样品经甲醇沉淀蛋白,HPLC-UV测定血药浓度。色谱柱为Shim-packODS(250mm×4.6mm,5μm);流动相采用梯度洗脱,体积流量:1.5mL/min;检测波长:276nm。结果黄芩苷的线性范围为0.156~10μg/mL,汉黄芩苷的线性范围为0.109~7μg/mL,定量下限(LLOQ)分别为0.156和0.109μg/mL,日内和日间精密度(RSD)均小于15%,准确度(RE)为-6.82%3.26%。大鼠ig黄芩水煎剂后,血浆中黄芩苷和汉黄芩苷血药浓度-时间曲线均存在双峰:黄芩苷的tmax1和tmax2分别为(12.0±4.5)min和(7.2±1.79)h;Cmax1和Cmax2分别为(5.29±1.96)和(4.49±2.12)μg/mL,汉黄芩苷的tmax1和tmax2分别为(14.0±9.0)min和(6.8±1.1)h;Cmax1和Cmax2分别为(1.38±0.16)和(1.62±0.71)μg/mL;黄芩苷的CL/F为(4.72±1.68)L/h,汉黄芩苷的CL/F为(3.04±0.98)L/h。结论该方法经考察符合生物样品的测定要求,可应用于大鼠体内黄芩苷和汉黄芩苷血药浓度的测定和药动学研究。大鼠ig黄芩水煎剂后血浆中黄芩苷和汉黄芩苷质量浓度存在双峰现象,黄芩苷的口服清除率大于汉黄芩苷。
引用
收藏
页码:870 / 873
页数:4
相关论文
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