羟基红花黄色素A脂质载体及水溶液在大鼠体内的代谢、排泄、生物利用度研究

目的：研究不同的羟基红花黄色素A（HSYA）剂型对HSYA代谢、排泄、生物利用度的影响。方法：大鼠灌胃给予HSYA脂质制剂和水溶液,采用HPLC及LC-MS检测血浆、胆汁、粪便、尿液样品。结果：大鼠灌胃给予HSYA脂质制剂和水溶液后,在大鼠胆汁中均发现HSYA及其II相代谢产物;HSYA原药的质荷比为611,而两个II相代谢产物的质荷比分别为918和691,结合酶降解实验表明这两个代谢产物分别为HSYA的谷胱甘肽结合物和硫酸酯结合物。但是同水溶液相比,HSYA脂质制剂显著性降低了HSYA及其II相代谢产物从胆汁的排泄量。大鼠灌胃给予HSYA脂质制剂后,HSYA原药从胆汁、粪便、尿液中24h的累积排泄量分别为（0.05±0.03）%、（8.80±2.30）%、（37.99±17.50）%,其cmax、AUC0-8h分别为2.79μg·mL^-1、402.51μg·min·mL^-1;而大鼠灌胃给予HSYA水溶液后,HSYA原药从胆汁、粪便、尿液中24h的累积排泄量分别为（0.32±0.22）%、（44.66±8.00）%、（5.58±1.30）%,其cmax、AUC0-8h分别为0.08μg·mL^-1、10.73μg·min·mL^-1。结论：实验结果表明脂质制剂可能不会改变HSYA的代谢机制,但是显著性降低了HSYA从粪便和胆汁的排泄量,提高了其生物利用度。

Metabolism,Excretion and Bioavailability of Hydroxysafflor Yellow A after Oral Administration of Its Lipid-Based Formulation and Aqueous Solution in Rats

AIM:To characterize the effect of different oral formulations on the metabolism,excretion and bioavailability of hydroxysafflor yellow A(HSYA).METHODS:HSYA lipid-based formulation and aqueous solution were prepared and orally administered to rats.A gradient HPLC and LC-MS method was performed to determine HSYA concentration in rat serum,bile,urine and feces samples.RESULTS:The bile sample digestion test combining HPLC with LC-MS proved the existence of HSYA and phase II metabolites in bile for both formulat...