HPLC法测人血浆中丹皮酚浓度及其药代动力学研究

目的：建立HPLC丹皮酚胶囊血浓度测定方法，评价丹皮酚胶囊的药代动力学特点。方法：24名健康志愿者单剂量口服160mg丹皮酚胶囊，按设定时间采集肘静脉血经乙睛萃取处理，以XB—C18（250mm×4．6mm，5μm）色谱柱为固定相，四氢呋喃-甲醇-水-磷酸（6：60：34：0．1）为流动相测定丹皮酚血浆浓度。采用DAS2．0计算丹皮酚主要药动学参数。结果：丹皮酚线性范围10—500mg／mL，最低检出浓度为10ng／mL。主要药代动力学参数：Cmax为（116±46）ng／mL，tmax为（1．02±0．13）h，t1/2为1．03h。结论：建立的HPLC方法特异性强、灵敏度高，可用于丹皮酚血药浓度测定和人体药动学研究。

Determination of paeonol in human plasma by HPLC and its pharmacokinetic studies

AIM: To establish a sensitive HPLC method for determining the concentrations of paeonol in human plasma and to evaluate its pharmacokinetic characteristics. METHODS: A single oral dose of 160 mg paeonol capsules was given to 24 Chinese healthy volunteers. Paeonol was separated on a XB-C18 column with tetrahydrofuran-methanol-water-phosphonic acid (6∶60∶34∶0.1, V∶V) as mobile phase. The plasma concentrations of paeonol were determined and its pharmacokinetic parameters were calculated and evaluated using DAS 2.0. RESULTS: The linear range of the paeonol was 10-500 ng/mL and the determination limit was 10 ng/mL. The main pharmacokinetic parameters, as Cmax, tmax, t1/2,AUC0-3, AUC0-∞ after a single dose of paeonol capsules were (116±46)ng/mL,(1.02±0.13) h,(1.03±0.35) h, (174±45) ng/mL, (217±56) ng/mL,respectively. CONCLUSION: The HPLC method for determining paeonol concentration in plasma is rapid, sensitive and suitable for pharmacokinetic studies.