节点文献
泮托拉唑对映体在大鼠体内的药物动力学研究
Pharmacokinetics study of pantoprazole enantiomers in rats
【摘要】 目的:研究泮托拉唑(Pan)对映体在大鼠体内的药物动力学差异。方法:采用纤维素-三-(4-甲基苯甲酰酯)为手性固定相,以100mmol·L-1磷酸盐缓冲液(pH 5.5)-乙腈(70:30)为流动相,测定了大鼠灌胃给予消旋体泮托拉唑5mg·kg-1后7h 内对映体的血浆药物浓度。结果:血药浓度-时间曲线经3P87拟合表明,Pan 对映体的体内过程均符合二室模型,l-Pan 和d -Pan 的主要药代动力学参数分别为:Cmax(1.63±1.22),(2.17±1.33)μ·mL-1;AUC0→∞(2.89±1.54),(2.69±1:60)μg·h·mL-1;T1/2(6.42±2.70),(0.65±0.26)h。结论:实验结果表明,泮托拉唑对映体在大鼠体内的药物动力学存在立体选择性特征。
【Abstract】 Objective:To study the pharmacokinetics of pantoprazole(Pan)enantiomers in rats.Methods:A 7 h blood collection was done after rats administrating racemic Pan at a dose of 5 mg·kg-1by intragastric administra- tion.The plasma concentrations of Pan were measured by chiral stationary phase HPLC method(CSP-HPLC)with a mobile phase consisted of 100 mmol·L-1sodium phosphate buffer(pH 5.5)-acetonitrile(70:30).Results: The disposition of l-Pan and d-Pan was conformed to two-compartment model by 3P87 program.Maximal plas- ma concentration(Cmax):1-Pan was(1.63±1.22)μg·mL-1,d-Pan was(2.17±1.33)μg·mL-1.Area un- der blood concentration-time(AUC0→∞):l-Pan was(2.89±1.54)μg·h·mL-1,d-Pan was(2.69±1.60) μg·h·mL-1.The biological half life(T1/2):l-Pan was(6.42±2.70)h,d-Pan was(0.65±0.26)h.Conclu- sion:The results indicate that the pharmacokinetics of pantoprazole enantiomers has an.stereoselective character in rats.
- 【文献出处】 药物分析杂志 ,Chinese Journal of Pharmaceutical Analysis , 编辑部邮箱 ,2006年06期
- 【分类号】R96
- 【被引频次】10
- 【下载频次】208