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硫普罗宁在大鼠体内的手性药动学 被引量:3

Stereoselective pharmacokinetics of tiopronin enantiomers in rats
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摘要 目的:研究左旋、右旋硫普罗宁在大鼠体内的立体选择性药动学过程。方法:大鼠静脉注射左旋、右旋及消旋硫普罗宁后,用柱前衍生化与LC-MS联用方法测定血浆中药物的浓度。色谱柱为Shimadzu VP-ODS C18(150mm×2.0mm,5.0μm),流动相为甲醇-水(含5.3mmol/L甲酸,0.1mmol/L氯化钠),以0.2mL/min流速进行梯度洗脱。扫描方式为选择性离子检测(SIM),采用正离子方法检测。结果:给予硫普罗宁消旋体后,左旋体和右旋体的t1/2分别为(1.49±0.57)h和(0.58±0.24)h,AUC0-∞分别为(15.17±5.95)μg/mL.h和(10.52±3.72)μg/mL.h,CL分别为(1.31±0.70)L/h和(1.79±0.81)L/h;分别静脉注射给予硫普罗宁对映体后,左旋、右旋硫普罗宁的t1/2分别为(1.52±0.28)h和(0.78±0.33)h,AUC0-∞分别为(11.93±5.02)μg/mL.h和(6.26±1.83)μg/mL.h,CL分别为(0.79±0.24)L/h和(2.83±0.84)L/h。结论:左旋、右旋硫普罗宁在大鼠体内的药动学行为存在一定的差异,左旋、右旋硫普罗宁在体内没有发生对映体间的相互转化,且两个对映体之间没有明显的相互作用。 Aim: To investigate the stereoselective pharmacokinetics of tiopronin enantiomers in rats. Methods: Following iv aministration of racemic-tiopronin and tiopronin enantiomers to rats, ( - )-tiopronin and ( + )-tiopronin, after being extracted from rat plasma, were subjected to pre-columen chiral derivatization, and analyzed by LC-MS.Chromatographic analysis was performed on a Shimadzu VP-ODS C18 column (150 mm × 2.0 mm,5.0 μm) using a mobile phase of methanol/water (containing 0.1 mmol/L NaCl and 5.3 mmol/L formic acid) in a mode of gradient elution at a flow rate of 0.2 mL/min. LC-MS was performed in positive ion mode with selected ion monitoring (SIM). Results: The pharmacokinetic parameters of tiopronin enantiomers after the administration of racemic-tiopronin were estimated as follows: t1/2(1.49±0.57 ) h and (0.58±0.24) h; AUC0-∞ (15.17±5.95)μg/mL·h and (10.52±3.72) μg/mL·h;and CL (1.31 ± 0.70) L/h and (1.79 ± 0.81) L/h for ( - )-tiopronin and ( + )-tiopronin,respectively.The pharmacokinetic parameters of ( - )-tiopronin and ( + )-tiopronin after dosing of tiopronin enantiomers were estimated as follows: t1/2(1.52 ± 0.28 ) h and (0.78 ± 0.33) h;AUC0-∞ (11.93 ± 5.02) μg/mL·h and (6.26 ± 1.83) μg/mL·h; and CL (0.79± 0.24) L/h and (2.83 ± 0.84) L/h, respectively. Conclusion: The findings indicate differences in the pharmacokinetic parameters between ( - ) -tiopronin and ( + )-tiopronin, and non-occurrence of the chiral inversion in rats.Moreover, there is no significant enantiomer/enantiomer interaction when tiopronin is administered in racemic form.
出处 《中国药科大学学报》 CAS CSCD 北大核心 2008年第1期60-63,共4页 Journal of China Pharmaceutical University
基金 江苏省药物代谢动力学重点实验室资助项目(NoBM2001201)~~
关键词 硫普罗宁 立体选择性 LC-MS 药动学 tiopronin stereoselective LC-MS pharmacokinetics
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  • 1Labadarios D, Davis M, Portmann B, et al. Paracetamol-induced hepatic necrosis in the mouse-relationship between covalent binding, hepatic glutathione depletion and the protective effex, t of alpha-mercaptopropionylglycine [ J ]. Biochem Pharmacol, 1977,26 ( 1 ) : 31 - 35.
  • 2Ichida F, Shibasaki K, Takino T, et al. Therapeutic effects of tiopronin on chronic hepatitis: a double-blind clinical study [J]. J Int Med Res, 1982,10(5) :325 - 332.
  • 3Brocks DR, Jamali F. Stereochemical aspects of pharmacotherapy [J]. Pharmacotherapy, 1995,15(5) :551 - 564.

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