中国肝移植患者服用麦考酚钠肠溶片后霉酚酸及其代谢物的药动学研究  被引量:3

Pharmacokinetics of Mycophenolic Acid and its Metabolites in Chinese Liver Transplant Patients after Administration of Enteric-coated Mycophenolate Sodium( EC-MPS) Tablets

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作  者:夏琴[1,2] 陈冰[2] 刘晓雪[2] 黄菁菁[2] 支建明[1] 

机构地区:[1]上海交通大学医学院生理教研室,上海200025 [2]上海交通大学医学院附属瑞金医院药剂科

出  处:《中国药师》2015年第4期533-537,共5页China Pharmacist

基  金:国家自然科学基金项目(编号:81473275);上海市自然科学基金项目(编号:12ZR1418900)

摘  要:目的:探讨肝移植患者口服麦考酚钠肠溶片(EC-MPS)后不同阶段霉酚酸(MPA)及其代谢物的药动学特征。方法:采集24例肝移植患者服用EC-MPS后第1周和第3周0-12 h血标本,采用LC-MS/MS法测定MPA、7-O-葡萄糖醛酸结合代谢物(MPAG)、酰化葡萄糖醛酸代谢物(Ac MPAG)等血浆中药物浓度,采用非房室法计算药动学参数。结果:服用EC-MPS1周与3周后,MPA的Cmax、AUC0-12、t1/2分别为(18.1±8.75)与(20.7±16.0)μg·ml^-1、(42.7±17.5)与(47.1±23.9)μg·h·ml^-1、(3.33±2.81)与(3.30±1.89)h,其主要药动学参数在第1周与第3周无显著差异;Ac MPAG的Cmax、AUC0-12、t1/2分别为(2.50±1.86)与(1.78±1.72)μg·ml^-1、(14.5±11.7)与(6.97±6.57)μg·h·ml^-1、(4.48±2.53)与(3.76±1.89)h,给药后第1周Ac MPAG的AUC0-12显著高于第3周(P〈0.01);MPAG的Cmax、AUC0-12、t1/2分别为(171.6±135.4)与(152.2±115.9)μg·ml^-1、(1 299±1 204)与(1 051±561)μg·h·ml^-1、(8.73±4.25)与(7.75±2.87)h,其主要药动学参数在第1周与第3周无显著差异。服用吗替麦考酚酯(MMF)与EC-MPS患者的MPA的Cmax、Tmax、t1/2存在显著差异(P〈0.05);治疗3周后代谢物MPAG的Cmax、AUC0-12显著高于服用MMF的患者(P〈0.05)。结论:不同阶段MPA蓄积不明显,但代谢物体内暴露差异明显。与服用MMF的患者相比,EC-MPS吸收延缓,而体内暴露无差异。Objective: To investigate the pharmacokinetics of mycophenolic acid( MPA) and its metabolites in different stages after the administration of enteric-coated mycophenolate sodium( EC-MPS) tablets in Chinese liver transplant recipients. Methods: The blood samples of 24 patients were collected in 0-12 h of the 1stand 3rdweek after the administration of EC-MPS. The concentrations of MPA,Ac MPAG and MPAG in plasma were measured by LC-MS / MS developed in our lab. The pharmacokinetic parameters of MPA and its metabolites were estimated by non-compartmental method. Results: After 1- and 3-week therapy with EC-MPS,Cmax,AUC0-12 and t1 /2was( 18. 1 ± 8. 75) and( 20. 7 ± 16. 0) μg ml^-1,( 42. 7 ± 17. 5) and( 47. 1 ± 23. 9) μg·h·ml^-1,( 3. 33 ± 2. 81) and( 3. 30 ± 1. 89) h for MPA;( 2. 50 ± 1. 86) and( 1. 78 ± 1. 72) μg·ml^-1,( 14. 5 ± 11. 7) and( 6. 97 ± 6. 57) μg·h·ml^-1,( 4. 48 ± 2. 53) and( 3. 76 ± 1. 8) h for Ac MPAG;( 171. 6 ± 135. 4) and( 152. 2 ± 115. 9) μg·ml^-1,( 1299 ± 1 204) and( 1 051± 561) μg·h·ml^-1,( 8. 73 ± 4. 25) and( 7. 75 ± 2. 87) h for MPAG,respectively. There was no significant difference in the PK parameters of MPA after the 1- and 3-week therapy. The Cmax,Tmaxand t1 /2of MPA in the patients received EC-MPS were significantly higher than those in the patients received MMF( P〈0. 05). Cmaxand AUC0-12 of MPAG in the patients received EC-MPS were significantly higher than those in the patients received MMF after the 3-week therapy( P〈0. 05). Conclusion: There is no significant accumulation of MPA after the therapy with EC-MPS at different stages. The absorption of MPA is delayed after the therapy with EC-MPS compared with that with MMF. There is no difference in MPA exposure between EC-MPS and MMF in Chinese liver transplant patients.

关 键 词:麦考酚钠肠溶片 肝移植 药动学 霉酚酸 7-O-葡萄糖醛酸结合代谢物 酰化葡萄糖醛酸代谢物 

分 类 号:R969.1[医药卫生—药理学]

 

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