人血浆中依普利酮的LC-MS/MS测定研究  被引量:3

Determination of eplerenone in human plasma by LC-MS/MS

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作  者:陈静[1] 潘春燕[1] 王璐[1] 马鹏程 杭太俊[1] 宋敏[1] 

机构地区:[1]中国药科大学药物分析教研室,南京210009 [2]中国医学科学院皮肤病医院,南京210042

出  处:《药物分析杂志》2016年第11期1925-1930,共6页Chinese Journal of Pharmaceutical Analysis

摘  要:目的:建立测定人血浆中依普利酮浓度的LC-MS/MS方法,并应用于依普利酮片在中国健康人体内的药动学研究。方法:血浆采用EDTANa_2作为稳定剂,并用预冰水浴冷却乙腈沉淀蛋白处理样品;以0.05%甲酸0.1%醋酸铵溶液-0.05%甲酸甲醇溶液为流动相,线性梯度洗脱,采用Wondasil-C_(18)色谱柱(4.6 mm×150 mm,5μm)进行分离;多反应离子监测[M+H]^+离子通道分别为m/z 415.2→m/z 163.1(依普利酮)、m/z 433.2→m/z 337.4(依普利酮酸)和m/z 393.1→m/z 355.1(内标地塞米松)。结果:建立的LC-MS/MS法测定血浆中依普利酮质量浓度在10.00~2 500 ng·mL^(-1)范围内线性关系良好,最低定量限为10.00 ng·mL^(-1),经方法验证符合生物样本分析的要求。12名受试者单次给药25、50、100 mg依普利酮后,C_(max)分别为(505.7±133.1)、(946.6±226.3)、(1 847±433)ng·mL^(-1),T_(max)分别为(1.3±0.5)、(1.3±0.8)、(1.6±0.8)h,t_(1/2)分别为(2.8±0.8)、(2.9±0.8)、(3.3±0.7)h,AUC_(0-24)分别为(2 310±728)、(4 889±1 808)、(9 691±2 733)ng·h·mL^(-1),AUC_(0-∞)分别为(2 395±749)、(5 051±1 789)、(9 788±2 751)ng·h·mL^(-1)。结论:建立的血浆中依普利酮LC-MS/MS测定法可用于依普利酮的临床药动学研究。Objectiv eplerenone in human e: To establish an LC-MS/MS method for the determination and pharmacokinetic study of plasma. Methods: EDTANa2 was added in plasma samples to alleviate the interconversion between eplerenone and eplerenone acid. The samples were separated by Wondasil-C18 ( 4.6 mm ×150 mm, 5 μm ) column with a linear gradient elution of a mobile phase consisting of 0.1% ammonium acetate solution and methanol both containing 0.05% formic acid after protein precipitation by chilly acetonitrile. The analytes were detectedby multiple reaction monitoring of the [ M+H]+ ions with transitions of m/z 415.2 → m/z 163.1, m/z 433.2 → m/z 337.4 and m/z 393.1 → m/z 355.1 for eplerenone, eplerenone acid and dexamethasone, respectively. Results: The established LC-MS/MS method showed good linearity within the concentration range of 10.00-2 500 ng. mL-1 with a LLOQ of 10.00 ng. mL-1 for eplerenone in human plasma. The method validation met the eriteria for bio-samples determination. The main pharmaeokinetic parameters of single-dose of 25,50 and 100 mg of eplerenone in 12 volunteers were as follows : Cmax ( 505.7 ± 133.1 ), ( 946.6 ± 226.3 ) and ( 1 847 ± 433 ) ng. mL-1, Tmax ( 1.3 ± 0.5 ), ( 1.3± 0.8 ) and ( 1.6± 0.8 ) h, t1/2 ( 2.8 ± 0.8 ), ( 2.9 ± 0.8 ) and ( 3.3 ± 0.7 ) h, AUC0-24 ( 2 310 ± 728 ), ( 4 889± 1 808 ) and ( 9 691 ±2 733 ) ng.h.mL-1, AUC0-∞ ( 2 395 ± 749 ), ( 5 051 ± 1 789 ) and (9 788 ± 2 751 )ng. h. mL-1, Conclusion: The established LC-MS/MS method ean be applied in the pharmaeokinetic study of eplerenone.

关 键 词:醛固酮受体拮抗剂 依普利酮 依普利酮酸 地塞米松内标 血浆样品测定 人体药代动力学研究 液相色谱-串联质谱法 

分 类 号:R917[医药卫生—药物分析学]

 

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