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甘草酸二铵肠溶片临床药代动力学研究

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摘要 目的研究男性健康志愿者单剂量服用甘草酸二铵肠溶片。其代谢产物甘草次酸体内药代动力学行为。方法健康男性志愿者单剂量口服甘草酸二铵肠溶片150mg,血浆样品经乙酸乙醋提取,进行LC-Ms/MS分析。色谱柱为Agilent ZORBAXSBc18(3.0×100mm,5μm).流动相为甲醇:乙腈:猎畦铵缓冲液(5mmol·L-1醋酸铵,0.2%冰醋酸)(15:60:25,V/v/V),检测离子为m/z469.4/355.2(甘草次酸)、m/z358.9/279.9(内标泼尼松龙)。测定甘草次酸血药浓度,计算其药代动力学参数。结果在1.5~192μg·L-1内,甘草次酸与内标的峰面积比值与浓度的线性关系良好,定量限为1.5μg·L^-1,提取回收率为77.14%~83.6496。人体中甘革次醢药代动力学参数:Cmax为(73.85±25.25)μg·L-1,Tmax为(11.50土3.07)h,T2-1β为(11.82±3.56)h,AuC0~60为(1252.49±489.06)μg/(h·L)。结论建立的LC-MS/Ms分析方法准确灵敏,适于临床药代动力学研究。口服甘草酸二铵肠溶片,其代谢产物甘草次酸在体内的药代动力学特点是达峰时间长,约占受试者总人数50%的药时曲线有双峰现象。
作者 邹永东
出处 《海峡药学》 2013年第1期276-278,共3页 Strait Pharmaceutical Journal
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