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作 者:周莹[1] 何晓梦[1] 李虎群[1] 倪扬[1] 许明珍[1] 黎维勇[1]
机构地区:[1]华中科技大学同济医学院附属协和医院药剂科,武汉430022
出 处:《医药导报》2016年第1期4-7,共4页Herald of Medicine
基 金:国家"重大新药创制"科技重大专项"十二五"计划(2011ZX09302-002-01)
摘 要:目的观察罗氟司特片在健康比格犬体内的药动学特点,比较受试制剂和参比制剂的相对生物利用度。方法健康雄性比格犬6只,随机、交叉、单剂量灌服罗氟司特片受试制剂或参比制剂500μg,采用高效液相色谱-串联质谱(HPLC-MS/MS)法测定血浆罗氟司特浓度,用DAS软件计算药动学参数,比较相对生物利用度。结果罗氟司特受试制剂和参比制剂的主要药动学参数如下:浓度-时间曲线下面积(AUC0-t)分别为(16.33±9.79),(16.21±10.43)μg·h·L-1;AUC0-∞分别为(17.11±10.39),(16.86±10.70)μg·h·L-1;峰浓度(Cmax)分别为(5.07±2.74),(5.39±3.67)μg·L-1;达峰时间(tmax)分别为(1.04±0.51),(0.96±0.56)h;半衰期(t1/2)分别为(1.97±0.65),(2.21±0.72)h。受试制剂对参比制剂的相对生物利用度为(100.9±6.3)%。结论建立的HPLC-MS/MS法适用于罗氟司特片的药动学研究,受试制剂与参比制剂的药动学特征相似。Objective To study the pharmacokinetic characteristics of roflumilast tablets in healthy Beagle dogs and compare relative bioavailability of the test and the reference formulations. Methods Single dose of 500 μg test or reference preparations of roflumilast tablets were orally administered to 6 healthy male Beagle dogs in a randomized,cross-over study.Plasma concentrations were determined by high performance liquid chromatography-tandem mass spectrometry( HPLC-MS / MS) method.The pharmacokinetic parameters were calculated by DAS software and the relative bioavailability was compared. Results The main pharmacokinetic parameters of the test and reference roflumilast tablets were as follows: the area under the concentrationtime curve( AUC0-t) values were( 16.33±9.79) and( 16.21±10.43) μg·h·L^-1,respectively; AUC0-∞values were( 17. 11 ±10.39) and( 16.86± 10. 70) μg·h·L^-1,respectively; the peak concentration( Cmax) values were( 5.07±2.74) and( 5.39±3.67) μg·L^-1,respectively; the times to peak concerntration( tmax) were( 1.04±0.51) and( 0.96±0.56) h,respectively; the half-life( t1 / 2) values were( 1.97± 0.65) and( 2.21± 0.72) h,respectively. The relative bioavailability of the test tablets was( 100.9±6.3) % compared with the reference tablets. Conclusion The established HPLC-MS/MS method is suitable for the pharmacokinetic study of the roflumilast tablets,and the pharmacokinetic characteristics are similar between the test formulation and the reference one.
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