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作 者:董艳[1,2] 曾勇[2] 高晶[2] 伊秀林[2] 慈小燕[2] 李薇[2] 魏滋鸿 武卫党[2] 李亚卓[2] 徐为人[2] 江立新 孙磊 周伟
机构地区:[1]天津医科大学药学院,天津300070 [2]天津药物研究院有限公司释药技术与药代动力学国家重点实验室,天津300193 [3]合肥天麦生物科技发展有限公司,合肥230601
出 处:《中国新药杂志》2015年第22期2555-2559,2598,共6页Chinese Journal of New Drugs
基 金:国家"重大新药创制"科技重大专项(2012ZX09304002)
摘 要:目的:研究国产精蛋白重组人胰岛素(isophane protamine recombinant human insulin)注射液(试验制剂)与进口精蛋白锌重组人胰岛素(protamine zinc recombinant human insulin)注射液(商品名:优泌林NPH,参比制剂)在Beagle犬体内的药动学及生物等效性。方法:采用单剂量自身双交叉给药方案,12只健康Beagle犬分别皮下注射同剂量精蛋白重组人胰岛素注射液和优泌林NPH,给药前和给药后不同时间采集血浆标本,同时同步测定动物血糖水平。放射免疫分析(RIA)法检测血药浓度;血药浓度数据用DAS2.0药动学软件拟合计算参数,并进行生物等效性分析;血糖浓度数据用成对t检验进行分析。结果:12只Beagle犬交叉皮下注射试验制剂与参比制剂每只5 IU后计算得到的主要药动学参数分别是:平均t1/2为(1.82±0.503)和(1.80±1.02)h;平均Cmax为(34.8±11.3)和(33.7±12.9)μU·m L^-1;平均Tmax为(1.63±0.311)和(1.67±0.537)h;平均AUC(0~t)为(106±15.7)和(106±17.4)μU·m L^-1·h^-1。血浆最低葡萄糖浓度(Cmin)分别为(1.43±0.374)和(1.43±0.352)mmol·L^-1,达到最低浓度所需时间(Tmin)分别为(2.46±0.582)和(2.67±0.492)h。结论:精蛋白重组人胰岛素与优泌林NPH在Beagle犬体内具有生物等效性。Objective: To investigate the pharmacokinetic and bioequivalence of the domestic (isophane protamine recombinant human insulin, test preparation) and the reference preparation (protamine zinc recombinant human insulin, Humulin NPH) in Beagle dogs. Methods: Twelve Beagle dogs were assigned into two groups, and were separately administered with single injection of isophane protamine recombinant human insulin and Humu- lin NPH at the same dose according to a randomized two-phase crossover design. The plasma were sampled at de- signed time-points before and after subcutaneous administration. The blood glucose levels were determined by Roche Glucose meter synchronously. A radioimmunoassay (RIA) method was used to determine me coneentration of blood insulin. The pharmacokinetic parameters were calculated by DAS 2.0 software. Results: Beagle dogs were treated with single administration of test and reference preparations at 5 IU peranimal. The main pharmacokinetics parameters of test and reference preparations were as follows: elimination half-life ( t1/2 ) , ( 1. 82 ± 0. 503 ) and (1.80 ±1.02) h; peak concentration (C ), (34.8 ±11.3) and (33.7 ±12.9)μU·m L^-1 ; peak time (Tmax) , (1.63 ±0.311) and (1.67 ±0.537) h; area under the concentration-time curve AUC(0-1), (106±15.7) and ( 106 ± 17.4) μU·m L^-1·h^-1 , respectively. The minimum blood glucose levels (Cmax) were ( 1.43 ±0. 374) and (1.43 ± 0. 352) mmol·L^-1, and the Train (time to reach minimum blood glucose levels) were (2.46 ± 0. 582) and (2.67 ± 0. 492) h in dogs with test and the reference preparations, respectively. Conclusion: The test and reference preparations meet the regulatory criteria for the pharmacokinetic equivalence.
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