摘要
目的:研究甲钴胺在健康人体内的药动学和生物等效性。方法:采用自身交叉三周期的实验设计,19名健康受试者分别口服两种甲钴胺制剂1.5 mg后,采用化学发光微粒子免疫法测定血清中甲钴胺的浓度,DAS 3.0软件计算药动学参数,进行等效性评价。结果:受试制剂和参比制剂的甲钴胺药动学参数:tmax分别为(4.2±1.9)h和(4.4±2.4)h,Cmax分别为(322.0±145.4)ng·L-1和(282.2±108.1)ng·L-1,t1/2分别为(19.2±5.3)h和(20.0±6.3)h,AUC0-72分别为(6769.1±2169.4)ng·h·L-1和(6400.6±1921.5)ng·h·L-1,AUC0-∞分别为(7334.2±2376.5)ng·h·L-1和(6992.4±2076.1)ng·h·L-1,受试制剂的相对生物利用度F(0-72)为105.9%±13.2%,F(0-∞)为104.9%±12.6%。结论:本试验建立的血清甲钴胺浓度测试方法简便、准确,两种制剂生物等效。
Objective: To develop a chemiluminescent microparticle immunoassay (CMIA) method for the determination of meco- balamin in human serum to investigate the pharmacokinetics and bioequivalence of meeobalamin. Methods: A single oral dose of two kinds of meeobalamin was given to 19 healthy volunteers in a randomized three-period crossover study. The concentrations of mecobal- amin in serum were assayed by CMIA, the main pharmaeokinetic parameters were analyzed by DAS 3.0 software, and the bioequiva- lenee was evaluated. Results: The main pharmaeokinetic parameters of test and reference mecobalamin tablets were as follows: tmax were (4.2± 1.9)h and (4.4 ±2.4)h,Cmax were (322.0 ± 145.4) ng . L^-1 and (282.2 ±108.1) ng . L^-1 ,t1/2 were (19.2 ±5.3) hand (20.0±6.3)h,AUC0-72were (6769.1±2 169.4) ng.h. L^-1and (6400.6±1 921.5) ng. h. L^-1.F(0-72) and F(0-∞) of the test tablets was 105.9% ± 13.2% and 104.9% ± 12.6% ,respectively; Conclusion: The method is simple and precise. The two tablets are bioequivalent.
出处
《中国药师》
CAS
2014年第10期1619-1622,共4页
China Pharmacist