摘要
以烟酸和辛伐他汀为模型药物制备复方双层缓释片,并评价其体外释放特性。采用双周期双交叉给药方案,LC-MS/MS法同时测定自制制剂和市售制剂中烟酸和辛伐他汀的血药浓度,对6只Beagle犬进行了药代动力学和生物利用度的初步研究。自制制剂和市售制剂给药后烟酸的cmax分别为(6.43±0.80)和(6.38±0.47)μg/mL,tmax分别为(2.80±1.00)和(2.50±1.00)h,AUC分别为(30.16±4.51)和(27.49±4.04)μg.h/mL;辛伐他汀的cmax分别为(38.65±1.71)和(40.54±2.33)ng/mL,tmax均为(1.50±0.40)h,AUC分别为(118.76±11.83)和(115.76±5.46)ng.h/mL。结果表明两种制剂中烟酸和辛伐他汀的AUC,cmax和tmax都等效,说明自制制剂和市售制剂在Beagle犬体内具有生物等效性。
Compound nicotinic acid extended-release and simvastatin immediate-release double-layer tablets were developed and their in vitro release characteristics were evaluated.The LC-MS/MS method was established for the determination of the concentration of nicotinic acid and simvastatin in blood and investigate the pharmacokinetics and relative bioavailability in 6 Beagle dogs with the double-period and double-crossover dosage regimen.After oral administration of the test and reference tablets,cmax of nicotinic acid was(6.43±0.80) and(6.38±0.47) μg/mL;tmax was(2.80±1.00) and(2.50±1.00) h;AUC was(30.16±4.51) and(27.49±4.04) μg ·h/mL,respectively.cmax of simvastatin was(38.65±1.71) and(40.54±2.33) ng/mL;tmax was(1.50±0.40) and(1.50±0.40) h,AUC was(118.76±11.83) and(115.76±5.46) ng ·h/mL,respectively.Statistical analysis indicated that AUC,cmax and tmax of test preparations were equivalent to reference preparations.So it is bioequiavailability between the test and reference preparations in Beagle dogs.
出处
《中国药科大学学报》
CAS
CSCD
北大核心
2012年第6期508-513,共6页
Journal of China Pharmaceutical University
基金
国家"重大新药创制"科技重大专项资助项目(No.2009ZX09310-004)
教育部新世纪优秀人才支持计划资助项目(No.NCET-08-0846)
中央高校基本科研业务费专项基金资助项目(No.JKZ2009009)~~
关键词
烟酸
辛伐他汀
双层缓释片
药代动力学
生物利用度
nicotinic acid
simvastatin
double-layer extended-release tablets
pharmacokinetics
bioavailability