布洛芬分散片的制备及其在家兔体内的生物利用度研究

Preparation and bioavailability of ibuprofen dispersible tablet in rabbits

目的 :制备布洛芬分散片并与市售片剂比较在家兔体内的药代动力学和生物利用度。方法 :通过因素考察和正交设计制定处方 ,并采用 HPL C法测定血药浓度。结果 :优化处方符合设计要求 ,其药代动力学符合一室开放模型。布洛芬分散片和对照药品布洛芬普通片的 cmax分别为 ( 9.79± 2 .2 5 )和 ( 4.5 4± 1.5 0 ) μg/ ml;tmax分别为 ( 0 .2 7± 0 .0 7)和 ( 2 .0 3± 0 .5 3) h;t1 /2分别为 ( 6 .6 5± 2 .14)和 ( 9.17± 4.38) h;AU C0 -∞ 分别为 ( 94.11± 2 8.38)和 ( 6 5 .2 0± 18.38) μg· h· m l- 1。布洛芬分散片对普通片的相对生物利用度为 16 4.11%。 结论 :布洛芬分散片服用方便 ,吸收迅速 ,其生物利用度显著优于普通片。

Objective: To prepare ibuprofen dispersible tablet and compare its pharmacokinetics and bioavailability with market tablets in rabbits. Methods: According to inspection of factors and orthogonal design, optimal formulation was decided. A randomized crossover and self control design was used. Eight healthy rabbits were single oral dosed with 100 mg ibuprofen dispersible tablet or market tablet, respectively. The plasma drug concentration was determined by HPLC method. The pharmacokinetic parameters were calculated by 3P87 program and the bioequivalence was assessed by NDST5.0 program. Results: A one compartment open model was adopted and the pharmacokinetic parameters of dispersible tablet and market tablet were as follows: c max were (9.79±2.25) and (4.54±1.50) μg/ml; t max were (0.27±0.07) and (2.03±0.53) h; t 1/2 were (6.65± 2.14) and (9.17±4.38) h; AUC 0~∞ were (94.11±28.38) and (65.20±18.38) μg·h·ml -1 , respectively. Ralative bioavailability of the dispersible tablet was 164.11% compared to market tablet. Conclusion: Ibuprofen dispersible tablet is administrated easily and absorbed quickly, and its bioavailability is far more better than the market one. [