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效应面法优化吲哚美辛自HPMC/果胶/氯化钙骨架片的双相释放

吴宝剑, 魏秀莉, 卢懿, 吴伟*
  

  1. 复旦大学 药学院 药剂学教研室, 上海 200032
  • 收稿日期:2008-07-21 修回日期:2008-11-10 出版日期:2008-12-15 发布日期:2008-12-15
  • 通讯作者: 吴伟*

Optimization of the biphasic release of indomethacin from HPMC/pectin/calcium chloride matrix tablet by response surface methodology

Bao-Jian Wu, Xiu-Li Wei, Yi Lu, Wei Wu*
  

  1. Department of Pharmaceutics, School of Pharmacy, Fudan University, Shanghai 200032, China
  • Received:2008-07-21 Revised:2008-11-10 Online:2008-12-15 Published:2008-12-15
  • Contact: Wei Wu*

摘要:

考察HPMC/果胶/氯化钙骨架片中两个自变量果胶/氯化钙重量比和骨架总重量对吲哚美辛释放的影响。采用二因素五水平星点设计, 效应面法优化Peppas方程拟合参数nKT0.1 (10%释放时间)。自变量对双相释放参数nK值有显著影响, nKT0.1值可用二次多项式拟合, 线性拟合效果不佳。数学模型拟合和效应面结果表明果胶/氯化钙重量比和骨架总重量两个因素间有显著交互作用。在具有较大nT0.1值和较小K值的优化处方中, 其果胶/氯化钙的比例约为1.0, 骨架总重量处于中间值, 200 mg。优化处方具有很好的预测性, nKT0.1值的预测偏差介于-7.33%6.26%之间。星点设计可用于优化和预测药物从HPMC/果胶/氯化钙骨架片的释放。

关键词: 药物释放, 药物释放, 药物释放, 优化, 优化, 优化, 效应面, 效应面, 效应面, 吲哚美辛, 吲哚美辛, 吲哚美辛, 果胶, 果胶, 果胶, 骨架, 骨架, 骨架, , ,

Abstract: We studied the effect of two independent variables, the pectin/calcium chloride weight ratio and the overall matrix weight in HPMC/pectin/calcium matrix tablet, on the release of indomethacin. A two-factor 5-level central composite experimental design was employed. Responses of the Peppas correlation parameters n and K and the 10% release time (T0.1) were optimized by response surface methodology. Significant effect of the independent variables on the biphasic release parameters, n and K, was observed. N, K and T0.1 were well fitted with the second-order quadratic equations rather than linear equations. Moreover, the mathematic fitting and the response surfaces showed significant cross-interaction between the pectin/calcium chloride ratio and the overall matrix weight. The optimal formulation with larger n, longer T0.1 and smaller K consisted of medium pectin/calcium chloride ratio around 1.0 and medium matrix weight around 200 mg. Validation studies on the optimal formulations showed good predictability of the n, K and T0.1 values with biases within the range of -7.33% and 6.26%. Our results support that central composite design can be used to optimize drug release from HPMC/pectin/calcium matrix tablet with high predictability.

Key words: Drug release, Drug release, Optimization, Optimization, Response surface, Response surface, Indomethacin, Indomethacin, Pectin, Pectin, Matrix, Matrix, ,

Supporting: Foundation item: Shanghai Municipal Committee of Science and Technology (Grant No. 024319114).
*Corresponding author. Tel.: 86-21-54237833