AIM To prepare oral colon-specific metronidazole microsphere delivery system. METHODS Metronidazole microspheres were prepared with Quasi-emulsion method, and the colon site-specific delivery prescription and preparat...AIM To prepare oral colon-specific metronidazole microsphere delivery system. METHODS Metronidazole microspheres were prepared with Quasi-emulsion method, and the colon site-specific delivery prescription and preparation optimized with fractional factorial design. RESULTS The drug loading of colon site-specific delivery metronidazole microspheres was (39 94±0 15)%, and release fraction 71 78% in an artificial colon solution. CONCLUSION Optimized by fractional factorial design metronidazole microspheres possess the characteristics of a colon site-specific delivery system that delivers its most part in an artificial solution.展开更多
目的优化双氯芬酸钾口腔黏附片处方。方法采用32满因子设计试验考察因素A(卡波姆和羟丙甲基纤维素的总量在处方中所占的比例)和因素B(卡波姆与羟丙甲基纤维素的质量比)对黏附时间和体外30、180、480 m in的累积释放度的影响,试验数据分...目的优化双氯芬酸钾口腔黏附片处方。方法采用32满因子设计试验考察因素A(卡波姆和羟丙甲基纤维素的总量在处方中所占的比例)和因素B(卡波姆与羟丙甲基纤维素的质量比)对黏附时间和体外30、180、480 m in的累积释放度的影响,试验数据分别采用线性方程和二次多项式拟合,根据最佳数学模型绘制效应面和等高线图,通过重叠等高线图确定最优处方。结果2个影响因素和4个评价指标之间存在定量关系,最优处方:卡波姆和羟丙甲基纤维素的总量在处方中占30%,卡波姆与羟丙甲基纤维素的质量比为0.75∶1。优化处方各指标的预测值和目标值较接近。结论采用因子设计-重叠等高线图法完成了双氯芬酸钾口腔黏附片的多目标同步优化。展开更多
文摘AIM To prepare oral colon-specific metronidazole microsphere delivery system. METHODS Metronidazole microspheres were prepared with Quasi-emulsion method, and the colon site-specific delivery prescription and preparation optimized with fractional factorial design. RESULTS The drug loading of colon site-specific delivery metronidazole microspheres was (39 94±0 15)%, and release fraction 71 78% in an artificial colon solution. CONCLUSION Optimized by fractional factorial design metronidazole microspheres possess the characteristics of a colon site-specific delivery system that delivers its most part in an artificial solution.
文摘目的优化双氯芬酸钾口腔黏附片处方。方法采用32满因子设计试验考察因素A(卡波姆和羟丙甲基纤维素的总量在处方中所占的比例)和因素B(卡波姆与羟丙甲基纤维素的质量比)对黏附时间和体外30、180、480 m in的累积释放度的影响,试验数据分别采用线性方程和二次多项式拟合,根据最佳数学模型绘制效应面和等高线图,通过重叠等高线图确定最优处方。结果2个影响因素和4个评价指标之间存在定量关系,最优处方:卡波姆和羟丙甲基纤维素的总量在处方中占30%,卡波姆与羟丙甲基纤维素的质量比为0.75∶1。优化处方各指标的预测值和目标值较接近。结论采用因子设计-重叠等高线图法完成了双氯芬酸钾口腔黏附片的多目标同步优化。