【摘要】 目的制备胸腺五肽多囊脂质体,并考察其包封率和体外释放情况。方法采用复乳法制备胸腺五肽多囊脂质体,并用单因素、正交实验对处方进行优化。结果制备的胸腺五肽多囊脂质体的外观圆整均匀,形态良好,包封率为80.15%±3%。体外释放的零级动力学方程为:Y=0.536X+20.431(r2=0.9814),132 h的累积释放率为92.01%。结论复乳法制备的胸腺五肽多囊脂质体的工艺可行,包封率较高,有明显的缓释特征。更多还原

【Abstract】 OBJECTIVE To prepare Thymopentin multivesicular liposomes and investigate the encapsulation efficiency and drug release profile in vitro.METHODS Thymopentin multivesicular liposomes were prepared by double emulsion process,then,the formulation was optimized by single factor and orthogonal design experiments.RESULTS Thymopentin multivesicular liposomes seemed round,well-distributed and had good appearances.The encapsulation efficiency was 80.15%±3%.The release kinetics was characterized by zero-order equation:Y=0.536X+20.431(r2=0.9814),and the cumulative release of multivesecular was 92.01% within 132 h.CONCLUSION It is effective to use double emulsion method,and Thymopentin multivesecular liposomes show high encapsulation efficiencies and significant sustained release properties.更多还原