达托霉素脂质体的制备和体外释放度考察
张登山;刘留成
【期刊名称】《中国药师》 【年(卷),期】2017(020)005
【摘要】Objective: To prepare daptomycin liposomes and investigate the in vitro drug release.Methods: Daptomycin liposomes were prepared by an active loading method.The distribution of particle size and zeta potential of liposomes were determined by a laser particle size analyzer.The encapsulation efficiency and in vitro drug release were determined by HPLC.Results: The particle size of daptomycin liposomes was 109.5 nm, the heterogeneous dispersion coefficient was 0.042 and the zeta potential was-6.48 mV.The entrapment efficiency determined by gel column and centrifugation was 50.8% and 50.3%, respectively.The result of in vitro drug release showed that daptomycin liposomes had a good sustained-release effect when compared with daptomycin for injection.Conclusion: Daptomycin liposomes have uniform particle size, which can release drug slowly to reduce administration frequency.%目的: 制备达托霉素脂质体,并考察其体外释放度.方法: 采用主动载药法制备达托霉素脂质体,激光粒度测定仪测定脂质体的粒度及其分布、Zeta电位,高效液相色谱仪测定包封率和体外释放度.结果: 达托霉素脂质体粒径为109.5 nm,多相分散系数为0.042,Zeta电位为-6.48 mV,凝胶柱法和离心法测得的包封率分别为50.8%和50.3%.体外释放度显示:相比于注射
达托霉素脂质体的制备和体外释放度考察
