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- 2016
PMX-53明胶复合纳米微粒制备及抗炎作用的体外研究
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Abstract:
摘要 目的:探讨PMX-53明胶复合纳米微粒的制备工艺及其抗炎作用。方法:采用两步去溶剂法制备PMX-53明胶复合纳米微粒,SEM观察载药微粒的形态、粒径分布、分散度;高效液相色谱法检测载药微粒包封率、载药量及缓释规律。体外将小鼠巨噬细胞(RAW264.7)与牙龈素共培养模拟炎症环境,观察载药微粒抗炎效果,实验分阴性对照组、牙龈素组、牙龈素+PMX-53(1 mg/L)组及牙龈素+载药微粒(4.17 g/L)组,培养48 h,通过酶联免疫吸附法检测炎症介质IL-1β和IL-6水平。结果:SEM显示PMX-53明胶复合纳米微粒形态圆整,分散度好,直径40～60 nm载药微粒占51.24%,载药量达0.24 mg/g,包封率46.2%,且PMX-53明胶复合纳米微粒药物释放时间达7 d。ELISA检测结果显示,体外细胞培养48 h后,牙龈素组的IL-1β和IL-6分泌量较阴性对照组增加,而牙龈素+PMX-53组和牙龈素+载药微粒组的IL-1β和IL-6分泌量均较牙龈素组减少,其中牙龈素+载药微粒组的IL-6分泌量明显减少。结论:制备的PMX-53明胶复合纳米微粒体外抗炎作用好
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