碱性成纤维细胞生长因子缓释微球的制备及其性质研究
Study on the controlled release nlicrospheres of basic fibroblast growth factor
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关键字:碱性成纤维细胞生长因子;微球;缓释
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中文摘要
目的 通过碱性成纤维细胞生长因子(bFGF)缓释微球的制备研究,为bFGF的缓释制剂提供科学依据。方法 以聚乳酸-聚乙二醇共聚物为包裹材料,采用复乳包囊法制备bFGF-聚乳酸-聚乙二醇共聚物缓释微球,并对微球的形态学、粒径分布、载药量、包封率和体外释药等进行研究。结果 所制备的微球表面光滑圆整,球体均匀度好;微球平均粒径为1.543±0.070 μm,平均径距为1.273±0.08;载药量和包封率分别为0.0267%和65.32%;微球的体外释药过程较为稳定,两周释药率为59.98%。结论 bFGF缓释微球比bFGF有明显的缓释作用。
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