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可控降解抗感染材料的体外释药机制研究
Authors
丁马太
李春艳
+3 more
温志国
胡从从
董声雄
Publication date
20 October 2011
Publisher
Abstract
在前期合成并表征了可控降解抗感染材料环丙沙星聚氨酯(CFPU)的基础上,建立高效液相色谱法(HPLC)测定其体外降解释放抗菌药物环丙沙星的含量;通过制作累积药物释放曲线,考察不同降解介质及其浓度对药物释放的影响;并对累积药物释放曲线进行拟合,研究其体外可控降解的药物释放机制。结果表明建立的HPLC法简单准确可靠。该材料的降解具有生物响应性,且符合一级动力学;药物释放是以Ritger-Pappas方程(0.45<n<0.89)即扩散与骨架溶蚀相结合的机制进行,在无炎症时以扩散为主,而炎症发生时反之,且炎症越严重,骨架溶蚀越占优势
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Last time updated on 16/06/2016