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改善蛋白质药物PELA控释微球释放性能的研究
Authors
夏新
孟凡涛
+3 more
李玲玲
苏志国
马光辉
Publication date
1 January 2005
Publisher
Abstract
开展了以乙酸乙酯(EA)与二氯甲烷(MC)的混合溶液为有机溶剂、以单甲氧基聚乙二醇-聚-DL-乳酸(PELA)为膜材的W/O/W复乳。分步固化法制备蛋白质药物控释微球的研究。为解决微球突释率高、且突释后的释药速度缓慢的问题,实现后期快速释放,以溶茵酶为模型蛋白,重点考察了膜材组成、内水相体积以及外水相盐浓度对微球释药速率的影响。结果表明,当外水相盐浓度增大至1.5%时可将释放率由22%提升至45%,是一种较好的加快微球释药速率的途径,因此可通过选择适当的外水相盐浓度,达到所期望的药物释药速率
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Last time updated on 05/12/2019