摘要
为了优化水凝胶的性能,改善水凝胶的药物缓释作用,设计了一种由氧化海藻酸(OSA)交联的海藻酸/明胶(SA/Ge)pH敏感型复合水凝胶,对其进行了红外光谱、XRD、TG分析,测定了水凝胶的溶胀率,探讨了该复合水凝胶体系的释药行为及机制,分析了四种模型方程对药物释放行为的拟合结果.结果表明:该水凝胶体系的溶胀率可达36倍,对大分子药物牛血清白蛋白具有一定的体外缓释效果,它在模拟胃肠液的释药机制属于骨架型扩散机制释放.
To optimize the performance of hydrogels and improve their sustained release effect,a pH-sensitive SA/Ge composite hydrogel crosslinked by OSA was designed.FTIR,XRD,and TG analysis were carried out and the swelling rate of the hydrogel was determined.Drug release behavior and mechanism of the composite hydrogel system were investigated,and the fitting results of four model equations were analyzed.The results showed that the swelling rate of the hydrogel system could reach 36,and showed a certain degree of sustained release effect for the macromolecular drug bovine serum albumin in vitro.The sustained release effect of the composite hydrogel in simulated gastrointestinal tract was attributed to a skeleton diffusion mechanism.
作者
胡燕
胡升
吉木色
张尚文
王欣雅
康丽
HU Yan;HU Sheng;JI Muse;ZHANG Shangwen;WANG Xinya;KANG Li(School of Pharmaceutical Science, South-Central University for Nationalities, Wuhan 430074,China)
出处
《中南民族大学学报（自然科学版）》
CAS
2020年第2期168-173,共6页
Journal of South-Central University for Nationalities：Natural Science Edition
基金
国家自然科学基金资助项目(81401510)
湖北省自然科学基金资助项目(2017CFB414)
中央高校基本科研业务费专项资金资助项目(CZY19030)
中南民族大学研究生教育教学改革项目(YJSJG201703)。
关键词
海藻酸钠
氧化海藻酸钠
明胶
复合水凝胶
缓控释作用
sodium alginate
oxidized sodium alginate
gelatin
composite hydrogel
sustained release effect
