光交联羧甲基壳聚糖水凝胶的制备及药物缓释性能研究
Preparation of photo-crosslinking carboxymethyl chitosan hydrogel for sustained drug release
查看参考文献32篇
文摘
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羧甲基壳聚糖是一种壳聚糖衍生物,具有良好的生物相容性和可降解性,在生物医药领域具有广泛的应用。本研究合成一种可光交联的水溶性羧甲基壳聚糖衍生物。通过对羧甲基壳聚糖进行双键修饰,合成甲基丙烯酸缩水甘油酯改性的羧甲基壳聚糖(M-CMCS),并通过核磁共振氢谱(1 H-NMR)和傅里叶变换红外光谱(FT-IR)对M-CMCS的结构进行表征。通过光引发M-CMCS交联制备具有不同交联度的M-CMCS水凝胶。通过扫描电子显微镜(SEM)、流变仪和紫外-可见分光光度计(UV-Vis)分别对M-CMCS水凝胶的微观形态、黏弹性能、溶胀性能、酶促降解性能和体外药物释放性能进行了研究。结果表明:随着甲基丙烯酸缩水甘油酯与羧甲基壳聚糖的氨基摩尔比的增加,产物的接枝度逐渐增加。M-CMCS水凝胶具有高度孔隙化且孔隙之间相互连通的结构特点,孔径在1~20μm范围内。随着交联度的增大,M-CMCS水凝胶的溶胀比减小。M-CMCS水凝胶在溶菌酶作用下缓慢降解,随着交联度的增大,降解速率减慢。MCMCS水凝胶对抗癌药物吉西他滨具有缓释作用,药物释放时间可达4天。光交联M-CMCS水凝胶在药物释放及组织工程领域具有重要的应用前景。 |
其他语种文摘
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Carboxymethyl chitosan is an important chitosan derivative with good biocompatibility and degradability,and has a wide range of biomedical applications.In this study,water-soluble carboxymethyl chitosan derivative that can be photo-crosslinked by UV irradiation was synthesized.Methacrylated carboxymethyl chitosan (M-CMCS) was synthesized by N-methacrylation of carboxymethyl chitosan (CMCS).The chemical structures of M-CMCS were characterized by ~~1H NMR and FT-IR.The M-CMCS hydrogels with different degrees of crosslinking was prepared by UV-triggered photo-crosslinking.The microscopic morphology,mechanical properties,swelling properties,enzymatic degradation properties and in vitro drug release behaviors of M-CMCS hydrogels were investigated by SEM,rheometer,and UV-Vis spectroscopy,respectively.The results show that the degree of methacrylation is gradually increased as the molar ratio of glycidyl methacrylate to carboxymethyl chitosan increases.M-CMCS hydrogels have the structure of high porosity and interconnected pores with the pore size of 1-20μm.The swelling ratio of M-CMCS hydrogels is decreased as the degree of crosslinking increases.M-CMCS hydrogel can be slowly degraded by lysozyme,and the degradation rate is decreased by increasing the degree of crosslinking.M-CMCS hydrogels show sustained release behavior for anticancer drug gemcitabine,and the drug release can be extended to 4 days.Photo-crosslinked M-CMCS hydrogels show great promise for drug release and tissue engineering. |
来源
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材料工程
,2020,48(11):76-84 【核心库】
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DOI
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10.11868/j.issn.1001-4381.2020.000025
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关键词
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羧甲基壳聚糖
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水凝胶
;
光交联
;
药物缓释
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地址
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1.
天津科技大学化工与材料学院, 天津, 300457
2.
天津理工大学材料科学与工程学院, 天津, 300457
3.
复旦大学, 聚合物分子工程国家重点实验室, 上海, 200433
4.
天津科技大学, 天津市海洋资源与化学重点实验室, 天津, 300457
5.
天津科技大学, 天津市制浆造纸重点实验室, 天津, 300457
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语种
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中文 |
文献类型
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研究性论文 |
ISSN
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1001-4381 |
学科
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化学 |
基金
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2018年度天津市教委科研计划项目
;
天津市海洋资源与化学重点实验室
;
天津市制浆造纸重点实验室开放基金资助项目
;
国家自然科学基金
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文献收藏号
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CSCD:6863734
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