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Design of intelligent chitosan/heparin hollow microcapsules for drug delivery

机译:智能壳聚糖/肝素中空微胶囊设计的设计

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摘要

In this study, a novel strategy has been developed for the assembly of polyelectrolyte multilayer (PEM) on CaCO3 templates in acidic pH solutions, where consecutive polyelectrolyte layers (heparin/poly(allylamine hydrochloride) or heparin/chitosan) were deposited on PEM hollow microcapsules established previously on CaCO3 templates. The PEM build-up, hollow capsule characterization and successful encapsulation of fluorescein 5(6)-isothiocyanate (FITC)-Dextran by coprecipitation with CaCO3 are demonstrated. Improvement by the removal of CaCO3 core was achieved while the depositions. In the course of the release profile, high retardation for encapsulated FITC-Dextran was observed. The combined shell capsules system is a significant trait that has potential use in tailoring functional layer-by-layer capsules as intelligent drug delivery vehicles where the preliminary in vitro tests showed the responsiveness on the enzymes. (C) 2016 Wiley Periodicals, Inc.
机译:在本研究中,已经开发了一种新的策略,用于组装酸性pH溶液中Caco3模板上的聚电解质多层(PEM),其中沉积在PEM中空微胶囊上的连续聚电解质层(肝素/聚(盐酸盐(盐酸)或肝素/壳聚糖) 以前在Caco3模板上建立。 证明了PEM积聚,中空胶囊表征和荧光素5(6) - 硫氰酸酯(FITC) - 通过CACO3的氯氰酸酯(FITC) - 掺脂盐的成功包封。 通过除去Caco3核心的改善是在沉积的同时实现。 在释放型材的过程中,观察到封装的FITC-葡聚糖的高延迟。 合并的壳胶囊系统是一种重要的特征,具有尺寸仿制功能层胶囊作为智能药物递送载体,其中初步的体外测试显示酶对酶的反应性。 (c)2016 Wiley期刊,Inc。

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