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首页> 外文期刊>Journal of Microencapsulation: Microcapsules Liposomes Nanoparticles Microcells Microspheres >Effects of different cyclodextrins on the morphology,loading and release properties of poly (DL-lactide-co-glycolide)-microparticles containing the hypnotic agent etizolam
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Effects of different cyclodextrins on the morphology,loading and release properties of poly (DL-lactide-co-glycolide)-microparticles containing the hypnotic agent etizolam

机译:不同环糊精对含有催眠药依替拉姆的聚(DL-丙交酯-共-乙交酯)-微粒的形态,负载和释放特性的影响

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摘要

The aim of this study was to gain insight into the feasibility of using microparticles (MPs) constituted by the biodegradable poly (DL-lactide-co-glycolide) (PLGA) and a number of cyclodextrins (CDs) as an orally sustained delivery system of the hypnotic agent etizolam (ETZ).A further aim of the work was to investigate the effects of different CDs on the morphology,loading,and release properties of the MPs prepared.For these purposes,ETZ alone,and ETZ/CD-PLGA loaded MPs were prepared by the W/O/W emulsion-solvent evaporation method.It was found that the release of ETZ in vitro was more prolonged over three days with a kinetic constant proportional to t~(1/2).It was also demonstrated that the CDs in these MPs are able to modulate several properties such as morphology,drug loading,and release properties.In fact,marked differences in shape,surface,and encapsulation efficiencies were noted depending on the presence,hydrophilicity,and charge of the CD employed.The obtained results induce us to consider the present ETZ-containing formulations as new valuable tools for the treatment of different insomnia categories.
机译:这项研究的目的是了解使用由可生物降解的聚(DL-丙交酯-共-乙交酯)(PLGA)和许多环糊精(CD)构成的微粒(MPs)作为口服持续给药系统的可行性。这项工作的另一个目的是研究不同CD对制备的MP的形态,负载和释放特性的影响。为此,单独使用ETZ和负载ETZ / CD-PLGA用W / O / W乳液-溶剂蒸发法制得MPs,发现ETZ的体外释放时间延长了三天,动力学常数与t〜(1/2)成正比。这些MP中的CD能够调节多种特性,例如形态,药物装载和释放特性。实际上,根据CD的存在,亲水性和电荷,它们在形状,表面和包封效率方面存在明显差异。就业。获得的结果诱使我们考虑将当前含ETZ的制剂作为治疗不同失眠类别的新的有价值的工具。

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