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Studies on Dissolution Enhancement of Prednisolone a Poorly Water-Soluble Drug by Solid Dispersion Technique

机译:固体分散技术提高水溶性差的药物泼尼松龙的溶出度研究

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摘要

>Introduction: Prednisolone is a class II substance according to the Biopharmaceutics Classification System. It is a poorly water soluble agent. The aim of the present study was to improve dissolution rate of a poorly water-soluble drug, prednisolone, by a solid dispersion technique. >Methods: Solid dispersion of prednisolone was prepared with PEG 6000 or different carbohydrates such as lactose and dextrin with various ratios of the drug to carrier i.e., 1:10, 1:20 and 1:40. Solid dispersions were prepared by coevaporation method. The evaluation of the properties of the dispersions was performed using dissolution studies, Fourier-transform infrared spectroscopy and x-ray powder diffractometery. >Results: The results indicated that lactose is suitable carriers to enhance the in vitro dissolution rate of prednisolone. The data from the x-ray diffraction showed that the drug was still detectable in its solid state in all solid dispersions except solid dispersions prepared by dextrin as carrier. The results from infrared spectroscopy showed no well-defined drug–carrier interactions for coevaporates. >Conclusion: Solid dispersion of a poorly water-soluble drug, prednisolone may alleviate the problems of delayed and inconsistent rate of dissolution of the drug.
机译:>简介:根据生物制药分类系统,泼尼松龙是II类物质。它是水溶性差的试剂。本研究的目的是通过固体分散技术提高水溶性差的药物泼尼松龙的溶出度。 >方法:泼尼松龙的固体分散体是用PEG 6000或不同碳水化合物(如乳糖和糊精)以药物与载体的不同比例(即1:10、1:20和1:40)制备的。通过共蒸发法制备固体分散体。使用溶解度研究,傅立叶变换红外光谱和X射线粉末衍射仪对分散体的性能进行评估。 >结果:结果表明,乳糖是提高泼尼松龙体外溶出度的合适载体。来自x射线衍射的数据表明,除了以糊精为载体制备的固体分散体以外,在所有固体分散体中仍可检测到该药物的固态形式。红外光谱的结果表明,共蒸发没有明确定义的药物-载体相互作用。 >结论:泼尼松龙是水溶性差的药物的固体分散体,可以缓解药物溶解速度延迟和不一致的问题。

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