首页> 美国卫生研究院文献>Iranian Journal of Pharmaceutical Research : IJPR >A New Crystal Engineering Technique for Dissolution Enhancement of Poorly Soluble Drugs Combining Quasi-emulsion and Crystallo-co Agglomeration Methods
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A New Crystal Engineering Technique for Dissolution Enhancement of Poorly Soluble Drugs Combining Quasi-emulsion and Crystallo-co Agglomeration Methods

机译:一种新的溶解性溶解性药物溶解药物结合结晶和晶体共凝聚方法的新晶体工程技术

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摘要

A target of best dissolution improvement of poorly soluble drugs is a necessity for the success of formulation in industry. The present work describes the preparation, optimization, and evaluation of a new spherical agglomeration technique for glimepiride as a model of poorly soluble drugs. It involved the emulsification of a drug solution containing a dispersed carrier that tailors the crystal habit of the drug to a perfect spherical geometry, in a poor solvent containing a hydrophilic polymer which imparts sphericity and strength to the formed agglomerates. The FTIR peaks of optimized product did not show any sign of chemical interaction between the drug and adsorbed carrier. The DSC and X ray diffractogram showed a peak characteristic of spherical agglomerates with much less intensity than that of glimepiride. The dissolution t1/2 of the drug slightly decreased from 381 min to 334 min in plain agglomerates. Introducing polymers in the aqueous phase of emulsion led to an improvement in the dissolution, reflected in t1/2 ranging from 118 to 231 min. Agglomerates prepared with Starlac/PVP demonstrated the most optimum physicochemical characteristics being spherical, with the best flowability and packability parameters. The t1/2 was as short as 19 min. The new carrier/polymer system offered a synergistic combination that highly contributed in dissolution enhancement of glimepiride. The spheronization and amorphisation offered by the new technique could account for such improvement.
机译:最佳溶解的目标是难以溶于溶于药物的最佳溶解性,是工业中配方成功的必要性。本作者描述了一种新的胶石素凝聚技术的制备,优化和评价,作为胶质脂蛋白的新的球形聚集技术,作为可溶性药物差的模型。它涉及含有分散载体的药物溶液的乳化,其在含有亲水性聚合物的不良溶剂中将药物的晶体含量定制到完美的球形几何形状中,该溶剂赋予形成的聚集体的球状和强度。优化产品的FTIR峰未显示药物和吸附载体之间的化学相互作用的任何迹象。 DSC和X射线衍射图显示了球形附聚物的峰值特征,其强度远小于胶质脂素。药物的溶解T1 / 2在普通附聚物中从381分钟略微降低至334分钟。在乳液的水相中引入聚合物导致溶解的改善,在118至231分钟的T1 / 2中反映。用STARLAC / PVP制备的附聚物证明了最佳的物理化学特性是球形的,具有最佳的流动性和衣物性参数。 T1 / 2短至19分钟。新的载体/聚合物体系提供了一种协同组合,其高度促进了胶合素的增强。新技术提供的球形和无制可以解释这种改进。

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