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Study on sustained release characters and mechanism of a tinidazole ointment
Author(s): 
Pages: 2049-2053
Year: Issue:  24
Journal: CHINESE JOURNAL OF NEW DRUGS

Keyword:  替硝唑突释缓释软膏乙基纤维素β-环糊精;
Abstract: 目的:研究替硝唑缓释软膏中药物的释放行为.方法:本研究以替硝唑(Tinidazole,TNZ)为模型药,乙基纤维素(ethyl cellulose,EC),丙烯酸树脂RSPO为骨架材料制备了TNZ缓释软膏,探讨EC-RSPO共混以及β-环糊精(β-cyclodextrin,β-CD)包合TNZ对软膏粘性、硬度、吸水性和微观结构等物理性能及释药行为的影响,阐明软膏物理性能与释药行为的关系.结果:EC对TNZ有良好的缓释作用,与RSPO共混后使得软膏的硬度,粘度下降,吸水量增加,释药孔径增大,TNZ释放速率加快.β-CD包合TNZ能较好地抑制TNZ的突释.结论:以EC为骨架材料,β-CD包合TNZ得到了具有良好缓释性和流变性的TNZ缓释软膏.
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