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在评估基基基酸甲基纤维素酸盐无形固体分散物的性能时,媒体选择是否重要?
Pradnya Bapat1, Shubhajit Paul2, Naveen K Thakral2
1Department of Industrial and Physical Pharmacy, College of Pharmacy, Purdue University, West Lafayette, Indiana 47907, United States.
Molecular pharmaceutics
|September 26, 2023
概括
这项研究表明,在无形固体分散物 (ASD) 中,基甲基纤维素酸盐 (HPMCAS) 的溶解率受其溶解度和凝层 pH 的影响,而这种 pH 受缓冲容量和药物存在的影响.
科学领域:
- 制药科学 制药科学
- 聚合物化学 聚合物化学
- 药物输送系统 药物输送系统
背景情况:
- 基甲基纤维素酸盐酸盐 (HPMCAS) 对于无形固体分散 (ASD) 具有至关重要的作用,这是由于其依赖pH的溶解度.
- 超出pH值的溶液特性,如缓冲容量,对HPMCAS在ASD溶解的影响尚未完全理解.
研究的目的:
- 调查自闭症的药物和HPMCAS释放速度限制因素.
- 阐明缓冲容量和药物类型对HPMCAS溶解和凝层特性的影响.
主要方法:
- 使用HPMCAS.CAS使用印梅他辛和印梅他辛甲基的ASDs的配方.
- 在各种介质中测量表面积规范释放率.
- 使用pH敏感染料确定HPMCAS凝层的表面pH值.
- 在ASD中吸收水的重力测量测量.
主要成果:
- 对于整洁的HPMCAS,溶解速率受到界面上的溶解度的限制,受较低的凝层pH值影响,这取决于缓冲容量.
- 在ASD中,HPMCAS释放速率控制药物释放,药物减少聚合物释放,特别是印美甲基.
- 在低缓冲容量介质中,药物对释放率的影响减少,这表明HPMCAS溶解的速度限制步骤发生了变化.
结论:
- 该研究提供了对ASD酸性聚合物溶解的基本见解,考虑了无药和含药系统.
- 了解缓冲容量,凝层pH值和药物存在之间的相互作用是设计自闭症症的关键.
- 结果可以帮助开发更生理相关的*in vivo*溶解测试ASD配方.
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