从基于HPMCAS的无形固体分散物中探索利托纳维尔的生物相关条件和释放概况
Pradnya Bapat1, Robert Schwabe2, Shubhajit Paul2
1Department of Industrial and Molecular Pharmaceutics, College of Pharmacy, Purdue University, West Lafayette, IN 47907, United States.
Journal of pharmaceutical sciences
|August 26, 2024
概括
开发无形固体分散 (ASD) 的生物相关释放试验至关重要. 缓冲区的选择显著影响药物释放,表面pH值差异解释了不同的释放率,并影响了生物可访问性评估.
科学领域:
- 制药科学 制药科学
- 药物运输 药物运输 药物运输
- 制定 发展 制定 发展
背景情况:
- 无形固体分散 (ASDs) 需要在体内预测释放测试以进行早期配方优化.
- 在ASD中肠道聚合物需要仔细考虑缓冲性质,以便进行准确的释放测试.
- 基甲基纤维素酸盐酸盐 (HPMCAS) 是一种常用于ASD配方的肠道聚合物.
研究的目的:
- 开发一种在体内预测性释放测试,用于含有HPMCAS和利托纳维尔的ASD.
- 研究缓冲型 (酸盐与二碳酸盐) 和度对自闭症药物释放的影响.
- 通过使用微型TIM仪器评估从ASDs里托纳维尔的生物可访问性,并将其与晶体里托纳维尔进行比较.
主要方法:
- 准备了ASD配方,其中HPMCAS和里托纳维尔的药物负载为20%.
- 药物释放研究在酸盐和二碳酸盐缓冲器中进行,度不同,pH值为6.5.
- 在固体:溶液接口的表面pH值使用pH值敏感的光探针进行测量.
- 使用微型TIM体外消化模型评估了生物可访问性.
主要成果:
- 药物和HPMCAS聚合物释放是一致的,表明聚合物控制的药物释放.
- 释放速度因缓冲组合而有显著差异;在10毫米二碳酸盐中最慢,在20-50毫米酸盐缓冲中更快.
- 一个10毫米的二碳酸盐缓冲缓冲释放配置与一个5毫米的酸盐缓冲相匹配.
- 与散装溶液相比,溶解界面的较低表面pH解释了观察到的释放速率差异.
- 里托纳维尔在微小的TIM系统中表现出高的自闭症生物可访问性,与晶体里托纳维尔不同.
结论:
- 缓冲性质,特别是表面pH值,极大地影响HPMCAS基ASD药物释放.
- 对ASD的生物相关释放测试需要仔细选择缓冲系统,以确保体内可预测性.
- 微型TIM模型表明,与晶体形式相比,在自闭症患者中,利托纳维尔的生物可访问性优越.
- 进一步开发量身定制的生物相关测试对于有效的ASD配方评估至关重要.
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