无形固体分散水界面层的热力学建模及其对释放机制的影响
Stefanie Dohrn1, Samuel O Kyeremateng1, Esther Bochmann1
1AbbVie Deutschland GmbH & Co. KG, Global Pharmaceutical R&D, Knollstraße, D-67061 Ludwigshafen am Rhein, Germany.
Pharmaceutics
|May 27, 2023
概括
这项研究解释了药物负载如何通过建模凝层行为来影响无形固体分散 (ASD) 释放. 热力学预测准确地预测由于ASD/水接口的结晶或相分离而导致的释放损失 (LoR).
科学领域:
- 制药科学 制药科学
- 物理化学 物理化学
- 材料科学 材料科学 材料科学
背景情况:
- 无形固体分散 (ASD) 配方对于提高药物的溶解性和生物可用性至关重要.
- 在ASD/水接口形成的凝层显著影响药物释放动力学和溶解性能.
- 药物负载 (DL) 和API属性决定了侵蚀和非侵蚀凝层行为之间的过渡.
研究的目的:
- 系统地分类ASD释放机制,重点关注释放损失 (LoR) 的现象.
- 用三元相图和界面层行为来热力学解释和预测LoR.
- 通过实验验证基于PVPVA64的自闭症的建模预测.
主要方法:
- 使用扰乱链统计关联流体理论 (PC-SAFT) 预测三元相行为 (API,PVPVA64,水) 的热力学建模.
- 使用戈登-泰勒方程建模玻璃过渡.
- 通过溶解测试,显微镜,拉曼光谱和尺寸排除色谱进行实验验证.
主要成果:
- 释放损失 (LoR) 是由在ASD/水接口的API结晶或液液相分离 (LLPS) 驱动的,取决于药物负载 (DL).
- 超过值DL的结晶阻碍了API和聚合物释放.
- LLPS形成了富含API和富含聚合物的相;在值DL以上的接口上积累了水性富含API相,防止了API的释放.
结论:
- 热力学建模提供了一种强大的机械工具,用于预测基于PVPVA64的ASD中的DL依赖的LoR.
- 该方法根据相图和界面现象准确地分类ASD释放机制.
- 实验验证证证实了ASD溶解行为的热力学建模的预测能力.
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