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通过时间解析的X射线微拍扫描对个体和晶体群体溶解率的评估

Filip Hládek^1,2, David Zůza^1,2, Ondřej Navrátil^1,2

¹Department of Chemical Engineering, University of Chemistry and Technology, Prague, Technická 5, Praha 166 28, Czech Republic.

Crystal growth & design

|July 10, 2024

概括

这项研究引入了一种新的方法,使用X射线微图学来追踪单个粒子溶解,揭示了超出传统内在溶解率 (IDR) 测量的变化.

科学领域:

制药科学制药科学
材料科学材料科学材料科学
化学工程是化学工程的重要组成部分.

背景情况:

传统的内在溶解率 (IDR) 测量不考虑影响溶解的粒子特定因素.
单个粒子溶解因形态,表面粗度和晶体面暴露而有很大差异.
了解批量内变异性对于准确的制药配方和药物输送至关重要.

研究的目的:

开发和应用时间分辨率的X射线微观图谱,用于同时进行单个粒子溶解分析.
为了研究大量的晶体颗粒在透包装床中的溶解动力学.
通过评估批量内变化和人口统计数据,更深入地了解溶解过程.

主要方法:

利用时间分辨率的X射线微图学来可视化定制流细胞中的溶解.
采用3D图像分析来追踪单个粒子形状,大小和表面积的变化.
通过使用NaCl晶体在三个不同大小的分数中建模溶解过程.

主要成果:

成功可视化和量化了个体粒子在现场的溶解.
在一个群体内的个体粒子之间显示了溶解行为的显著差异.
收集关于颗粒物种群统计和批内变异性的数据.

结论:

时间分辨率的X射线微观图形提供了一个强大的工具来补充已建立的IDR测量.
这种技术通过捕捉单个粒子的行为,为溶解动力学提供了更全面的理解.
这些发现强调了在药物应用中的溶解研究中考虑粒子水平变化的重要性.

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