在商用塔克罗利木斯无形配方中药物晶度的变化导致可变的药理动力学
Lynne S Taylor1, Niraj S Trasi1, Hitesh S Purohit2
1Department of Industrial and Molecular Pharmaceutics, College of Pharmacy, Purdue University, West Lafayette, IN 47907, United States.
Journal of pharmaceutical sciences
|October 16, 2024
概括
药物结晶性显著影响着塔克罗利斯的药理动力学. 即使在通用囊中含有少量晶体塔克罗利斯,也会导致生物等价性失败,这引起了对无形药物配方的临床担忧.
科学领域:
- 制药科学 制药科学
- 药物输送和配方 药物输送和配方
- 药理动力学 药理动力学
背景情况:
- 塔克罗利斯囊使用一种无形药物形式,对于配方性能至关重要.
- 药物结晶性是影响无形药物的生物可用性的已知危险因素.
研究的目的:
- 为了研究晶体塔克罗利斯的不同水平如何影响其口服后的药理动力学.
- 评估塔克罗利斯结晶对通用配方生物等价性的影响.
主要方法:
- 在市场上销售的仿制塔克罗利斯被暴露在受控的湿度和温度下,以诱导结晶性 (20%和50%).
- 使用X射线粉末衍射量化结晶度.
- 一项随机交叉研究比较了无形仿制药,晶体仿制药 (20%, 50%) 和参考列出的药物 (RLD) 药理动力学在健康参与者的24小时.
主要成果:
- 无形通用塔克罗利斯产品与RLD没有生物等价.
- 与无形的仿制药和RLD相比,20%和50%的晶体塔克罗利莫斯配方都没有达到生物等价性 (BE) 标准.
- 塔克罗利斯的结晶更显著地影响了最大度 (Cmax),而不是曲线下的面积 (AUC).
结论:
- 在通用产品中塔克罗利斯的结晶导致可变的药理动力学.
- 由于塔克罗利斯结晶而产生的这些药理动力学变化引起了潜在的临床担忧.
- 确保通用配方中塔克罗利斯的无形状态对于一致的治疗结果至关重要.
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