酸盐和二碳酸盐缓冲溶液作为溶解试验介质的比较,用于预测febuxostat配方的生物等价性
Masaki Higashino1,2, Kiyohiko Sugano1
1Molecular Pharmaceutics Lab., College of Pharmaceutical Sciences, Ritsumeikan University.
Chemical & pharmaceutical bulletin
|November 20, 2024
概括
与酸盐缓冲剂 (PPB) 相比,二碳酸盐缓冲剂 (BCB) 在10mM和25rpm的速度更好地预测立即释放 (IR) 的febuxostat配方的生物等价性 (BE). 这一发现增强了药物产品开发的溶解测试.
科学领域:
- 制药科学 制药科学
- 药物产品开发 药物产品开发
- 生物等价性研究 生物等价性研究
背景情况:
- 溶解测试对于预测药物产品性能和生物等价性 (BE) 是至关重要的.
- 选择合适的溶解介质对于准确的体外与体内相关性至关重要.
- 酸盐缓冲器 (PPB) 和二碳酸盐缓冲器 (BCB) 是常见的溶解介质,但它们在预测BE方面的比较性能需要进一步研究.
研究的目的:
- 为了比较酸盐缓冲剂 (PPB) 和二碳酸盐缓冲剂 (BCB) 作为溶解试验介质,以预测即释放 (IR) 配方的生物等价性 (BE).
- 为了评估不同缓冲系统的体外-体内相关性,使用febuxostat作为模型药物.
主要方法:
- 使用了febuxostat即时释放配方 (一个参考,三个测试).
- 溶解测试使用综合装置 (500毫升,37°C,25或50转/分钟) 与PPB (2.525毫米) 和BCB (10毫米) 在pH值6.8.8进行.
- 对健康志愿者进行了临床生物等价性研究.
主要成果:
- 在每分钟50转时,所有缓冲溶液的溶解配置显示出最小的差异.
- 在每分钟25转时,2.5毫米PPB和10毫米BCB中的溶解概况与临床生物等价性结果一致.
- 在25 rpm的10 mM BCB中观察到体外-体内相关性最高 (Cmax比率与溶解%比率).
结论:
- 与酸盐缓冲器 (PPB) 相比,二碳酸盐缓冲器 (BCB) 在10mM和25rpm的速度显示出与酸盐缓冲器 (PPB) 相比,生物等效性具有更好的可预测性.
- 这些发现表明,BCB可以提高溶解测试的可靠性,用于预测即时释放配方的体内性能.
- 优化溶解介质选择,例如使用10mM BCB,可以提高生物等价性评估的准确性.
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