pH-stat与pH-shift脂解模型:研究基于脂质的尼洛替尼的体外-体内关系
Hannah S Kirschbaum1, Niklas J Koehl2, Johannes A Blechar3
1Global Analytical Development, Global CMC Development, Merck Healthcare KGaA, Frankfurter Strasse 250, 64293 Darmstadt, Germany; School of Pharmacy, University College Cork, College Road, Cork, Ireland.
概括
基于脂质的配方 (LBF) 的pH-stat和pH-shift脂解与尼洛丁尼比较显示出强烈的体外与体内关系 (IVIVR). 对于弱基药物,pH转移方法提供了更准确的药物沉预测.
科学领域:
- 制药科学
- 提供药物
- 生物制药
背景情况:
- 传统的pH-stat方法用于评估基于脂质的配方 (LBFs),由于缺乏模拟的胃肠过渡,可能会高估药物沉.
- 准确的体外模型对于预测体内性能和优化配方开发至关重要.
研究的目的:
- 将传统的pH-stat方法与pH-shift脂解方法进行比较,以评估含有弱基药物的LBF.
- 评估两种方法的体外与体内关系 (IVIVR).
- 增强对这些体外药物开发模型的预测能力的理解.
主要方法:
- 使用pH-stat和pH-shift in vitro脂解方法评估了四种含尼洛丁尼的LBF.
- 配方包括超和的Peceol®溶液 (sLBF),中链的Peceol®和其他脂质悬浮液 (LFCS类型I,III和IV).
- 为了确定IVIVR,对Sprague Dawley大鼠进行了尼罗丁尼的药理动力学分析.
主要成果:
- 这两种体外脂解模型都通过体内药理动力学数据确定了强烈的IVIVR.
- 在体内,Peceol® sLBF和III型LFCS配方显示了最高的药物生物可用性.
- pH转移方法提供了更现实的胃肠道状况模拟,可能提高预测准确度.
结论:
- 通过更好地模拟胃肠过渡,pH转移脂解方法比传统的pH-stat方法具有优势,特别是在弱基药物中.
- 这两种体外模型都提供了有价值的见解,根据发展阶段和具体的研究问题有明显的优势.
- 这项比较研究支持更高效的配方开发,并减少了早期动物研究的需要.
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