使用口服溶液度数据的数值解卷计算,估计人体膜的有效透性.
Wenqian Zhang1, Jia Geng1, Xingrui He1
1Division of Biopharmaceutics and Pharmacokinetics, Xiangya School of Pharmaceutical Sciences, Central South University, Tongzipo Road 172, Changsha, 410013, China.
一种新的数值解卷方法从口服和静脉注射药物数据准确地估计了膜透性. 这种方法解释了第一通代谢,简化了无需复杂的输液研究的透性评估.
科学领域:
- 药理动力学和药物新陈代谢
- 胃肠道生理学 胃肠道生理学
- 在药理学中的计算建模.
背景情况:
- 准确的确定人类肠道有效透性 (Peff) 对药物开发至关重要.
- 传统的人体肠道 perfusion 实验是复杂和具有挑战性的.
- 需要使用非侵入性方法来估计膜透性.
研究的目的:
- 开发和验证一个数值解卷方法来估计膜透性.
- 为了利用口服溶液和静脉注射的度-时间数据.
- 评估第一通代谢对透率估计的影响.
主要方法:
- 包括27种不同的药物 (酸性,基本性,安菲性,中性).
- 在五个时间窗口中对口腔和IV数据应用了数值解卷.
- 计算的未经校正 (Peff,uncorr) 和第一通代谢校正 (Peff,FP_corr) 的透度.
- 将估计值与观察到的人类 perfusion 数据 (Peff,obs) 和现有模型进行比较.
主要成果:
- 0.25-0.75小时的时间窗口显示出与观察到的透率的最佳一致.
- 佩夫,FP_corr与佩夫,obs (R2=0.83) 显示出强烈的相关性.
- 拟议的方法表现优于三参数平均模型,并且与特定站点的解卷可比.
结论:
- 一种基于口服溶液的数值解卷法准确地估计了膜透性.
- 考虑到第一通代谢是可靠的透性预测的关键.
- 这种方法为侵入性输液研究提供了一个更简单的替代方案.
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