基于生理学的药理动力学/药理动力学建模 (PBPK/PD) 怀孕期间的法莫蒂丁
Xiaomei I Liu1, Dionna J Green2, John van den Anker1
1Division of Clinical Pharmacology, Children's National Hospital, Washington, DC, USA.
这项研究开发了一种基于生理学的药理动力学 (PBPK) 模型,用于怀孕个体的胃灼热药物famotidine. 该模型准确地预测了famotidine水平,显示了妊娠晚期暴露的减少,以及其对胃酸的影响.
科学领域:
- 药理学 药理学是指药理学的学科.
- 药理动力学 药理动力学
- 基于生理学的药理动力学建模
背景情况:
- 芳丁是一种组胺H2受体对手,在怀孕期间经常用于胃灼热和胃食道逆流症.
- 孕妇群体中famotidine的药理动力学数据有限,原因是通常被排除在临床试验之外.
研究的目的:
- 在非怀孕和怀孕的个体中开发和验证法莫蒂丁的生理学基础的药理动力学 (PBPK) 模型.
- 将PBPK模型与药理动力学 (PD) 模型集成,以预测famotidine对胃内pH的影响.
主要方法:
- 为 famotidine 开发一个 PBPK 模型.
- 使用文献中的临床数据对非孕妇和孕妇群体进行PBPK模型的评估.
- 结合PBPK模型和PD模型来评估胃内pH值的变化.
主要成果:
- 该PBPK模型证明了在不同季度的非孕妇和孕妇中成功预测了famotidine的药理动力学.
- 预测的famotidine暴露在怀孕中期 (平均24%的减少) 和怀孕后期 (平均20%的减少) 低于非怀孕的个人.
- 该PBPK/PD模型准确地反映了famotidine后胃内pH值的增加,并预测了怀孕中期和晚期的类似效应.
结论:
- 开发的PBPK模型为预测孕妇群体中famotidine的药理动力学和药理动力学提供了可靠的工具.
- 结果表明怀孕期间的 famotidine 暴露发生了变化,需要进一步的临床研究以优化剂量策略.
- 额外的临床数据对于解决个体间的变异性和完善孕妇使用famotidine的治疗建议至关重要.
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