半生理学人群口服和静脉注射黄的药理学建模,以量化系统前代谢和肠肝循环
Cedric Lau1,2,3, Charlotte van Kesteren1, Robert M Smeenk4
1Department of Clinical Pharmacy, Albert Schweitzer Hospital, Dordrecht, the Netherlands.
口服 (PCM) 导致比静脉注射更快的代谢物形成,涉及肝脏和肠道代谢. 这项研究描述了PCM的药理动力学,包括两种给药途径.
科学领域:
- 药理学 药理学是指药理学的学科.
- 药物新陈代谢 药物新陈代谢
- 临床药理学 临床药理学
背景情况:
- 类醇 (PCM) 通过葡萄糖化,硫化和氧化经历了广泛的肝脏代谢.
- 目前对PCM代谢的理解缺乏口服和静脉注射途径之间的全面比较,尽管临床用途可以互换.
研究的目的:
- 在口服和静脉注射后,充分描述PCM及其代谢物的药理学 (PK) 概况.
- 为了考虑系统前和系统代谢,包括肝脏和肠道.
- 为PCM及其代谢物开发一个半生理群体PK模型.
主要方法:
- 来自三项临床研究的数据 (n=69名成年人,有或没有肥胖).
- 非线性混合效应建模以开发半生理群体PK模型.
- 结合肠道和肝脏区,肠肝循环,以及特定的代谢途径 (葡萄糖化,硫化,氧化).
主要成果:
- 一个半生理学PK模型成功地捕获了PCM和PCM-SUL PK在两个路线上.
- 肠道新陈代谢 (PCM-CYS,PCM-MER) 和肠肝循环 (PCM-GLU) 被纳入完整的PK概况.
- 估计口服吸收的PCM分数为0.745,具有广泛的第一通代谢.
- 与静脉注射相比,口服PCM显示代谢物形成速度更快,特别是氧化代谢物.
结论:
- 开发的PK模型阐明了PCM的肝脏和肠道前系统代谢.
- 鉴定出PCM-glucuronide的肠肝循环是其中的一个重要因素.
- 口服PCM导致比静脉注射更快的代谢物生成,突出了特定途径的代谢差异.
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