关于选择持续静脉输液的最佳稳定状态塔克罗利斯度的指导:从生理学基础的药物动力学建模的见解
Romain Martischang1, Argyro Nikolaou2, Youssef Daali2,3,4
1Division of General Internal Medicine, Geneva University Hospitals, 1205 Geneva, Switzerland.
Pharmaceuticals (Basel, Switzerland)
|August 29, 2024
概括
基于生理学的药理动力学建模 (PBPK) 有助于确定塔克罗利斯平稳状态 (Css) 到低谷 (Cmin) 度比率. 这有助于精确的剂量和治疗药物监测,当切换口服和静脉注射塔克罗利斯在移植患者的管理.
科学领域:
- 药理动力学和药物新陈代谢
- 翻译药理学 翻译药理学
- 计算生物学 计算生物学
背景情况:
- 在间歇性口服中,塔克罗利斯的剂量通常以最低度 (Cmin) 为指导.
- 持续静脉注射 (IV) 需要稳定状态 (Css) 度监测,通常被误认为是Cmin.
- 这种误解可能导致TACROLIMUS血液水平低于治疗水平.
研究的目的:
- 通过使用生理学基础的药理动力学 (PBPK) 建模,确定塔克罗利斯的平稳状态至最低度 (Css/Cmin) 的比率.
- 在各种临床场景中评估这种比率,包括药物相互作用和遗传多态.
- 为了提供一个工具,在改变塔克罗利斯施用路线时准确调整剂量.
主要方法:
- 用一个经过验证的PBPK模型来模拟塔克罗利斯的药理动力学.
- 口服 (PO) 和静脉注射剂量,以及Css/Cmin比率,估计在剂量间隔 (AUCτ) 值期间匹配血液度-时间曲线下的面积.
- 模拟包括健康受试者,CYP3A相互作用,CYP3A5多态性和临床病例.
主要成果:
- 在健康志愿者中,口服/静脉注射 (PO/IV) 剂量比为4.25,Css/Cmin比为1.40.
- 表达CYP3A5的患者的PO/IV剂量比为4.00和Css/Cmin比为1.75.
- 与伊特拉科纳 (CYP3A抑制剂) 联合使用导致PO/IV比率为1.75和Css/Cmin比率为1.28,对IV伊特拉科纳的影响降低.
结论:
- 通过PBPK建模,有效地估计了塔克罗利斯的PO/IV剂量和Css/Cmin比率.
- 这些比率可以改善剂量调整和治疗药物监测,当切换tacrolimus的管理途径.
- 结果支持临床医生对移植患者实时决策;建议进一步进行体内验证.
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