通过使用生理学基础的药理动力学建模来评估载体介导的里法-林佐利德相互作用
Hoang Dat Nguyen1, Vinh Hoa Pham2, Richard M Hoglund3,4
1Master of Science Program in Biopharmaceutical Sciences, Department of Biochemistry, Faculty of Pharmacy, Mahidol University, Bangkok, Thailand.
British journal of clinical pharmacology
|January 27, 2026
概括
结合ATP的磁带亚家族B成员1 (ABCB1) 载体主要驱动着里法和线索立德之间的药物相互作用. 与标准剂量相比,高剂量的利法并不显著改变线索利德的暴露.
科学领域:
- 药理动力学和药物新陈代谢
- 计算机生物学和建模
- 传染病药理学 传染病药理学
背景情况:
- 药物相互作用 (DDI) 涉及利芬和线索利德可以改变线索利德的疗效和安全性.
- 了解ABCB1和ABCG2等特定载体的作用,对于预测和管理这些相互作用至关重要.
- 基于生理学的药理动力学 (PBPK) 建模提供了一种定量方法来研究复杂的DDI.
研究的目的:
- 开发和验证linezolid的PBPK模型.
- 量化评估ABCB1和ABCG2载体对利法-线化物DDI的贡献.
- 预测高剂量里法胺对线化物药理动力学 (PK) 的影响.
主要方法:
- 用临床PK数据构建和验证了linezolid的PBPK模型.
- 我们使用了一种PK-SIM PBPK模型来对抗利法,该模型包含了ABCB1和ABCG2输送活性.
- 在PBPK模拟中预测了与里法胺联合使用时的linezolid PK,包括高剂量场景.
主要成果:
- 在多项临床研究中,linezolid PBPK模型表现出良好的预测性能.
- PBPK模拟表明,ABCB1在里法-林佐利德DDI中比ABCG2发挥更重要的作用.
- 预测的标准剂量里法的DDI比率与观察到的临床数据密切匹配.
- 增加里法的剂量并没有实质性地改变linezolid的暴露.
结论:
- 鉴定出ABCB1是中介Rifampin和linezolid之间的DDI的主要载体.
- 高剂量里法胺对线化物暴露的DDI影响与标准剂量里法胺的影响相当.
- PBPK建模为预测传送器介导的DDI提供了有价值的工具.
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