人口的药理动力学和基于蒙特卡洛的trimethoprim- sulfamethoxazole剂量优化
Bo Chen1,2, Yiying Chen1,2, Ming Chen1,2
1Department of Pharmacy, Fujian Medical University Union Hospital, Fuzhou, China.
Antimicrobial agents and chemotherapy
|September 3, 2025
概括
硫甲醇 (SMX) 和三甲胺 (TMP) 的群体药动力学模型显示了当前的剂量风险. 对于患有功能障碍的患者来说,剂量调整至关重要,以确保最佳的治疗疗效和安全性.
科学领域:
- 药理学
- 临床药房
- 传染性疾病
背景情况:
- 静脉注射的硫甲 (SMX) 和三甲 (TMP) 用于肺炎.
- 优化SMX-TMP剂量对于患者的治疗结果至关重要,尤其是在有不同器官功能的患者中.
- 现有的剂量指南可能无法考虑个体的药物动力学变化.
研究的目的:
- 为静脉注射SMX和TMP开发人口药理学 (PopPK) 模型.
- 优化SMX-TMP的剂量方案,用于治疗Pneumocystis jirovecii肺炎.
- 评估功能,肝功能和遗传多态性对SMX和TMP药理学的影响.
主要方法:
- 这是一项前性研究,涉及79名接受静脉注射SMX- TMP的成年患者.
- 用于开发PopPK模型的非线性混合效应建模.
- 进行蒙特卡洛模拟以确定最佳剂量策略.
主要成果:
- 肌素清除 (CrCL) 与SMX和TMP的药理学有显著的相关性;持续的替代疗法影响了SMX.
- 肝功能和遗传多态性 (NAT2,CYP2C9) 并没有显著影响模型.
- 50 mg/ kg/ 天的分剂方案适用于CrCL< 15 mL/ min的患者.
- 在正常功能患者中,指导方针建议的90 mg/ kg/ 天剂量可能会导致超治疗性暴露.
结论:
- 功能是SMX- TMP药理学的一个关键决定因素,需要调整剂量.
- 目前的剂量指南可能会导致某些患者过度暴露.
- 这项研究提出了更精确的剂量策略,以提高SMX-TMP治疗的疗效和安全性.
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