用完整的贝叶斯式 LeiCNS PBPK 建模方法对成人病毒性脑炎重新审视阿西克洛维尔剂量
Ming Sun1,2, Martijn L Manson1, Anne-Grete Märtson1
1Systems Pharmacology and Pharmacy, Leiden Academic Centre for Drug Research (LACDR), Leiden University, Leiden, The Netherlands.
Clinical pharmacokinetics
|July 13, 2025
概括
目前用于中枢神经系统感染的阿西克洛维尔剂量可能不足. 替代方案,如增加频率或更长的输液,显示在治疗简单疹病毒 (HSV) 和疹病毒 (VZV) 脑炎时,疗效和安全性得到改善.
科学领域:
- 药理学 药理学是指药理学的学科.
- 传染性疾病 传染性疾病
- 计算生物学 计算生物学
背景情况:
- 乙克洛维尔是一种主要治疗中枢神经系统 (中枢神经系统) 感染的药物,这种感染是由简单疹病毒 (HSV) 和疹病毒 (VZV) 引起的.
- 尽管目前的阿西克洛维尔治疗方案仍然存在,但患者的不理想结果仍然存在.
- 由于缺乏替代疗法,极其需要优化对病毒性脑炎的阿西克洛维尔剂量.
研究的目的:
- 评估当前和替代性阿西克洛维尔剂量方案用于中枢神经系统感染.
- 使用贝叶斯的中枢神经系统生理学基础的药理动力学 (PBPK) 建模方法.
- 评估不同剂量策略对药物暴露和疗效的影响.
主要方法:
- 使用LeiCNS3.0模型进行了全面的贝叶斯分析,以描述阿西克洛维尔的中枢神经系统分布.
- 模拟对比了标准的阿西克洛维尔剂量 (10毫克/公斤三次) 与替代方案.
- 通过50%的fT> IC50和Cmin> IC50目标来评估有效性,血度的毒性值为25 mg/L.
主要成果:
- 标准的阿西克洛维尔疗法 (10毫克/千克三次每天) 达到50%的fT>IC50目标,但不一致地实现了Cmin>IC50目标,特别是在VZV.
- 替代方案,包括增加剂量频率 (QID) 或延长输液持续时间 (1.5-2小时),提高了疗效.
- 长时间输注降低了血峰值,从而降低了毒性风险.
结论:
- 贝叶斯的中枢神经系统PBPK建模为中枢神经系统的药理动力学提供了强大的预测工具.
- 目前的阿西克洛维尔剂量可能不足以治疗HSV和VZV脑炎.
- 替代剂量策略,如增加频率或延长输注,似乎更有效和更安全,因此需要进一步调查PK/PD关系以获得更好的结果.
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