使用多种药学动力学措施来解构Nix-TB疗法在短时间结核病小鼠模型中
M A Lyons1, A Obregon-Henao1, M E Ramey1
1Department of Microbiology, Immunology and Pathology, Mycobacteria Research Laboratories, Colorado State University, Fort Collins, Colorado, USA.
Antimicrobial agents and chemotherapy
|March 19, 2024
概括
这项研究评估了结核病 (TB) 治疗组合中的药物贡献,使用小鼠模型和药理动力学标记. 数学建模准确地从单个药物效应预测了治疗方案的反应,简化了结核病药物开发.
科学领域:
- 药理学 药理学是指药理学的学科.
- 微生物学 微生物学
- 数学建模的数学建模
背景情况:
- 结核病 (TB) 药物开发需要对组合疗法进行高效的优先考虑.
- 了解复杂疗法中的个体药物贡献对于优化疗效至关重要.
- 尼克斯-结核病疗法 (bedaquiline-pretomanid-linezolid, BPaL) 是结核病治疗的临床相关组合.
研究的目的:
- 在小鼠结核病模型中评估BPaL疗法中每种药物和双对组合的贡献.
- 利用药理动力学 (PD) 标志物,包括rRNA合成比率,CFU计数和时间到阳性 (TTP),以评估治疗反应.
- 开发和验证一种数学建模方法,以预测基于单药和双药效应的组合疗法活性.
主要方法:
- 使用BALB/c小鼠结核病感染模型,以测试人类相应剂量的药物组合.
- 采用rRNA合成 (RS) 比率,固体培养CFU和液体培养TTP作为肺组织中治疗反应的PD标志物.
- 使用Bliss独立和Isserlis公式,应用数学建模与速率方程和量化抗微生物相互作用.
主要成果:
- 评估的贝达基林 - 普雷托曼尼德和线索利德含有的对显示分别对细菌负载 (CFU,TTP) 的亚添加/对抗和添加效应.
- 观察到分别对含有普雷托曼尼德-林佐利德和贝达奎林的对对对rRNA合成的亚添加和添加效应.
- 准确地预测了所有PD标志物的整体BPaL疗法反应,仅使用单药和双药相互作用数据,假设三向相互作用微不足道.
结论:
- 证明PD标记物的数学建模可以预测复杂的结核病药物组合的疗效.
- 展示了一种具有成本效益的实验和建模方法,以减少临床前结核病药物开发中的组合复杂性.
- 验证了rRNA合成比率作为探索性PD标志物在体内评估结核病药物活性时的有用性.
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