使用临床前动物模型和体外预测技术评估结核病药物疗效
Hazem F M Abdelaal1, Bryan J Berube1,2, Brendan K Podell3
1Seattle Children's Research Institute, Center for Global Infectious Disease Research, Seattle, WA, 98145, USA.
npj antimicrobials and resistance
|January 22, 2025
概括
贝达基林 (BDQ) 和卡普雷奥米辛 (CAP) 的组合在小鼠和几内亚猪模型中显示出对结核病 (TB) 的协同效应. 虽然BDQ单独是有效的,但CAP单疗法不是,强调了需要新的结核病治疗策略.
科学领域:
- 微生物学 微生物学
- 传染性疾病 传染性疾病
- 药理学 药理学是指药理学的学科.
背景情况:
- 结核病 (TB) 仍然是一个重大的全球健康威胁,每年造成数百万人的死亡.
- 多耐药 (MDR) 和广泛耐药 (XDR) 菌株的兴起需要开发新的治疗策略.
- 贝达基林 (BDQ) 是当前结核病治疗方案中的关键药物.
研究的目的:
- 调查抗生素组合的协同效应,特别是贝达基林 (BDQ) 与卡普雷米辛 (CAP),线索利德 (LIN) 和苏特索利德 (SUT) 的协同效应,用于抗结核菌菌 (M.tb).
- 评估BDQ和CAP组合治疗在体内使用已确定的结核病动物模型的疗效.
主要方法:
- 使用高通量体外检查板试验来评估对M.tb H37Rv.的药物相互作用.
- 在C57BL/6小鼠和被M.tb感染的几内亚猪中,使用低剂量气溶模型测试了体内疗效.
- 治疗组包括单独BDQ,单独CAP和BDQ和CAP的组合,在肺和脏组织中评估细菌负担.
主要成果:
- 实验室研究表明BDQ和CAP之间对M.tb H37Rv的协同作用.
- 在体内研究表明,单独BDQ和BDQ/CAP组合显著降低了小鼠和几内亚猪的细菌负载.
- 在两种动物模型中,CAP单疗法都没有显著降低细菌负荷,在某些情况下,小鼠的肺部细菌负荷增加.
- 在不同的M.tb血统中观察到体外疗效的变化,特别是在BDQ/CAP组合与血统4相比.
结论:
- 贝达基林和卡普雷奥米辛的组合表现出对结核病的协同抗微生物活性.
- 在体内,BDQ在降低M.tb负担方面表现出显著的有效性,无论是作为单一治疗还是与CAP结合使用.
- 单一CAP治疗对结核病治疗无效,甚至可能有害;其在组合治疗中的作用需要进一步研究.
- 药物的有效性在不同的M.tb血统中可能有所不同,强调需要量身定制的治疗方法.
更多相关视频
10:29A High-throughput Compatible Assay to Evaluate Drug Efficacy against Macrophage Passaged Mycobacterium tuberculosis
Published on: March 24, 2017
7.8K
09:23Use of the Invertebrate Galleria mellonella as an Infection Model to Study the Mycobacterium tuberculosis Complex
Published on: June 30, 2019
11.8K
相关概念视频
Preclinical Development: Overview
4.2K
Preclinical development consists of a series of tests that ensure the safety and efficacy of a new therapeutic compound before it is tested in humans. There are four main phases to this process. First, safety pharmacology tests are conducted to ensure the drug does not produce any acutely harmful effects. These tests examine parameters such as bronchoconstriction, cardiac dysrhythmias, blood pressure changes, and ataxia. Next, preliminary toxicological testing is performed to determine the...
4.2K
Mouse Models of Cancer Study
5.5K
Mice have long served as models for studying human biology and pathology because of their phylogenetic and physiological similarity with humans. They are also easy to maintain and breed in the laboratory, and hence, many inbred strains are now available for research. Studies on mice have contributed immeasurably to our understanding of cancer biology.
The development of transgenic, knockout, and knock-in mice has led to an exponential increase in their use as model organisms in research,...
The development of transgenic, knockout, and knock-in mice has led to an exponential increase in their use as model organisms in research,...
5.5K
Pulmonary Tuberculosis IV
132
Tuberculosis, more commonly referred to as TB, is an infectious disease stemming from Mycobacterium tuberculosis. While it primarily impacts the lungs, TB can also affect other body areas. Given its severity and global impact, timely and accurate diagnosis is crucial for controlling its spread and improving patient outcomes.
Several diagnostic approaches are used to detect TB. The conventional method is the Tuberculin Skin Test (TST), also known as the Mantoux test. However, this method has...
Several diagnostic approaches are used to detect TB. The conventional method is the Tuberculin Skin Test (TST), also known as the Mantoux test. However, this method has...
132
Pharmacokinetic Models: Comparison and Selection Criterion
38
Physiological and compartmental models are valuable tools used in studying biological systems. These models rely on differential equations to maintain mass balance within the system, ensuring an accurate representation of the dynamic processes at play.
Physiological models take a detailed approach by considering specific molecular processes. They can predict drug distribution, metabolism, and elimination changes, providing a comprehensive understanding of how drugs interact with the body.
Physiological models take a detailed approach by considering specific molecular processes. They can predict drug distribution, metabolism, and elimination changes, providing a comprehensive understanding of how drugs interact with the body.
38
Pulmonary Tuberculosis V
170
Medical management of tuberculosis (TB) patients involves a comprehensive approach that includes diagnosis, treatment, and monitoring. The specific strategies can vary depending on the type of tuberculosis (latent or active), the patient's overall health status, and other considerations.
Latent tuberculosis infection occurs when TB bacteria are present in a person's body, but are not causing illness or symptoms. It is not contagious, and preventive treatment is crucial to avoid the...
Latent tuberculosis infection occurs when TB bacteria are present in a person's body, but are not causing illness or symptoms. It is not contagious, and preventive treatment is crucial to avoid the...
170
