药物诱导的表型耐药性的影响: 是异化激化M. 有没有结核病?
Rjh Hammond1, Frank Kloprogge2,3, O Della Pasqua2
1Division of Infection and Global Health, School of Medicine, University of St Andrews, St Andrews, United Kingdom.
Frontiers in antibiotics
|January 16, 2025
概括
结核病中的异化治疗可以增加脂质含量,导致药物耐药性. 了解这些机制对于开发有效的结核病治疗方案至关重要.
科学领域:
- 微生物学 微生物学
- 药理学 药理学是指药理学的学科.
- 传染性疾病 传染性疾病
背景情况:
- 结核病 (TB) 治疗需要长时间的治疗,不能保证消除感染.
- 需要更短的结核病治疗方案,以改善患者的坚持,减少复发和耐药性.
- 菌根菌在培养成阴性后的持久性尚未完全理解;脂质含有可能在抗生素耐药性中发挥作用.
研究的目的:
- 调查异化和利芬素对菌根菌中的脂质包容表达的杀菌作用.
- 对各种抗结核病剂的表型抗生素耐药性与脂质含有相关的特征.
主要方法:
- 洞纤维系统 (HFS) 和静态时间杀死曲线 (STKC) 实验被用来评估抗生素杀死效应.
- 菌根菌培养被染色以确定生命力 (resazurin,Sytox绿色) 和脂质含量状态 (尼罗河红色).
- 对抗结核病剂的最小抑制度 (MIC) 进行了对HFS实验中的真菌细菌的测试.
主要成果:
- 里法西因在MIC处迅速杀死*M.komossense*,而单独使用的异化物效果较差.
- 相比于单独使用任何一种药物,联合的异化和利芬素显示出明显更大的杀伤效果.
- 随着时间的推移,异化物暴露增加了脂质体阳性细胞,与对多种抗结核病药物的表型耐药性增加相关.
结论:
- 伊索尼亚齐德促进体内脂质的积累,有助于真菌细菌的持久性和多药性耐药性.
- 了解药物相互作用和表型耐药机制对于优化结核病治疗方案至关重要.
更多相关视频
10:04Analysis of 18FDG PET/CT Imaging as a Tool for Studying Mycobacterium tuberculosis Infection and Treatment in Non-human Primates
Published on: September 5, 2017
17.1K
06:07Matrix-based DNA Extraction for Targeted Next-Generation Sequencing on Decontaminated Sputum Samples
Published on: June 6, 2025
1.5K
相关概念视频
02:56Treatment Resistant Cancers
3.2K
Cancer is the second leading cause of death in the United States. A cancer cell is genetically unstable and hence can mutate faster. They can also modify their microenvironment and escape immune surveillance. The difficulties in treating cancer are further compounded by the emergence of rapid resistance to anticancer drugs. The most common ways to attain resistance in cancer cells include alteration in drug transport and metabolism, modification of drug target, elevated DNA damage response, or...
3.2K
01:20Desensitization and Tachyphylaxis
1.5K
Tachyphylaxis is described as a rapid decrease in response to a drug after repeated or continuous administration of the same drug dose. It is a phenomenon where the body becomes less responsive to a particular substance or intervention over time, requiring higher doses or stronger interventions to achieve the same effect. It results from adaptive changes in the body's receptors, signaling pathways, or physiological processes that occur in response to prolonged exposure to a stimulus.
1.5K
01:29Pulmonary Tuberculosis I
220
Tuberculosis, often called TB, is a contagious illness primarily caused by Mycobacterium tuberculosis. It mainly affects the lung parenchyma but can also impact other body parts.
Causative Organism
The primary infectious agent causing tuberculosis is Mycobacterium tuberculosis, a slow-growing, acid-fast, aerobic rod that exhibits sensitivity to heat and ultraviolet light. Instances of Mycobacterium bovis and Mycobacterium avium contributing to the development of TB infection are rare.
Mode of...
Causative Organism
The primary infectious agent causing tuberculosis is Mycobacterium tuberculosis, a slow-growing, acid-fast, aerobic rod that exhibits sensitivity to heat and ultraviolet light. Instances of Mycobacterium bovis and Mycobacterium avium contributing to the development of TB infection are rare.
Mode of...
220
01:28Pulmonary Tuberculosis II
211
Tuberculosis, or TB, is a bacterial infectious disease caused by Mycobacterium tuberculosis. While its primary impact is on the lungs, leading to pulmonary tuberculosis, it can also affect various other organs, a condition referred to as extrapulmonary tuberculosis.
Here is a detailed explanation of its pathophysiology:
Transmission: The process begins when a person inhales droplet nuclei containing M. tuberculosis. These are typically released into the air when an individual with pulmonary or...
Here is a detailed explanation of its pathophysiology:
Transmission: The process begins when a person inhales droplet nuclei containing M. tuberculosis. These are typically released into the air when an individual with pulmonary or...
211
01:26Pulmonary Tuberculosis IV
133
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...
133
01:28Pulmonary 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