Related Experiment Video
Updated: Jul 14, 2026
10:29
A High-throughput Compatible Assay to Evaluate Drug Efficacy against Macrophage Passaged Mycobacterium tuberculosis
Published on: March 24, 2017
Extensively drug-resistant tuberculosis: are we learning from history or repeating it?
Carol Dukes Hamilton1, Timothy R Sterling, Henry M Blumberg
1Duke University School of Medicine, Durham, NC 27710, USA. dukes002@mc.duke.edu
Summary
Extensively drug-resistant tuberculosis (XDR-TB) poses a severe global health threat, particularly in South Africa. Urgent action is needed to improve TB prevention, diagnosis, and treatment funding worldwide.
Area of Science:
- Public Health
- Infectious Diseases
- Epidemiology
Background:
- Tuberculosis (TB) remains a significant global health challenge.
- Increasing numbers of extensively drug-resistant TB (XDR-TB) cases are reported worldwide.
- A severe XDR-TB outbreak in South Africa, linked to rapid mortality in HIV patients, highlights critical treatment and transmission issues.
Purpose of the Study:
- To address the growing threat of XDR-TB.
- To emphasize the need for enhanced international TB prevention and treatment efforts.
- To advocate for increased funding and improved resources for TB control programs.
Main Methods:
- Review of epidemiological features of a major XDR-TB outbreak.
- Assessment of current TB control strategies and funding.
- Call for expert involvement and development of new treatment and diagnostic approaches.
Main Results:
- The South African outbreak suggests a high risk of healthcare-associated transmission.
- Standard TB therapy and antiretrovirals were insufficient in this severe outbreak.
- Substandard diagnostics and inadequate funding impede effective TB control.
Conclusions:
- Increased involvement of infectious disease experts is crucial for global TB efforts.
- Expanded access to diagnostics, funding for research, and development of better treatments are urgently required.
- Reassessment of TB control funding is necessary to combat the escalating global TB mortality.
Related Concept Videos
01:28Pulmonary Tuberculosis V
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 progression...
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 progression...
01:23Tuberculosis
Tuberculosis (TB) remains a significant global health concern, primarily targeting the lungs and spreading through airborne transmission. Infection begins when aerosolized droplet nuclei, expelled by an individual with active TB, are inhaled by another person. These microscopic particles carry Mycobacterium tuberculosis, the causative agent of TB. Upon reaching the alveoli, the bacilli are engulfed by alveolar macrophages. However, due to their specialized lipid-rich cell wall, these pathogens...
01:29Pulmonary Tuberculosis I
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...
01:30Development of Antibiotic Resistance
Antibiotic resistance is a major public health concern that arises when bacteria evolve mechanisms to withstand the effects of antibiotic treatments. This resistance can be intrinsic, acquired through genetic mutations, or transferred between bacteria via horizontal gene transfer. The development of antibiotic resistance poses significant challenges in treating bacterial infections and necessitates ongoing research to develop new therapeutic strategies.Intrinsic resistance occurs when bacterial...
01:28Pulmonary Tuberculosis II
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...
01:26Pulmonary Tuberculosis IV
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...