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Related Concept Videos

Pulmonary Tuberculosis III01:31

Pulmonary Tuberculosis III

519
Tuberculosis (TB) is a contagious infection primarily affecting the lung parenchyma but which can also affect other body parts. TB can be classified based on disease development, presentation, and the affected anatomical site.
The first classification is based on the development of the disease, and it includes the following categories:
519
Pulmonary Tuberculosis V01:28

Pulmonary Tuberculosis V

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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...
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Pulmonary Tuberculosis IV01:26

Pulmonary Tuberculosis IV

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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...
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Pulmonary Tuberculosis II01:28

Pulmonary Tuberculosis II

641
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...
641
Pulmonary Tuberculosis I01:29

Pulmonary Tuberculosis I

409
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...
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Related Experiment Video

Updated: Oct 15, 2025

An Automated Culture System for Use in Preclinical Testing of Host-Directed Therapies for Tuberculosis
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Tuberculosis endotypes to guide stratified host-directed therapy.

Andrew R DiNardo1, Tomoki Nishiguchi1, Sandra L Grimm2,3

  • 1The Global Tuberculosis Program, Texas Children's Hospital, Immigrant and Global Health, Department of Pediatrics, Baylor College of Medicine, Houston, TX, USA.

Med (New York, N.Y.)
|October 25, 2021
PubMed
Summary

Host-directed therapy (HDT) shows promise for treating Tuberculosis (TB), potentially shortening treatment and managing drug-resistant cases. Identifying specific TB "endotypes" through detailed profiling is key to tailoring effective HDT strategies.

Keywords:
Tuberculosisendotypesimmune correlates of protection

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Area of Science:

  • Immunology
  • Infectious Diseases
  • Genomics

Background:

  • Host-directed therapy (HDT) offers potential for Tuberculosis (TB) treatment, aiming to shorten duration, combat drug resistance, and mitigate immunopathology.
  • Current evidence for HDT efficacy is limited to specific patient groups, highlighting the need for better patient stratification.
  • TB presents with variable clinical phenotypes, suggesting underlying molecular differences (endotypes) influence treatment response.

Purpose of the Study:

  • To explore the concept of TB endotypes as distinct molecular profiles.
  • To investigate how these endotypes, influenced by factors like inflammation, comorbidities, and bacterial virulence, impact HDT effectiveness.
  • To propose a framework for identifying endotypes to guide personalized HDT strategies.

Main Methods:

  • Characterization of TB endotypes based on molecular profiles (metabolic, epigenetic, transcriptional, immune).
  • Analysis of factors contributing to endotype variation, including clinical presentation, comorbidities (HIV, diabetes, helminth infection), structural lung disease, and Mycobacterium virulence.
  • Integration of precise disease phenotyping, immunologic profiling, molecular profiling, and multimodal omics data.

Main Results:

  • TB endotypes can be broadly categorized into those associated with immunodeficiency or excessive inflammation.
  • Comorbidities, structural lung disease, and mycobacterial virulence are identified as drivers of distinct TB endotypes.
  • The study emphasizes the potential for precise phenotyping and omics integration to reveal these endotypes.

Conclusions:

  • Identifying TB endotypes is crucial for understanding differential treatment responses to HDT.
  • Tailoring HDT based on specific TB endotypes can optimize treatment outcomes, mirroring advances in precision medicine in oncology.
  • Future research should focus on robust endotyping strategies to enable personalized HDT for improved TB management.