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Pulmonary Tuberculosis V01:28

Pulmonary Tuberculosis V

226
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...
226
Pulmonary Tuberculosis I01:29

Pulmonary Tuberculosis I

301
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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Pulmonary Tuberculosis II01:28

Pulmonary Tuberculosis II

314
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...
314
Pulmonary Tuberculosis III01:31

Pulmonary Tuberculosis III

414
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:
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Pulmonary Tuberculosis IV01:26

Pulmonary Tuberculosis IV

188
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...
188
Transmission-based Precautions II: Airborne and Protective Environment01:25

Transmission-based Precautions II: Airborne and Protective Environment

1.4K
Transmission-based precautions are for patients infected or suspected to be infected (or colonized) with organisms posing a significant risk to others. The transmission precautions include airborne and protective environment precautions.
Airborne precautions:
Use airborne precautions when treating patients known or suspected to have diseases that spread through the air—for example, tuberculosis or measles. These organisms are present in smaller droplets expelled by an infected person and...
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Related Experiment Video

Updated: Aug 28, 2025

Analysis of 18FDG PET/CT Imaging as a Tool for Studying Mycobacterium tuberculosis Infection and Treatment in Non-human Primates
10:04

Analysis of 18FDG PET/CT Imaging as a Tool for Studying Mycobacterium tuberculosis Infection and Treatment in Non-human Primates

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A world without tuberculosis: moving from imagination to reality.

William R Jacobs

    The Journal of Clinical Investigation
    |September 15, 2022
    PubMed
    Summary

    Weekly isoniazid and rifapentine treatment effectively reduced active tuberculosis (TB) and latent TB infection (LTBI) in a macaque model. This suggests potential for eliminating persister Mycobacterium tuberculosis cells and eradicating TB globally.

    Area of Science:

    • Infectious Diseases
    • Microbiology
    • Pulmonology

    Background:

    • Tuberculosis (TB), caused by Mycobacterium tuberculosis, is a major global infectious disease.
    • Latent TB infection (LTBI) arises from persistent bacteria resisting treatment, posing a significant public health challenge.
    • Current treatments struggle to eliminate persister Mycobacterium tuberculosis cells, leading to chronic infection and transmission.

    Purpose of the Study:

    • To evaluate the efficacy of a novel treatment regimen for reducing active TB and LTBI.
    • To investigate the impact of isoniazid and rifapentine on persister Mycobacterium tuberculosis.
    • To assess the potential for eliminating LTBI and achieving TB eradication.

    Main Methods:

    • An aerosol-based macaque model was utilized to simulate human TB infection.

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  • Animals received weekly treatments with isoniazid and rifapentine for a duration of 3 months.
  • Lung tissues were analyzed to quantify bacterial load and assess granuloma formation.
  • Main Results:

    • Weekly isoniazid and rifapentine treatment significantly reduced active M. tuberculosis infection.
    • The treatment regimen also effectively reduced the burden of latent TB infection (LTBI).
    • Treated animals exhibited fewer lung granulomas compared to untreated controls, indicating reduced inflammation and infection.

    Conclusions:

    • Isoniazid and rifapentine treatment shows promise in eliminating persister Mycobacterium tuberculosis cells.
    • This therapeutic approach could significantly reduce the reservoir of LTBI, a critical step towards TB eradication.
    • The findings support the potential for a world free from tuberculosis through effective treatment strategies.