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Related Concept Videos

Pulmonary Tuberculosis II01:28

Pulmonary Tuberculosis II

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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...
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Pulmonary Tuberculosis I01:29

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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 IV01:26

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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.
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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.
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Pulmonary Tuberculosis III01:31

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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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Other Pulmonary Disorders01:17

Other Pulmonary Disorders

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Respiratory disorders encompass a range of conditions with varying levels of severity. Asthma, marked by chronic airway inflammation and hypersensitivity, is one such condition. It can lead to airway obstruction due to factors like bronchial spasms, mucosal edema, increased mucus secretion, or epithelial damage. Asthma triggers are diverse, ranging from allergens to emotional upset, and treatment focuses on both immediate relief through bronchodilators and long-term inflammation suppression.
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Updated: Feb 16, 2026

A 3D Human Lung Tissue Model for Functional Studies on Mycobacterium tuberculosis Infection
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[Pulmonary Immune Mechanisms in Tuberculosis].

C Herzmann1, T Dallenga2, U Kalinke3

  • 1Forschungszentrum Borstel, Klinisches Studienzentrum, Borstel.

Pneumologie (Stuttgart, Germany)
|December 23, 2017
PubMed
Summary
This summary is machine-generated.

Tuberculosis (TB) is inhaled via Mycobacterium tuberculosis aerosols, primarily affecting the lungs. This review details the complex pulmonary immune responses, from innate to adaptive T cell immunity, during TB infection and treatment.

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Area of Science:

  • Immunology
  • Infectious Diseases
  • Pulmonology

Background:

  • Tuberculosis (TB) is primarily transmitted through inhalation of Mycobacterium tuberculosis aerosols, with 75% of patients exhibiting pulmonary manifestations.
  • Pulmonary immune responses to TB are complex and not fully understood, involving both innate and adaptive immunity.
  • While innate immune cells are thought to control initial mycobacterial growth, their efficacy in vivo is difficult to assess.

Purpose of the Study:

  • To provide a comprehensive overview of the current understanding of pulmonary immune mechanisms in tuberculosis.
  • To elucidate the roles of innate and adaptive immunity in different stages of TB, including exposure, latent infection, active disease, and therapy.

Main Methods:

  • This article is a review, synthesizing existing knowledge on pulmonary immune responses in TB.
  • It discusses the interplay of various immune cells and pathways involved in controlling Mycobacterium tuberculosis.
  • The review covers immunological aspects from initial exposure through to treatment outcomes.

Main Results:

  • Innate immune cells are believed to be the first line of defense against inhaled Mycobacterium tuberculosis.
  • Adaptive immune responses, particularly CD4+ and CD8+ T cells, are crucial for controlling bacterial growth.
  • Humoral (antibody-mediated) immune responses appear to play a less significant role in TB control.

Conclusions:

  • Understanding pulmonary immune mechanisms is critical for developing effective TB therapies.
  • Both innate and adaptive immune responses, especially T cell-mediated immunity, are vital in managing tuberculosis.
  • Further research is needed to fully elucidate the in vivo dynamics of pulmonary immune responses during TB infection and treatment.