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Related Concept Videos

Pulmonary Tuberculosis IV01:26

Pulmonary 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...
Pulmonary Tuberculosis II01:28

Pulmonary 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...
Tuberculosis01:23

Tuberculosis

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...
Pulmonary Tuberculosis III01:31

Pulmonary Tuberculosis III

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:
Pulmonary Tuberculosis I01:29

Pulmonary 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...
Pulmonary Tuberculosis V01:28

Pulmonary 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...

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A Suction Blister Protocol to Study Human T-cell Recall Responses In Vivo
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Published on: August 11, 2018

Early T-cell responses in tuberculosis immunity.

Gary M Winslow1, Andrea Cooper, William Reiley

  • 1New York State Department of Health, Wadsworth Center, Albany, NY 12208, USA. gary.winslow@wadsworth.org

Immunological Reviews
|October 8, 2008
PubMed
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Tuberculosis (TB) is an emerging infectious disease where CD4(+) T-cell responses are crucial for immunity. Understanding early T-cell activation in response to Mycobacterium tuberculosis (Mtb) infection is key to controlling TB.

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Area of Science:

  • Immunology
  • Infectious Diseases
  • Microbiology

Background:

  • Tuberculosis (TB) remains a significant global health challenge, classified as an emerging infectious disease due to increasing prevalence.
  • Effective immunity against Mycobacterium tuberculosis (Mtb) critically relies on CD4(+) T-cell responses.
  • Current vaccination strategies do not achieve sterile immunity, highlighting the need for improved control measures.

Purpose of the Study:

  • To review recent research on the early development of T-cell immunity following Mtb infection in mice.
  • To identify factors regulating the delayed T-cell response initiation in Mtb infection.
  • To understand the critical window during which Mtb establishes infection before T-cell activation.

Main Methods:

  • Review of recent scientific literature on T-cell responses to Mtb infection in mouse models.
  • Analysis of studies investigating the timing and regulation of early T-cell activation post-Mtb exposure.
  • Synthesis of findings related to the host-pathogen interaction during the initial phase of infection.

Main Results:

  • Early T-cell responses are protective in controlling Mtb infection in the lungs.
  • The initiation of the T-cell response to Mtb is significantly delayed compared to other airborne infections.
  • This delay creates a critical period for Mtb to establish infection before adaptive immunity is fully engaged.

Conclusions:

  • Understanding the regulation of early T-cell activation is crucial for developing better strategies to control TB.
  • The delayed immune response presents a therapeutic target for preventing Mtb establishment.
  • Further research in mouse models can elucidate mechanisms to enhance early protective immunity against TB.