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Related Concept Videos

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...
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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
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Defense Against Bacterial Pathogens

The human immune system is a complex network of cells, tissues, and organs that work together to defend the body against bacterial infections. It consists of various immune cells, each playing a specific role in the defense mechanism.
Phagocytes
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Microbial Interactions: Parasitism01:22

Microbial Interactions: Parasitism

Parasitism is a form of microbial interaction in which parasitic microbes exploit a host organism for nutrients and shelter, often at the host's expense. Unlike mutualistic relationships, where both organisms benefit, parasitism benefits only the parasite and harms the host.Classification of ParasitesMicrobial parasites are broadly classified based on their location relative to the host.Ectoparasites remain on the host’s surface, such as the skin or outer tissues, drawing nutrients...
Colonisation of Pathogens01:25

Colonisation of Pathogens

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Related Experiment Video

Updated: May 9, 2026

Fluorescence Assays for the Study of Mycobacterium tuberculosis Interaction with the Immune Receptor SLAMF1
07:42

Fluorescence Assays for the Study of Mycobacterium tuberculosis Interaction with the Immune Receptor SLAMF1

Published on: February 28, 2025

Host-pathogen interactions during Mycobacterium tuberculosis infections.

Sarah A Stanley1, Jeffery S Cox

  • 1School of Public Health, University of California, 500C Li Ka Shing Hall, Berkeley, CA, 94720-3370, USA.

Current Topics in Microbiology and Immunology
|July 25, 2013
PubMed
Summary

Mycobacterium tuberculosis evades the immune system by replicating within macrophages. This research explores how the bacterium interacts with host cells, focusing on the phagosomal membrane and cell wall.

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Last Updated: May 9, 2026

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Area of Science:

  • Microbiology
  • Immunology
  • Pathogenesis

Background:

  • Mycobacterium tuberculosis (M. tuberculosis) persists by evading host immune responses.
  • The pathogen replicates within macrophages, specialized immune cells designed to eliminate microbes.
  • Understanding macrophage-pathogen interactions is crucial for M. tuberculosis pathogenesis research.

Purpose of the Study:

  • To explore advances in M. tuberculosis research, focusing on cellular-level interactions with macrophages.
  • To detail mechanisms of innate macrophage-pathogen interactions.
  • To highlight the role of the phagosomal membrane and mycobacterial cell wall in pathogenesis.

Main Methods:

  • Review of recent M. tuberculosis research.
  • Focus on cellular and molecular interactions between M. tuberculosis and macrophages.
  • Analysis of host cell membrane interactions and bacterial lipid mediators.

Main Results:

  • M. tuberculosis has evolved mechanisms to survive and replicate within macrophages.
  • Interactions with the phagosomal membrane and the mycobacterial cell wall are key to pathogenesis.
  • Host cell membrane perforation is a common theme in intracellular bacterial survival.

Conclusions:

  • M. tuberculosis employs unique strategies, including lipid mediators, to interact with host cells.
  • Understanding these interactions provides insights into M. tuberculosis pathogenesis.
  • Further research is needed to uncover all mechanisms of host-pathogen interaction.