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Related Concept Videos

Pulmonary Tuberculosis II01:28

Pulmonary Tuberculosis II

343
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...
343
Pulmonary Tuberculosis III01:31

Pulmonary Tuberculosis III

439
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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Related Experiment Video

Updated: Sep 10, 2025

Identification of Virulence Markers of Mycobacterium abscessus for Intracellular Replication in Phagocytes
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P3MA: A Promising Mycobacteriophage Infecting Mycobacterium abscessus.

Antonio Broncano-Lavado1, John Jairo Aguilera-Correa2,3, Françoise Roquet-Banères2

  • 1Clinical Microbiology Department, IIS-Fundación Jiménez Díaz, Autonomous University of Madrid, 28040 Madrid, Spain.

Antibiotics (Basel, Switzerland)
|August 28, 2025
PubMed
Summary

Mycobacteriophage P3MA effectively inhibits Mycobacterium abscessus growth in planktonic, biofilm, and granuloma models. This bacteriophage shows potential for phage therapy, particularly when combined with imipenem for lung infections.

Keywords:
Mycobacterium abscessusantibioticbiofilmgranulomamycobacteriophagephage therapy

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Area of Science:

  • Microbiology
  • Bacteriophage Therapy
  • Infectious Diseases

Background:

  • Mycobacterium abscessus is an opportunistic pathogen causing difficult-to-treat infections, often requiring prolonged treatment with high recurrence rates.
  • Current treatment limitations necessitate the exploration of novel therapeutic strategies, such as bacteriophage therapy.

Purpose of the Study:

  • To characterize mycobacteriophage P3MA and evaluate its efficacy against Mycobacterium abscessus.
  • To assess the potential of P3MA as a therapeutic agent, alone and in combination with antibiotics.

Main Methods:

  • Phylogenetic analysis, electron microscopy, growth curve analysis, and biofilm assays were employed.
  • Checkerboard assays and granuloma-like medium studies were conducted to evaluate P3MA's efficacy and interactions with antibiotics.

Main Results:

  • P3MA demonstrated significant inhibition of Mycobacterium abscessus growth in planktonic and biofilm states, and within a granuloma-like model.
  • P3MA showed synergistic effects with imipenem, antagonistic effects with clarithromycin, and indifference with amikacin.

Conclusions:

  • Mycobacteriophage P3MA is a promising candidate for phage therapy against Mycobacterium abscessus infections.
  • Genetic engineering of P3MA, in combination with imipenem, could offer a novel treatment strategy for lung infections caused by this pathogen.