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Related Experiment Videos

Mycobacterium marinum.

Alexandra Aubry1,2,3, Faiza Mougari1,4,5, Florence Reibel1,2,3

  • 1Centre National de Référence des mycobactéries et résistance des Mycobactéries aux antituberculeux.

Microbiology Spectrum
|April 8, 2017
PubMed
Summary

Mycobacterium marinum causes skin and soft tissue infections, often from fish or water contact. Early diagnosis and combined treatment of surgery and antibiotics are key for managing these nontuberculous mycobacteria infections.

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Area of Science:

  • Infectious Diseases
  • Microbiology
  • Dermatology

Background:

  • Mycobacterium marinum is a leading cause of extrarespiratory nontuberculous mycobacteria (NTM) infections worldwide.
  • It causes skin and soft tissue infections, particularly in individuals with exposure to fish or water.
  • Its genetic similarity to Mycobacterium tuberculosis and ability to mimic TB pathogenesis in fish make it a subject of scientific interest.

Purpose of the Study:

  • To summarize the clinical and microbiological aspects of Mycobacterium marinum infections.
  • To highlight diagnostic challenges and current treatment strategies.
  • To provide insights into prevention methods.

Main Methods:

  • Review of clinical presentations and diagnostic difficulties.

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  • Discussion of microbiological characteristics, including slow growth and low-temperature requirements.
  • Analysis of current treatment approaches and outcomes.

    • Main Results:

    • Diagnosis is often suspected based on exposure history (fishkeeping, swimming) and characteristic skin lesions.
    • Microbiological diagnosis can be challenging due to slow growth and specific temperature needs.
    • Treatment typically involves a combination of surgery and antibiotics (e.g., tetracyclines, rifampin), with variable success in deep tissue infections.

    Conclusions:

    • Mycobacterium marinum infections require a high index of suspicion based on patient history and clinical signs.
    • Standardized diagnostic and treatment protocols are lacking.
    • Prevention through protective measures and disinfection is recommended for at-risk individuals.