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Journal of comparative pathology2019; 169; 30-34; doi: 10.1016/j.jcpa.2019.04.001

Granulomatous Rhinitis in a Horse due to Mycobacterium intracellulare Infection.

Abstract: Mycobacterial infections in horses are uncommon, but are caused most frequently by Mycobacterium bovis of the Mycobacterium tuberculosis complex or Mycobacterium avium of the M. avium complex. Disease caused by Mycobacterium intracellulare, the second most common species within the M. avium complex, has not been reported in horses to date. Mycobacteriosis in horses most often presents as enteric, pulmonary or, rarely, systemic disease. Here we report a case of M. intracellulare infection in a horse presenting as a granulomatous nasal mass.
Publication Date: 2019-05-14 PubMed ID: 31159948PubMed Central: PMC6550339DOI: 10.1016/j.jcpa.2019.04.001Google Scholar: Lookup
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Summary

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This research paper discusses a unique case of Mycobacterium intracellulare infection in a horse. This type of infection is uncommon in horses and typically presents as enteric, pulmonary, or systemic disease. However, in this case, it presented as a granulomatous nasal mass.

Mycobacterial Infections and Horses

  • The authors start by stating that infections caused by Mycobacterium, a type of bacteria, are not common in horses.
  • When they do occur, they are typically caused either by Mycobacterium bovis, which is part of the larger Mycobacterium tuberculosis complex, or Mycobacterium avium, which belongs to the M. avium complex.

Debut of Mycobacterium intracellulare Infection in Horses

  • In this particular case, the infection was caused by Mycobacterium intracellulare, a species within the M. avium complex and is the second most common species.
  • This is the first time that an infection caused by M. intracellulare has been reported in horses.

The Presentation of Mycobacteriosis in Horses

  • Mycobacteriosis, the disease caused by Mycobacterium, typically presents in horses as enteric (relating to the intestines), pulmonary (relating to the lungs), or systemic (affecting the whole body) disease.
  • This means that the bacteria can cause various types of illness, depending on whether they mainly affect the horse’s intestines, lungs, or the whole body.

A Unique Case of M. intracellulare Infection

  • However, in this study, the researchers report a unique case where a horse infected with M. intracellulare developed a granulomatous nasal mass, which is a lesion or lump in the horse’s nasal passageway caused by inflammation.
  • So instead of primarily affecting the intestines, lungs, or the whole body as is usually the case, this particular infection was localized to the nasal area of the horse.

Cite This Article

APA
Vail KJ, Stranahan LW, Richardson LM, Yanchik AE, Arnold CE, Porter BF, Wiener DJ. (2019). Granulomatous Rhinitis in a Horse due to Mycobacterium intracellulare Infection. J Comp Pathol, 169, 30-34. https://doi.org/10.1016/j.jcpa.2019.04.001

Publication

ISSN: 1532-3129
NlmUniqueID: 0102444
Country: England
Language: English
Volume: 169
Pages: 30-34
PII: S0021-9975(19)30054-4

Researcher Affiliations

Vail, K J
  • Department of Veterinary Pathobiology, College of Veterinary Medicine and Biomedical Sciences, Texas A&M University, College Station, Texas, USA. Electronic address: kvail@cvm.tamu.edu.
Stranahan, L W
  • Department of Veterinary Pathobiology, College of Veterinary Medicine and Biomedical Sciences, Texas A&M University, College Station, Texas, USA.
Richardson, L M
  • Department of Large Animal Clinical Sciences, College of Veterinary Medicine and Biomedical Sciences, Texas A&M University, College Station, Texas, USA.
Yanchik, A E
  • Department of Large Animal Clinical Sciences, College of Veterinary Medicine and Biomedical Sciences, Texas A&M University, College Station, Texas, USA.
Arnold, C E
  • Department of Large Animal Clinical Sciences, College of Veterinary Medicine and Biomedical Sciences, Texas A&M University, College Station, Texas, USA.
Porter, B F
  • Department of Veterinary Pathobiology, College of Veterinary Medicine and Biomedical Sciences, Texas A&M University, College Station, Texas, USA.
Wiener, D J
  • Department of Veterinary Pathobiology, College of Veterinary Medicine and Biomedical Sciences, Texas A&M University, College Station, Texas, USA.

MeSH Terms

  • Animals
  • Granuloma / veterinary
  • Horse Diseases / microbiology
  • Horse Diseases / pathology
  • Horses
  • Male
  • Mycobacterium avium-intracellulare Infection / veterinary
  • Rhinitis / veterinary

Grant Funding

  • T32 OD011083 / NIH HHS

Conflict of Interest Statement

Conflict of Interest Statement. The authors declare no potential conflicts of interest with respect to the research, authorship and/or publication of this article.

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Citations

This article has been cited 2 times.
  1. Li L, Maboni G, Lack A, Gomez DE. Nontuberculous Mycobacteria in Horses: A Narrative Review.. Vet Sci 2023 Jul 6;10(7).
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  2. Kar A, Satapathy S, Bepari K, Panda S, Kar A, Satapathy S. Systematic identification and characterization of clinical and socio-economical correlates of granulomatous nasal and para-nasal sinuses: A large-scale study among patients of Odisha, India.. Heliyon 2022 Sep;8(9):e10741.
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