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First confirmed case of nasal pythiosis in a horse in Thailand

Walaiporn Tonpitak1, Watcharapol Pathomsakulwong2, Chulabha Sornklien1

  • 1Department of Microbiology, Faculty of Veterinary Medicine, Mahanakorn University of Technology, Bangkok, Thailand.

JMM Case Reports
|March 24, 2018
PubMed
Abstract

Insights

This study reports the first case of nasal pythiosis in a horse in Thailand, caused by Pythium insidiosum. Diagnosis confirmed the infection through various techniques, highlighting a rare occurrence in equine nasal cavities.

Area of Science:

  • Veterinary Mycology
  • Infectious Diseases

Background:

  • Pythiosis, caused by the oomycete Pythium insidiosum, affects animals and humans globally.
  • Equine pythiosis typically presents as skin and subcutaneous lesions, with nasal involvement being rare.
  • No previous reports of animal pythiosis exist in Thailand, despite numerous human cases.

Observation:

  • A case of pythiosis in a horse with nasal cavity infection is presented.
  • Diagnostic methods included zoospore formation, immunohistochemistry, immunochromatography, and sequence analysis.

Findings:

  • Sequence analysis confirmed the isolate as Pythium insidiosum, with high similarity to human and equine isolates.
  • This case represents the first documented instance of nasal equine pythiosis in Thailand.

Implications:

  • This finding expands the known clinical presentations of equine pythiosis.
  • It underscores the importance of considering Pythium insidiosum in differential diagnoses for nasal infections in horses in Thailand.
  • Highlights the need for further research into the epidemiology of pythiosis in Thailand.
Keywords:
Pythium insidiosumThailandhorsepythiosis

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