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Field study examining the mucosal microbiome in equine glandular gastric disease

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Listed:
  • Linda J Paul
  • Aaron C Ericsson
  • Frank M Andrews
  • Zachary McAdams
  • Michael L Keowen
  • Michael P St Blanc
  • Heidi E Banse

Abstract

Equine glandular gastric disease (EGGD) is a common disease among athletic horses that can negatively impact health and performance. The pathophysiology of this EGGD remains poorly understood. Previous studies using controlled populations of horses identified differences in the gastric glandular mucosal microbiome associated with disease. The objective of this study was to compare the gastric microbiome in horses with EGGD and those without across multiple barns and differing management practices. We hypothesized that alterations in the microbiome of the gastric glandular mucosa are associated with EGGD. A secondary objective was to perform a risk factor analysis for EGGD using the diet and management data collected. Microbial populations of biopsies from normal pyloric mucosa of horses without EGGD (control biopsies), normal pyloric mucosa of horses with EGGD (normal biopsies) and areas of glandular mucosal disruption in horses with EGGD (lesion biopsies) were compared. Lesion biopsies had a different microbial community structure than control biopsies. Control biopsies had a higher read count for the phylum Actinomycetota compared to lesion biopsies. Control biopsies also had an enrichment of the genera Staphylococcus and Lawsonella and the species Streptococcus salivarius. Lesion biopsies had an enrichment of the genera Lactobacillus and Actinobacillus and the species Lactobacillus equigenerosi. These results demonstrate differences in the gastric glandular microbiome between sites of disrupted mucosa in horses with EGGD compared to pyloric mucosa of horses without EGGD. Risk factor analysis indicated that exercise duration per week was a risk factor for EGGD.

Suggested Citation

  • Linda J Paul & Aaron C Ericsson & Frank M Andrews & Zachary McAdams & Michael L Keowen & Michael P St Blanc & Heidi E Banse, 2023. "Field study examining the mucosal microbiome in equine glandular gastric disease," PLOS ONE, Public Library of Science, vol. 18(12), pages 1-12, December.
    • Handle: RePEc:plo:pone00:0295697
    DOI: 10.1371/journal.pone.0295697
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    References listed on IDEAS

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    1. Aaron C Ericsson & J Wade Davis & William Spollen & Nathan Bivens & Scott Givan & Catherine E Hagan & Mark McIntosh & Craig L Franklin, 2015. "Effects of Vendor and Genetic Background on the Composition of the Fecal Microbiota of Inbred Mice," PLOS ONE, Public Library of Science, vol. 10(2), pages 1-19, February.
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