Changes in the saliva proteome analysed by gel-proteomics in horses diagnosed with equine gastric ulcer syndrome (EGUS) at diagnosis and after successful treatment

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  • María José López-Martínez
  • Elsa Lamy
  • José Joaquín Cerón
  • Ignacio Ayala
  • María Dolores Contreras-Aguilar
  • Ida-Marie Holm Henriksen
  • Alberto Muñoz-Prieto
  • Hansen, Sanni

Equine gastric ulcer syndrome (EGUS) is currently one of the more frequent diseases in horses. We aimed to identify changes in the salivary proteome in horses with EGUS at diagnosis and after successful treatment by using gel proteomics. Saliva samples were collected from nine horses with EGUS before and after treatment and nine matched healthy controls. SDS-PAGE (1DE) and two-dimensional gel electrophoresis (2DE) were performed, and significantly different protein bands and spots were identified by mass spectrometry. Horses with EGUS had increases in proteins such as adenosine deaminase (ADA), triosephosphate isomerase, keratins and immuno-globulin heavy constant mu and decreases in carbonic anhydrase (CA), albumin and prolactin-induced protein. These changes would indicate various physiopathological mechanisms involved in this disease, such as the activation of the immune system, decreased stomach defence mechanisms and inflammation. The treated horses presented lower expression levels of thioredoxin (TRX) after a successful treatment, in proteomics analysis and also measured with a commercially available ELISA kit. Overall, horses with EGUS have protein changes in their saliva when measured with gel proteomics compared with healthy horses, and they also showed changes after successful treatment. These proteins could be potential biomarkers for detection and monitoring treatment response in EGUS.

OriginalsprogEngelsk
Artikelnummer105112
TidsskriftResearch in Veterinary Science
Vol/bind167
Antal sider9
ISSN0034-5288
DOI
StatusUdgivet - 2024

Bibliografisk note

Funding Information:
M.J.L.-M. was funded by 21293/FPI/19 , Fundación Séneca, Región de Murcia (Spain). A.M.-P. was funded by a post-doctoral fellowship “Ramón y Cajal” supported by the Ministerio de Ciencia e Innovación , Agencia Estatal de Investigación (AEI), Spain, and The European Next Generation Funds (NextgenerationEU) ( RYC2021–033660-I ).

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© 2023 The Authors

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