Alterations in the Peritoneal Fluid Proteome of Horses with Colic Attributed to Ischemic and Non-Ischemic Intestinal Disease
Authors: R. Bishop, Justine Arrington, Pamela A Wilkins, Annette M McCoy
Journal: Animals : an Open Access Journal from MDPI
Summary
# Editorial Summary Colic remains a leading cause of mortality and morbidity in horses, yet current diagnostic tools struggle to reliably identify which surgical cases will develop life-threatening post-operative complications. Researchers collected and analysed peritoneal fluid samples from colic cases at a tertiary hospital, categorising horses by lesion type (ischaemic versus non-ischaemic) and anatomical location (small versus large intestine) to characterise the protein composition associated with each condition. The proteomic analysis revealed that ischaemic and small intestinal lesions produced distinct protein signatures centred on immune activation, inflammatory pathways, and lipid metabolism processes—the latter representing a previously unrecognised mechanism in ischaemic intestinal disease. These findings suggest that targeted protein biomarkers derived from peritoneal fluid analysis could potentially offer more objective prognostic information than current assessment methods, ultimately helping practitioners make better-informed decisions about surgical candidates and post-operative management. Further validation work is needed to determine whether measuring specific proteins in peritoneal fluid can be translated into a practical clinical test that improves outcomes for horses presenting with acute abdominal disease.
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Practical Takeaways
- •Current peritoneal fluid diagnostic tests for colic prognosis are unreliable; this proteomic analysis may identify better objective markers to predict post-operative complications
- •Specific protein signatures in peritoneal fluid could help differentiate ischemic from non-ischemic colic lesions, potentially improving clinical decision-making and surgical planning
- •These protein findings may eventually enable development of a diagnostic test to identify high-risk colic cases before post-operative deterioration occurs
Key Findings
- •Peritoneal fluid proteome differs significantly between horses with ischemic versus non-ischemic intestinal colic
- •Proteins associated with ischemic and small intestinal lesions are involved in immune, inflammatory, and lipid metabolism pathways
- •Identified proteins represent novel biomarker candidates not previously described in ischemic intestinal disease pathophysiology