Serum proteomic analysis in equine obstructive colic: A prospective observational study.
Authors: Alterisio Maria Chiara, Iacobucci Ilaria, Guccione Jacopo, Celentano Simona, Monti Maria, Ciaramella Paolo
Journal: Veterinary journal (London, England : 1997)
Summary
# Editorial Summary: Serum Proteomic Analysis in Equine Obstructive Colic Alterisio and colleagues employed serum proteomic profiling to characterise the molecular pathology underlying simple obstructive colic, seeking to identify diagnostic biomarkers that could support earlier clinical intervention. Seven horses presenting with obstructive colic underwent blood sampling at admission and again following recovery after conservative management, with proteomic analysis supplemented by standard haematobiochemical and inflammatory markers, validated using Multiple Reaction Monitoring methodology. Seventy proteins demonstrated significant expression changes between admission and recovery; notably, immune-response proteins (including haptoglobin with a 7.36-fold change) and coagulation factors showed marked dysregulation, whilst lipid-associated proteins (apolipoprotein A4, E, and lecithin-cholesterol acyltransferase) were substantially downregulated, suggesting concurrent hyperlipidaemia. These findings indicate that obstructive colic involves a complex interplay of systemic inflammation, probable bacterial translocation triggering immune activation, and lipid dysmetabolism—a triad that extends beyond simple mechanical obstruction. For practitioners, this proteomic signature offers potential biomarker candidates for more sensitive early detection of obstructive colic and may ultimately inform prognostic stratification, though further validation in larger cohorts will be essential before clinical application.
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Practical Takeaways
- •Serum proteomic signatures may provide objective biomarkers for early detection and monitoring of obstructive colic, potentially improving prognosis through earlier intervention
- •The concurrent dysregulation of immune, coagulation, and lipid metabolism pathways suggests obstructive colic involves complex systemic complications beyond simple mechanical obstruction
- •Proteomic profiling could help differentiate obstructive from simple colic and guide therapy decisions in field settings if translated into practical diagnostic tools
Key Findings
- •Serum proteomic analysis identified 70 significantly different proteins between admission and recovery in horses with obstructive colic
- •Immune response proteins (C2, CFB, HPX, LTF, PSMA7) were substantially altered, suggesting active inflammatory status and possible bacterial translocation
- •Blood coagulation proteins (VWF, F13A1, F13B, PRDX2, FBLN1, KNG1) showed significant dysregulation with fold changes ranging from -0.41 to -3.86
- •Lipid homeostasis proteins (APOA4, APOA5, APOE, LCAT) were downregulated, indicating concurrent hyperlipidemia in obstructive colic cases