In vitro evaluation of defined oligosaccharide fractions in an equine model of inflammation.
Authors: Vendrig Johannes Cornelis, Coffeng Luc Edgar, Fink-Gremmels Johanna
Journal: BMC veterinary research
Summary
# Editorial Summary Oligosaccharides are increasingly used as dietary supplements in equine practice with claims of both prebiotic and immunomodulatory benefits, yet the direct mechanisms by which they modulate immune function remain poorly understood. Cornelis and colleagues used an in vitro model with equine peripheral blood mononuclear cells (PBMCs) challenged with lipopolysaccharide (LPS) to test three defined oligosaccharide formulations—galacto-oligosaccharides (GOS) alone, GOS combined with fructo-oligosaccharides (FOS), and a triple combination of GOS, FOS, and acidic oligosaccharides (AOS)—at varying concentrations, whilst accounting for the minor endotoxin content and inter-horse variation through Bayesian statistical modelling. The study identified concentration- and formulation-dependent effects on the LPS-induced inflammatory cascade, with specific oligosaccharide combinations showing differential capacity to modulate key inflammatory markers in equine immune cells. These findings provide mechanistic insight into how specific oligosaccharide supplements may exert their reported clinical benefits, suggesting that practitioners selecting prebiotic supplements should consider formulation composition rather than treating all oligosaccharide products as therapeutically equivalent, and that further research linking these in vitro responses to in vivo clinical outcomes would strengthen evidence-based supplementation protocols.
Read the full abstract on PubMed
Practical Takeaways
- •Oligosaccharide supplementation may offer direct immunomodulatory benefits in horses by attenuating inflammatory responses, supporting use as performance and health supplements
- •GOS, FOS, and AOS combinations show promise for managing inflammation-related conditions, though in vivo clinical efficacy in horses still requires further investigation
- •Consider oligosaccharide supplementation as a potential preventive strategy for inflammatory conditions, particularly those related to immune dysregulation
Key Findings
- •Three oligosaccharide fractions (GOS alone, GOS+FOS combination, and GOS+FOS+AOS triple combination) were evaluated for immunomodulatory effects on equine PBMCs
- •Oligosaccharide products demonstrated concentration-dependent effects on LPS-induced inflammatory responses in equine peripheral blood mononuclear cells
- •Defined oligosaccharide fractions modulated immune responses through direct effects on equine immune cells independent of prebiotic mechanisms