Influence of digital hypothermia on lamellar events related to IL-6/gp130 signalling in equine sepsis-related laminitis.

Summary

# Editorial Summary Sepsis-related laminitis remains a critical complication in equine practice, yet the precise molecular mechanisms driving lamellar failure during systemic infection remain incompletely understood. Dern and colleagues investigated the role of digital hypothermia in modulating IL-6/gp130 signalling pathways within the lamellae during experimentally induced sepsis, hypothesising that lowered digital temperatures might suppress pro-inflammatory cascades that otherwise mirror those seen in endocrinopathic laminitis models. Using controlled sepsis induction combined with therapeutic digital cooling, the team measured IL-6 expression and downstream mTORC1 activation in lamellar tissue, comparing cooled versus normothermic digital regions. Digital hypothermia significantly attenuated IL-6-mediated signalling and associated lamellar inflammatory events, suggesting that cooling may interrupt a critical pathological pathway shared between septic and endocrine forms of the disease. For practitioners, these findings support the evidence base for aggressive digital cryotherapy in sepsis cases, positioning it not merely as symptomatic support but as a targeted intervention addressing fundamental molecular drivers of lamellar failure—a distinction that may influence treatment protocols, particularly in the critical early hours when intervention is most likely to preserve structural integrity.

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Key Findings

• •IL-6 is consistently increased in digital lamellae during sepsis-related laminitis
• •IL-6 signalling through gp130 receptor activates mTORC1-related signalling pathways
• •mTORC1 signalling mechanisms are shared between sepsis-related and endocrinopathic laminitis models

Conditions Studied

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