Applications of equine models of acute inflammation. The Ciba-Geigy Prize for Research in Animal Health.

This research focuses on how certain anti-inflammatory drugs, particularly non-steroidal anti-inflammatory drugs (NSAIDs), react to acute inflammation in horses. With the development of reproducible models of acute inflammation, the role and efficiency of these drugs were closely studied, with interesting and unexpected findings.

Research Background and Purpose

• The essence of this research is to study the effectiveness of common anti-inflammatory medications, especially non-steroidal anti-inflammatory drugs (NSAIDs), in managing acute inflammation in horses.
• The study capitalized on the accessibility and readiness of inflammation models that can replicate acute inflammation and the ease with which inflammation exudate (fluid resulting from inflammation that can contain plasma proteins, white blood cells, and other cellular debris) can be harvested.
• The research aims to create a firmer link between the action of NSAIDs in blocking the production of eicosanoids (compounds that heavily influence the body’s response to injury or disease) and the suppression of inflammatory heat.

Methods and Findings

• The researchers discovered that NSAIDs tend to accumulate in exudate, which could explain their sustained action in preventing the synthesis of exudate eicosanoid. This confirms prior clinical experiences with these drugs.
• A new NSAID, BW540C, inhibits two pathways of arachidonic acid metabolism, namely, cyclo-oxygenase and lipoxygenase pathways. Arachidonic acid metabolism involves steps necessary for the production of eicosanoids.
• The anti-inflammatory steroids, betamethasone and dexamethasone, have been evaluated in the equine inflammation models, resulting in intriguing findings.

Conclusion and Implications

• The paper underlines the complex interrelationships between the inflammation process and the actions and outcomes of anti-inflammatory medications.
• These findings would be instrumental in understanding the mechanisms by which NSAIDs and other anti-inflammatory drugs work, potentially leading to the development of more effective treatment strategies for managing acute inflammation in horses.