Respiratory metabolites in bronchoalveolar lavage fluid (BALF) and exhaled breath condensate (EBC) can differentiate horses affected by severe equine asthma from healthy horses.

Summary

# Editorial Summary: Respiratory Metabolites as Diagnostic Markers in Equine Asthma Equine asthma affects over 14% of the horse population, yet diagnostic challenges persist in clinical practice, prompting researchers to explore novel biomarker approaches. Using untargeted metabolomic analysis, Bazzano and colleagues examined bronchoalveolar lavage fluid (BALF) and exhaled breath condensate (EBC) samples from both healthy and asthmatic horses to identify metabolic signatures characteristic of severe disease. The metabolomic profiles proved sufficiently distinct between the two groups to differentiate asthmatic from healthy horses, with specific metabolites showing promise as potential diagnostic indicators. These findings are particularly significant because both BALF and EBC represent minimally invasive or non-invasive sampling methods that could enhance diagnostic precision without requiring endoscopy or intensive procedures in every suspected case. For practitioners managing respiratory disease, this work suggests a future pathway towards objective, metabolite-based diagnostics that might complement or refine existing clinical assessment protocols, though further research will be needed to validate these markers in field conditions and determine their practical clinical utility.

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Key Findings

• •Untargeted metabolomic profiling of BALF and EBC successfully differentiated healthy horses from those with severe equine asthma
• •Respiratory metabolites in bronchoalveolar lavage fluid and exhaled breath condensate showed distinct signatures between asthmatic and non-asthmatic horses
• •Metabolomic approach demonstrates potential for non-invasive or minimally-invasive diagnosis of equine asthma using EBC

Conditions Studied

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