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Clinical patterns of equine exercise-associated myopathies

Clinical patterns of equine exercise-associated myopathies
  • Routine muscle histopathology was not helpful in sub-categorising the phenotypes

Equine exercise-associated myopathies are prevalent, clinically heterogeneous, generally idiopathic disorders characterised by episodes of myofibre damage that occur in association with exercise. Episodes are intermittent and vary within and between affected horses and across breeds. The aetiopathogenesis is often unclear; there might be multiple causes. Poor phenotypic characterisation hinders genetic and other disease analyses. The objective of this study was to characterise phenotypic patterns across exercise-associated myopathies in horses. Historical clinical and histological features from muscle samples (n = 109) were used for k-means clustering and validated using principal components analysis and hierarchical clustering. For further validation, a blinded histological study ...

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