Biomarkers of bone metabolism in horses: Ante-mortem versus post-mortem correlation in serum and aqueous humour

Summary The objective of this study was to determine the correlation between ante-mortem and 24-hour postmortem concentrations of four markers of bone metabolism in equine serum and aqueous humour. The markers evaluated were osteocalcin, bone alkaline phosphatase, carboxyterminal propeptide of type-1 procollagen and carboxyterminal cross-linked telopeptide of type-1 collagen (ICTP). The concentrations of these markers were poorly correlated (P > 0.05) between aqueous humour and serum. ICTP was the only serum marker significantly correlated (r = 0.93) between ante- and post-mortem samples. ICTP is, therefore, a potential marker for evaluating antemortem markers of bone metabolism in dead horses.

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