Abstract
Sixty-one horses were enrolled in this study and divided into 3 different groups according to their severity of colic (heart rate, oral mucous membrane color, and abdominal distention): a strangulating colic (SC) group (n=21), non-strangulating colic (NC) group (n=20), and control group (n=20) consisting of randomly selected normal horses without signs of colic. The serum concentrations of haptoglobin, tumor necrosis factor-α (TNFα), nitric oxide (NO), malondialdehyde (MDA), zinc, iron, and copper were evaluated in all horses. The average concentration of TNFα in the SC group was higher than that in the control group (P<0.001). The TNFα concentration was higher in the NC group compared with the control group (P<0.001). Furthermore, the average concentration of TNFα tended to be higher in the SC group compared with the NC group (P=0.052). The average concentration of haptoglobin in the SC group was higher than that in the control group (P<0.001). The average concentration of NO was higher in the SC group compared with the NC group. (P=0.016) The average concentration of MDA was higher in the SC group compared with the control group (P=0.042). Furthermore, the concentration of MDA was higher in the SC group compared with the NC group (P=0.048). TNFα in horses with signs of colic may be a reliable indicator of prognosis and the severity of clinical signs. The haptoglobin concentration may be a useful marker in cases where animals are referred to clinicians a few days after the onset of colic. The concentrations of MDA and NO should be interpreted with caution.
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