Acute-Phase Proteins of Healthy Horses and Horses Naturally Affected by Colic Syndrome.

The study investigates the difference in acute-phase proteins (APPs) in blood samples of healthy horses and those affected by colic syndrome. Also, the study outlines the potential uses of APPs as indicators for disease, treatment assessment, and prognosis in horses with colic syndrome.

Methodology

• The researchers collected blood samples from two groups of horses: 9 healthy horses, serving as a control group; and 17 horses affected by colic syndrome – further divided into those requiring clinical (G1) or surgical (G2) treatment.
• They took samples at the time of arrival at the veterinary hospital (M0) and after 24 (M1), 48 (M2), and 72 (M3) hours of the initiation of treatment.
• The APPs in the blood samples were identified and quantified using a series of sophisticated lab techniques, including polyacrylamide gel electrophoresis (SDS-PAGE), computerized densitometry, and matrix assisted laser desorption/ionization-time of flight mass spectrometry.

Findings

• Nine APPs were identified: α2-macroglobulin, ceruloplasmin, transferrin, albumin, α1-antitrypsin, haptoglobin, α1-acid glycoprotein, apolipoprotein A1, and serum amyloid A.
• Ceruloplasmin (Cp) showed a significant increase at M0 in the surgical colic group (G2) compared to the clinical colic group (G1) and the control group.
• Serum amyloid A (SAA) showed a significant increase at M3 for both G1 and G2 colic groups, compared to the control group.
• Within G1 and G2 groups, SAA levels were increased at M1, M2, and M3 time points, particulary more pronounced in the surgical colic group (G2).

Implications

• The trends in Cp and SAA levels observed in this study indicate their potential as biomarkers for evaluating acute-phase response in horses with colic syndrome.
• Cp could serve as an indicator for horses with colic syndrome that requires surgical resolution.
• The level of SAA can potentially be used to predict the prognosis of horses with colic. The increased levels of SAA at multiple time points suggest its effectiveness in differentiating between clinical or surgical treatment, and consequently, in assessing prognosis.

This study offers valuable insights that may help in the early detection, appropriate treatment, and prognosis determination of colic syndrome in horses, though further research and validation of these markers are needed for practical application.