ArticleVeterinary ophthalmology2026
The Impact of Systemic Treatment With Flunixin Meglumine on the Two Antiproteases Alpha-2-Macroglobulin (A2M) and Alpha-1-Antitrypsin (A1AT) in Equine Plasma and Platelet-Rich Fibrin (PRF).
Article in Veterinary ophthalmology, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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Abstract
purposeTo evaluate the effect of flunixin meglumine, a systemic non-steroidal anti-inflammatory drug (NSAID), on the antiproteases, A2M and A1AT, in equine plasma and PRF.
methodsA prospective cross-sectional study. Plasma, solid PRF, and liquid PRF were collected from a control-group that included healthy horses not treated with NSAIDs within the last 3 months. The NSAID-group were ophthalmology patients with no systemic inflammatory disease, and all received a full dose of flunixin meglumine (1.1 mg/kg BID PO or IV) for three or more days prior to collection. Samples were collected and prepared using a standardized protocol for plasma and PRF preparation. Concentrations of A2M and A1AT were analyzed with ELISA kits. Statistical analysis with Mann-Whitney U tests and Wilcoxon signed-rank tests was performed using significance set at p < 0.05.
resultsNo significant differences were found between the control-group (n = 12) and NSAID-group (n = 12) for any of the blood products (p > 0.05). Plasma had a significantly higher amount of A2M compared to solid and liquid PRF (both p < 0.001). Solid PRF had the highest concentration of A1AT and was significantly higher when compared to liquid PRF (p < 0.001), but not when compared to plasma (p = 0.071).
conclusionsThe systemic NSAID, flunixin meglumine, does not appear to significantly alter antiprotease concentrations in equine plasma or PRF. Although PRF should not be used as a replacement for plasma, solid PRF may be a good adjunctive therapy for the treatment of keratomalacia due to its high A1AT concentration.
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