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Pharmacokinetics and local tolerance of cefovecin sodium after intra‐articular administration in horses
Authors:M Pérez‐Nogués  T Encinas  J López‐SanRoman
Institution:1. Departament of Medicina y Cirugía Animal, Facultad de Veterinaria, Universidad Complutense de Madrid, Madrid, Spain;2. Department of Toxicología y Farmacología, Facultad de Veterinaria, Universidad Complutense de Madrid, Madrid, Spain
Abstract:Searching for new therapeutic options against septic arthritis in horses, this research was focused on the study of the kinetics and local side effects after the intra‐articular treatment of horses with cefovecin sodium. A single dose (240 mg) of the drug (Convenia®) was administered into the radiocarpal joint of adult healthy horses (n = 6), and drug concentrations in plasma and synovial fluid were determined by high‐performance liquid chromatography (HPLC). Local tolerance was also studied based on the modification of different joint physiopathological parameters (pH, cellular, and protein concentration in synovial fluid). Although no clinically relevant joint damage was noticed, significant increases in the protein concentrations at 5 min and in the cellular concentration at 30 min after cefovecin administration were observed in the treated radiocarpal joints. The duration of the cefovecin above the minimal inhibitory concentration (MIC) ≤1 μg/mL was 28.80 ± 2.58 h in the radiocarpal joint and 16.00 ± 2.86 h in plasma. The results of this study showed that intra‐articular administration of cefovecin sodium in horses could be considered in the future to manage septic arthritis in horses, as it offers a good pharmacokinetic behavior and good local tolerance.
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