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|Author(s) :||J.L. Otero, N. Mestorino & J.O. Errecalde|
The disposition of enrofloxacin in sheep was investigated after single-dose intravenous administration of 2.5 mg/kg body weight. Blood samples were drawn from the jugular vein at predetermined times after drug administration. Plasma concentrations of enrofloxacin and its active metabolite ciprofloxacin were simultaneously determined by reverse-phase high performance liquid chromatography. The data collected were subjected to non-compartmental and compartmental kinetic analysis. Statistical model theory was used to determine non-compartmental pharmacokinetic parameters. Disposition of enrofloxacin was described by a three-compartment open model with elimination from the central compartment following intravascular administration. The elimination half-life, the volume of distribution, and the area under the concentration vs time curve (AUC) were 4.31 h, 1.10 l/kg and 9.24 µg·h/ml, respectively. Enrofloxacin was metabolised to ciprofloxacin and the ratio between the AUCs of ciprofloxacin and enrofloxacin was 0.26 after intravenous administration.
Ciprofloxacin – Enrofloxacin – Intravenous – Pharmacokinetic – Sheep.