title: Pharmacokinetics after intravenous, intramuscular and subcutaneous administration of moxifloxacin in sheep.
abstract: The disposition kinetics of moxifloxacin, a fluoroquinolone antibiotic, after intravenous (IV), intramuscular (IM) and subcutaneous (SC) administration was determined in sheep at a single dose of 5mg/kg. The concentration-time data were analysed by compartmental (after IV dose) and non-compartmental (after IV, IM and SC administration) pharmacokinetic methods. Plasma concentrations of moxifloxacin were determined by high performance liquid chromatography with fluorescence detection. Steady-state volume of distribution (V(ss)) and clearance (Cl) of moxifloxacin after IV administration were 2.03+/-0.36L/kg and 0.39+/-0.04L/hkg, respectively. Following IM and SC administration, moxifloxacin achieved maximum plasma concentration of 1.66+/-0.62mg/L and 0.90+/-0.19mg/L at 2.25+/-0.88h and 3.25+/-1.17h, respectively. The absolute bioavailabilities after IM and SC routes were 96.12+/-32.70% and 102.20+/-23.76%, respectively. From these data (kinetic parameters and absence of adverse reactions) moxifloxacin may be a potentially useful antibiotic in sheep.
authors.affiliation: Department of Pharmacology, Faculty of Veterinary Medicine, University of Murcia, Campus de Espinardo, 30071 Murcia, Spain.
authors.forename: Carlos M
authors.initials: CM
authors.lastname: Cárceles
authors.forename: Elisa
authors.initials: E
authors.lastname: Escudero
authors.forename: Emilio
authors.initials: E
authors.lastname: Fernández-Varón
authors.forename: Pedro
authors.initials: P
authors.lastname: Marín
mesh_terms: D000818:Animals; D000900:Anti-Bacterial Agents / Q000008:administration & dosage* / Q000493:pharmacokinetics*; D019540:Area Under Curve; D001372:Aza Compounds / Q000008:administration & dosage* / Q000493:pharmacokinetics*; D018592:Cross-Over Studies; D005260:Female; D024841:Fluoroquinolones; D006207:Half-Life; D007273:Injections, Intramuscular; D007275:Injections, Intravenous; D007279:Injections, Subcutaneous; D000077266:Moxifloxacin; D011804:Quinolines / Q000008:administration & dosage* / Q000493:pharmacokinetics*; D012756:Sheep / Q000097:blood* / Q000378:metabolism*
chemical_list: D000900:Anti-Bacterial Agents; D001372:Aza Compounds; D024841:Fluoroquinolones; D011804:Quinolines; D000077266:Moxifloxacin