Pharmacokinetic indices for cefovecin after single-dose administration to adult sea otters (Enhydra lutris)

E. A. Lee, Barbara A Byrne, M. A. Young, M. Murray, M. A. Miller, Lisa A Tell

Research output: Contribution to journalArticlepeer-review

3 Scopus citations


Seven sea otters received a single subcutaneous dose of cefovecin at 8 mg/kg body weight. Plasma samples were collected at predetermined time points and assayed for total cefovecin concentrations using ultra-performance liquid chromatography and tandem mass spectrometry. The mean (±SD) noncompartmental pharmacokinetic indices were as follows: CMax (obs) 70.6 ± 14.6 μg/mL, TMax (obs) 2.9 ± 1.5 h, elimination rate constant (kel) 0.017 ± 0.002/h, elimination half-life (t1/2kel) 41.6 ± 4.7 h, area under the plasma concentration-vs.-time curve to last sample (AUClast) 3438.7 ± 437.7 h·μg/mL and AUC extrapolated to infinity (AUC0→∞) 3447.8 ± 439.0 h·μg/mL. The minimum inhibitory concentrations (MIC) for select isolates were determined and used to suggest possible dosing intervals of 10 days, 5 days, and 2.5 days for gram-positive, gram-negative, and Vibrio parahaemolyticus bacterial species, respectively. This study found a single subcutaneous dose of cefovecin sodium in sea otters to be clinically safe and a viable option for long-acting antimicrobial therapy. 2016 John Wiley & Sons Ltd.

Original languageEnglish (US)
JournalJournal of Veterinary Pharmacology and Therapeutics
StateAccepted/In press - 2016

ASJC Scopus subject areas

  • Pharmacology
  • veterinary(all)


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