title: Plasma concentrations of enrofloxacin after single-dose oral administration in loggerhead sea turtles (Caretta caretta).
abstract: Plasma concentrations and pharmacokinetics of enrofloxacin were determined in 12 loggerhead sea turtles (Caretta caretta) after oral administration. Six turtles in group 1 and group 2 received enrofloxacin at 10 mg/kg and 20 mg/kg of body weight, respectively. Blood was collected from the cervical sinus before administration and at timed intervals up to 168 hr following administration. Plasma concentrations of enrofloxacin were determined using a microbiologic assay. The mean peak plasma concentration (Cmax) was 4.07 microg/ml and 21.30 microg/ml for groups 1 and 2, respectively. Plasma levels were detectable at 168 hr postadministration, with mean values of 0.380 microg/ml for group I and 2.769 microg/ml for group 2. The mean elimination half-life for enrofloxacin was 37.80 hr for group I and 54.42 hr for group 2. These findings indicated that enrofloxacin is absorbed following oral administration in loggerhead sea turtles, and blood levels are maintained up to 168 hr following administration.
authors.affiliation: College of Veterinary Medicine, University of Florida, Gainesville, Florida 32610, USA.
authors.forename: Elliott
authors.initials: E
authors.lastname: Jacobson
authors.forename: Ronald
authors.initials: R
authors.lastname: Gronwall
authors.forename: Lara
authors.initials: L
authors.lastname: Maxwell
authors.forename: Kelly
authors.initials: K
authors.lastname: Merrit
authors.forename: Glenn
authors.initials: G
authors.lastname: Harman
mesh_terms: D000284:Administration, Oral; D000818:Animals; D000900:Anti-Bacterial Agents / Q000493:pharmacokinetics*; D019540:Area Under Curve; D004305:Dose-Response Relationship, Drug; D000077422:Enrofloxacin; D005260:Female; D024841:Fluoroquinolones / Q000008:administration & dosage / Q000097:blood / Q000493:pharmacokinetics*; D008297:Male; D014426:Turtles / Q000097:blood* / Q000378:metabolism
chemical_list: D000900:Anti-Bacterial Agents; D024841:Fluoroquinolones; D000077422:Enrofloxacin