Pharmacokinetic Behavior Of Meloxicam In Loggerhead (Caretta Caretta), Kemp'S Ridley (Lepidochelys Kempii), And Green (Chelonia Mydas) Sea Turtles After Subcutaneous Administration
JOURNAL OF ZOO AND WILDLIFE MEDICINE(2021)
摘要
The objective of this study was to determine the pharmacokinetics of a single dose of meloxicam administered subcutaneously (SQ) to three species of sea turtles: loggerheads (Caretta caretta), Kemp's ridley (Lepidochelys kempii), and greens (Chelonia mydas). A dose of 1 mg/kg was given to the Kemp's ridleys and greens, whereas the loggerheads received 2 mg/kg. After SQ administration, the half-life (t(1/2)) of meloxicam administered at 1 mg/kg in the Kemp's ridleys was 5.51 hr but could not be determined in the greens. The half-life of meloxicam administered at 2 mg/kg in the loggerheads was 2.99 hr. The maximum concentration (C-max) for meloxicam after SQ administration at 1 mg/kg in the Kemp's ridleys was 6.76 mu g/ml and in the greens was 9.35 mu g/ml. The C-max in loggerheads for meloxicam after SQ administration at 2 mg/kg was 3.63 mu g/mL. Meloxicam administered SQ at a dose of 1 mg/kg to the Kemp's ridley and greens provided measurable plasma concentrations of meloxicam for 48 and 120 hr, respectively, with no adverse side effects. In loggerheads, meloxicam administered SQ at a dose of 2 mg/kg provided measurable plasma levels of meloxicam for only 24 hr. Plasma levels of meloxicam of greater than 0.5 mu g/ml are considered to be therapeutic in humans. Results suggested that administration of meloxicam SQ at 1 mg/kg in Kemp's ridleys and greens would result in plasma concentrations greater than 0.5 mu g/ml for 12 and 120 hr, respectively. The administration of 2 mg/kg meloxicam to loggerhead turtles resulted in plasma concentrations greater than 0.5 mu g/ml for only 4 hr.
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