RT info:eu-repo/semantics/article T1 Pharmacokinetics of doxycycline in sheep after intravenous and oral administration A1 Castro, Luis J. A1 Sahagún , Ana M. A1 Diez Liébana, María José A1 Fernández, Nélida A1 Sierra Vega, Matilde A1 García, Juan J. A2 Farmacologia K1 Farmacología K1 Veterinaria K1 Zoología K1 Pharmacokinetics K1 Dosycycline K1 Sheep K1 Intravenous K1 Oral AB The pharmacokinetics of doxycycline were investigated in sheep after oral (PO) and intravenous (IV) administration. The IV data werebest described using a 2- (n = 5) or 3- (n = 6) compartmental open model. Mean pharmacokinetic parameters obtained using a 2-compartmentalmodel included a volume of distribution at steady-state (Vss) of 1.759 ± 0.3149 L/kg, a total clearance (Cl) of 3.045 ± 0.5264 mL/kg/min and an elimination half-life (t1/2b) of 7.027 ± 1.128 h. Comparative values obtained from the 3-compartmental mean values were:Vss of 1.801 ± 0.3429 L/kg, a Cl of 2.634 ± 0.6376 mL/kg/min and a t1/2b of 12.11 ± 2.060 h. Mean residence time (MRT0_1) was11.18 ± 3.152 h. After PO administration, the data were best described by a 2-compartment open model. The pharmacokinetic parametermean values were: maximum plasma concentration (Cmax), 2.130 ± 0.950 lg/mL; time to reach Cmax (tmax), 3.595 ± 3.348 h, and absorptionhalf-life (t1=2k01 ), 36.28 ± 14.57 h. Non-compartmental parameter values were: Cmax, 2.182 ± 0.9117 lg/mL; tmax, 3.432 ± 3.307 h;F, 35.77 ± 10.20%, and mean absorption time (MAT0–∞), 25.55 ± 15.27 h. These results suggest that PO administration of doxycyclinecould be useful as an antimicrobial drug in sheep. PB Elsevier YR 2015 FD 2015-09-04 LK http://hdl.handle.net/10612/4571 UL http://hdl.handle.net/10612/4571 NO The Veterinary Journal, 2009, n. 180 NO P. 389-395 DS BULERIA. Repositorio Institucional de la Universidad de León RD 26-abr-2024