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Pharmacokinetics of Florfenicol in Healthy Pigs and in Pigs Experimentally Infected with Actinobacillus pleuropneumoniae
Liu, JJ and Fung, KF and Chen, Z and Zeng, Z and Zhang, J, Pharmacokinetics of Florfenicol in Healthy Pigs and in Pigs Experimentally Infected with Actinobacillus pleuropneumoniae, Antimicrobial Agents and Chemotherapy, (February) pp. 820-823. ISSN 0066-4804 (2003) [Refereed Article]
Copyright 2003 American Society for Microbiology
Official URL: http://aac.asm.org/content/47/2/820.full?sid=e424d...
A comparative in vivo pharmacokinetic study of florfenicol was conducted in 18 crossbred pigs infected with Actinobacillus pleuropneumoniae following intravenous (i.v.), intramuscular (i.m.), or oral (p.o.) administration of a single dose of 20 mg/kg. The disease model was confirmed by clinical signs, X rays, pathohistologic examinations, and organism isolation. Florfenicol concentrations in plasma were determined by a validated high-performance liquid chromatography method with UV detection at a wavelength of 223 nm. Pharmacokinetic parameters were calculated by using the MCPKP software (Research Institute of Traditional Chinese Veterinary Medicine, Lanzhou, China). The disposition of florfenicol after a single i.v. bolus was described by a two-compartment model with values for the half-life at a phase (t1/2a), the half-life at a phase (t1/2a), the area under the concentration-time curve (AUC 0-), and the volume of distribution at steady state (Vss) of 0.37 h, 2.91 h, 64.86 ug h/ml, and 1.2 liter/kg, respectively. The concentration-time data fitted the one-compartment (after i.m.) and two-compartment (after p.o.) models with first-order absorption. The values for the maximum concentration of drug in serum (Cmax), t1/2a, t1/2a, and bioavailability after i.m. and p.o. dosing were 4.00 and 8.11 ug/ml, 0.12 and 3.91 h, 13.88 and 16.53 h, and 122.7 and 112.9%, respectively, for the two models. The study showed that florfenicol was absorbed quickly and completely, distributed widely, and eliminated slowly in the infected pigs, and there was no statistically significant difference between the pharmacokinetic profiles for the infected and healthy pigs.
|Item Type:||Refereed Article|
|Keywords:||Pharmacokinetics; florfenicol; pig; pneumonia|
|Research Division:||Agricultural, Veterinary and Food Sciences|
|Research Group:||Veterinary sciences|
|Research Field:||Veterinary pharmacology|
|Objective Division:||Animal Production and Animal Primary Products|
|Objective Group:||Livestock raising|
|UTAS Author:||Liu, JJ (Dr Johnson Liu)|
|Downloads:||311 View Download Statistics|
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