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Tissue pharmacokinetics of florfenicol in pigs experimentally infected with Actinobacillus pleuropneumoniae
journal contribution
posted on 2023-05-17, 22:34 authored by Johnson Liu, Fung, KF, Chen, ZL, Zeng, ZL, Zhang, JThe aim of this study has been to determine the tissue pharmacokinetic parameters of florfenicol in the pigs experimentally infected with Actinobacillus pleuropneumoniae. 21 crossed-bred (Duroc x Landrace x Yorkshire) local species of pigs were infected experimentally with Actinobacillus pleuropneumoniae serotype 1 and confirmed as typical sub-acute pleuropneumonia. A single dose of 20mg/kg body weight of florfenicol, a novel animal-using antibiotic, was administrated intramuscularly in the pigs and then samples of blood, lung, trachea with bronchi, liver, kidney and muscle were taken at scheduled time points. Drug concentrations were determined by high performance liquid chromatography (HPLC) with an ultraviolet detector via extraction with ethyl acetate under nitrogen flow. The statistic moment theory (SMT) mathematic package was applied to calculate the tissue pharmacokinetic parameters of florfenicol in the infected model. AUC of lung, trachea with bronchi, liver, kidney and muscle were 121.69, 79.37, 81.05, 181.2, and 94.07 mg/l·h, respectively, MRT were from 34.66 to 90.17 h, and t 1/2β from 24.75 to 69.34 h, respectively. Conclusions: Florfenicol was widely distributed in these tissues and maintained the effective therapeutic concentrations especially in the respiratory tract tissues that are the target organs of Actinobacillus pneuropneumoniae. Clinical significance: Tissue pharmacokinetic data could be evidence for regime designing of florfenicol in treatment of porcine pleuropneumonia.
History
Publication title
European Journal of Drug Metabolism and PharmacokineticsVolume
27Issue
4Pagination
265-271ISSN
0378-7966Department/School
School of Pharmacy and PharmacologyPublisher
Medecine Et HygienePlace of publication
78, Ave De La Roseraie, Case Postale 456,, Geneva 4, Switzerland, Ch-1211Rights statement
Copyright 2002 Springer-VerlagRepository Status
- Restricted