Title
A high oxfendazole dose to control porcine cysticercosis: Pharmacokinetics and tissue residue profiles
Date Issued
01 October 2012
Access level
open access
Resource Type
journal article
Author(s)
Moreno L.
Farias C.
Domingue G.
Donadeu M.
Dungu B.
Lanusse C.
Cysticercosis Working Group
Abstract
Oxfendazole (OFZ) is efficacious for porcine cysticercosis at 30mg/kg. OFZ is not registered to be used at this dose. The assessment of the OFZ and metabolites [(fenbendazole sulphone (FBZSO2), fenbendazole (FBZ)] plasma pharmacokinetic and tissue residue profiles after its oral administration to pigs and the withdrawal period for human consumption were reported. Forty-eight pigs allocated into two groups received OFZ (30mg/kg) orally as a commercial (CF) or as experimental formulation (SMF). Samples (blood, muscle, liver, kidney and fat) were collected over 30days post-treatment and analyzed by HPLC. OFZ was the main compound recovered in plasma, followed by FBZSO2 and low FBZ concentrations. OFZ AUC0-LOQ (209.9±33.9μg·h/ml) and Cmax (5.40±0.65μg/ml) parameters for the CF tended to be higher than those for the SMF (AUC0-LOQ: 159.4±18.3μgh/ml, Cmax: 3.80±0.35μg/ml). The highest total residue (OFZ+FBZSO2+FBZ) concentrations were quantified in liver, followed by kidney, muscle and fat tissue. FBZSO2 residue levels were the highest found in muscle (0.68±0.39μg/g) and fat (0.69±0.39μg/g). In liver and kidney the highest residues corresponded to FBZ (5.29±4.36μg/g) and OFZ (2.86±0.75μg/g), respectively. A withdrawal time of 17days post-treatment was established before tissues are delivered for human consumption. © 2012 Elsevier Ltd.
Start page
3819
End page
3825
Volume
50
Issue
10
Language
English
OCDE Knowledge area
Farmacología, Farmacia
Parasitología
Ciencia veterinaria
Subjects
Scopus EID
2-s2.0-84865457160
PubMed ID
Source
Food and Chemical Toxicology
ISSN of the container
02786915
Sponsor(s)
Funding: This work was funded by the Bill and Melinda Gates Foundation through grants number 1016506 and 23981 and also funds from the Department for International Development (DFID) UK. HG is a Wellcome Trust Senior Research Fellow in Public Health. The funders had no role in study design; data collection, analysis, or interpretation; in writing the report, or in the decision to submit the article for publication.
Sources of information:
Directorio de Producción Científica
Scopus