Identification of a field isolate of Fasciola hepatica resistant to albendazole and susceptible to triclabendazole

dc.creatorSanabria, Rodrigo Eduardo Fabrizio
dc.creatorCeballos, Laura
dc.creatorMoreno, Laura
dc.creatorRomero, Jorge
dc.creatorLanusse, Carlos E.
dc.creatorÁlvarez, Luis Ignacio
dc.date2013-05
dc.date2020-06-12T18:06:56Z
dc.date.accessioned2023-07-14T19:59:19Z
dc.date.available2023-07-14T19:59:19Z
dc.identifierhttp://sedici.unlp.edu.ar/handle/10915/98200
dc.identifierhttps://ri.conicet.gov.ar/11336/992
dc.identifierhttp://www.ncbi.nlm.nih.gov/pubmed/23273779
dc.identifierissn:0304-4017
dc.identifier.urihttps://repositorioslatinoamericanos.uchile.cl/handle/2250/7437470
dc.descriptionThe experiments described here were designed to characterize the status of susceptibility/resistance to albendazole (ABZ) and triclabendazole (TCBZ) of a Fasciola hepatica isolate (named CEDIVE isolate) recovered from infected sheep (Gualeguay, Argentina) and maintained under laboratory conditions. Two separate clinical efficacy experiments were performed on sheep artificially infected with the CEDIVE isolate. Experiment 1: Sheep were randomly distributed either in an untreated control group or an ABZ (7.5 mg/kg) treated group (n= 4 each). Additionally, the systemic exposure of ABZ metabolites was assessed in those ABZ-treated infected animals. In Experiment 2, an untreated control group and a TCBZ (10 mg/kg) treated group was included (n = 4 each). The fluckicidal efficacy of ABZ and TCBZ was assessed by comparison of the number of flukes recovered from untreated and treated sheep at 15 days post-treatment. The efficacy against the CEDIVE isolate of F. hepatica was 29% (ABZ) and 100% (TCBZ). The plasma drug exposure (expressed as AUC and Cmax) observed in the ABZ treated animals (Experiment 1), was in agreement with data obtained in previous studies, which indicate that the low ABZ efficacy was not related to the quality of the pharmaceutical product and/or to a low systemic availability of the active drug/metabolite. The results reported here, clearly show that the CEDIVE isolate of F. hepatica behaves as resistant to ABZ and susceptible to TCBZ.
dc.descriptionFacultad de Ciencias Veterinarias
dc.formatapplication/pdf
dc.format105-110
dc.languageen
dc.rightshttp://creativecommons.org/licenses/by-nc-sa/4.0/
dc.rightsCreative Commons Attribution-NonCommercial-ShareAlike 4.0 International (CC BY-NC-SA 4.0)
dc.subjectCiencias Veterinarias
dc.subjectFasciola hepatica isolate
dc.subjectResistance
dc.subjectAlbendazole
dc.subjectTriclabendazole
dc.titleIdentification of a field isolate of Fasciola hepatica resistant to albendazole and susceptible to triclabendazole
dc.typeArticulo
dc.typePreprint


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