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PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
6
pubmed:dateCreated
2004-12-3
pubmed:abstractText
In this study, the susceptibility of two isolates of Fasciola hepatica--the Fairhurst and Oberon isolates--to treatment with triclabendazole was investigated, both in vivo and in vitro. The Fairhurst isolate originated in England, but has since been maintained in Australia; the Oberon isolate originated in Australia. Triclabendazole had a very high efficacy against the Fairhurst isolate. In sheep (dose: 10 mg/kg), the efficacy ranged from 78.4% at 2 weeks post-infection to 98.5% at 6 weeks post-infection. In cattle (dose: 12 mg/kg) efficacy was 89% at 2 weeks post-infection and 100% at 12 weeks. In contrast, against the Oberon isolate, triclabendazole had 0% efficacy against 2-week-old flukes in sheep (dose: 10 mg/kg) and 5% against 4-week-old flukes. Surface changes to flukes of the two isolates were assessed by scanning electron microscopy following treatment in vitro for 24 h in triclabendazole sulphoxide (15 and 50 microg/ml). Disruption took the form of blebbing, swelling and furrowing of the tegument and was greater in the Fairhurst than the Oberon isolate. Surface changes generally were more severe in the anterior than posterior region of the fluke and the dorsal surface was also consistently more severely affected than the ventral surface. Disruption was more severe at the higher drug concentration for both isolates. The morphological data is consistent with the efficacy data, which indicates that the Fairhurst isolate of F. hepatica is susceptible to triclabendazole treatment, whilst the Oberon isolate is refractory.
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:chemical
pubmed:status
MEDLINE
pubmed:month
Dec
pubmed:issn
0932-0113
pubmed:author
pubmed:issnType
Print
pubmed:volume
94
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
427-38
pubmed:meshHeading
pubmed:year
2004
pubmed:articleTitle
Response of two isolates of Fasciola hepatica to treatment with triclabendazole in vivo and in vitro.
pubmed:affiliation
Parasite Proteomics and Therapeutics Research Group, School of Biology and Biochemistry, Medical Biology Centre, The Queen's University of Belfast, 97 Lisburn Road, BT9 7BL, Belfast, Northern Ireland.
pubmed:publicationType
Journal Article