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Markers for benzimidazole resistance in human parasitic nematodes?

Published online by Cambridge University Press:  03 July 2007

ROGER K. PRICHARD
ROGER K. PRICHARD*
Affiliation:
Institute of Parasitology, McGill University, 21111 Lakeshore Road, Ste-Anne-de-Bellevue, Quebec, Canada, H9X 3V9
*
*Corresponding author: Institute of Parasitology, McGill University, 21111 Lakeshore road, Ste-Anne-de-Bellevue, Quebec, Canada, H9X 3V9. Tel: +1-514-398-7729. Fax: +1-514-398-7857. E-mail: roger.prichard@mcgill.ca
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Summary

Benzimidazole (BZ) resistance is widespread and appears to be readily selected in a variety of nematode parasites of animals. There have been reports of a lack of efficacy of BZ anthelmintics against soil transmitted nematode parasites of humans. However, resistance to BZs in nematodes of humans has not been confirmed. It is difficult to perform tests to confirm anthelmintic resistance in humans for a variety of technical and ethical reasons. The use of anthelmintic drugs for the control of helminth parasites in people is increasing massively as a result of numerous programmes to control gastrointestinal nematode parasites in children, the Global Program for the Elimination of Lymphatic Filariasis and other programmes. Many of these programmes are dependent on BZ anthelmintics and this will increase the pressure for resistance development to BZ anthelmintics in nematode parasites of people. We need to perform monitoring for anthelmintic resistance in these programmes and we need new tools to make that monitoring sensitive, inexpensive and practical. There is a real need for DNA-based markers for BZ resistance in nematode parasites of humans. We have a reasonable understanding of the molecular mechanisms and genetics of BZ resistance in some nematode parasites of animals and similar mechanisms are likely to prevail in nematodes of humans. Based on the likelihood that similar single nucleotide polymorphisms (SNPs) will be involved in BZ resistance in human, as in animal nematode parasites, rapid SNP assays have been developed for possible BZ resistance development in Wuchereria bancrofti.

Keywords

Benzimidazole anthelminticsdrug resistancehuman parasitic nematodesalbendazolemebendazoleresistance markers
Type
Research Article
Information
Parasitology , Volume 134 , Special Issue 8: MARKERS FOR ANTHELMINTIC RESISTANCE , August 2007 , pp. 1087 - 1092
Copyright
Copyright © Cambridge University Press 2007

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