alexa Increased expression of ABC transport proteins is associated with ivermectin resistance in the model nematode Caenorhabditis elegans.
Agri and Aquaculture

Agri and Aquaculture

Journal of Aquaculture Research & Development

Author(s): James CE, Davey MW

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Abstract Widespread resistance to chemotherapeutic agents is one of the biggest challenges facing human health and the agricultural industry, with resistance to all current anthelmintics now recorded and few new agents or vaccines available. Understanding the development of drug resistance in parasitic nematodes is critical to prolonging the efficacy of current anthelmintics, developing markers for monitoring drug resistance and is beneficial in the design of new chemotherapeutic agents or targets. This study describes the development of ivermectin-resistant strains of the model nematode Caenorhabditis elegans through step-wise exposure to increasing doses of ivermectin commencing with a non-toxic dose of 1 ng/ml. Resistant strains were developed that displayed a multidrug resistance phenotype with cross-resistance to the related drug moxidectin and to other anthelmintics, levamisole and pyrantel, but not albendazole. Resistance was associated with increased expression of the multidrug resistance proteins (MRPs) and P-glycoproteins. Resistance to ivermectin was reversible by the co-administration of MRP, P-glycoprotein and glutathione biosynthesis inhibitors, confirming the involvement of these proteins in resistance. In our model, resistance to low levels of ivermectin (
  • DOI: 10.1016/j.ijpara.2008.06.009
  • This article was published in Int J Parasitol and referenced in Journal of Aquaculture Research & Development

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