ArticleParasites & vectors2018
Development of a rapid field-applicable molecular diagnostic for knockdown resistance (kdr) markers in An. gambiae.
Article in Parasites & vectors, 2018. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 1 paper.
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7 authors.
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Abstract
backgroundThe spread of insecticide resistance (IR) is a major threat to vector control programmes for mosquito-borne diseases. Early detection of IR using diagnostic markers could help inform these programmes, especially in remote locations where gathering reliable bioassay data is challenging. Most current molecular tests for genetic IR markers are only suitable for use in well-equipped laboratory settings. There is an unmet need for field-applicable diagnostics.
methodsA single-cartridge test was designed to detect key IR mutations in the major African vector of malaria, Anopheles gambiae. Developed on the portable, rapid, point-of-care compatible PCR platform - Genedrive® (genedrive® plc), the test comprises two assays which target single nucleotide polymorphisms (SNPs) in the voltage gated sodium channel (VGSC) gene that exert interactive effects on knockdown resistance (kdr): L1014F, L1014S and N1575Y.
resultsDistinct melt peaks were observed for each allele at each locus. Preliminary validation of these assays using a test panel of 70 An. gambiae samples showed complete agreement of our assays with the widely-used TaqMan assays, achieving a sensitivity and specificity of 100%.
conclusionHere we show the development of an insecticide resistance detection assay for use on the Genedrive® platform that has the potential to be the first field-applicable diagnostic for kdr.
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