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Development and application of a simple colorimetric assay reveals widespread distribution of sodium channel mutations in Thai populations of Aedes aegypti

Black IV, William C.; Rajatileka, Shavanthi; Saavedra-Rodriguez, Karla; Trongtokit, Yuwadee; Apiwathnasorn, Chamnarn; McCall, P. J.; Ranson, Hilary

Authors

William C. Black IV

Shavanthi Rajatileka

Karla Saavedra-Rodriguez

Yuwadee Trongtokit

Chamnarn Apiwathnasorn

P. J. McCall

Hilary Ranson



Abstract

Dengue fever and its more serious complications dengue haemorrhagic fever and dengue shock syndrome are growing public health problems in tropical and subtropical countries. In the absence of a vaccine, most dengue control programmes rely heavily on the use of insecticides to target the Aedes mosquito vectors. As a limited number of insecticides are routinely used in control, monitoring for the presence of resistance is an essential component of dengue prevention programmes. The pyrethroid insecticides target the voltage-gated sodium channel on the insects' neurons. Substitutions at residue 1016 of this protein have been associated with pyrethroid and DDT resistance in Aedes aegypti populations from Latin America and Asia. Here we report on the development of a simple colorimetric assay to detect these mutations in individual mosquitoes. Evaluation of this diagnostic assay on 180 Ae. aegypti individuals from Thailand revealed the presence of high frequencies of the Val1016Gly mutation throughout the country. The assay requires no specialised equipment and will enable monitoring for insecticide resistance associated alleles to be routinely incorporated into dengue surveillance operations. © 2008 Elsevier B.V. All rights reserved.

Citation

Black IV, W. C., Rajatileka, S., Saavedra-Rodriguez, K., Trongtokit, Y., Apiwathnasorn, C., McCall, P. J., & Ranson, H. (2008). Development and application of a simple colorimetric assay reveals widespread distribution of sodium channel mutations in Thai populations of Aedes aegypti. Acta Tropica, 108(1), 54-57. https://doi.org/10.1016/j.actatropica.2008.08.004

Journal Article Type Article
Publication Date Oct 1, 2008
Journal Acta Tropica
Print ISSN 0001-706X
Publisher Elsevier
Peer Reviewed Peer Reviewed
Volume 108
Issue 1
Pages 54-57
DOI https://doi.org/10.1016/j.actatropica.2008.08.004
Keywords kdr, insecticide resistance, dengue, aedes aegypti
Public URL https://uwe-repository.worktribe.com/output/1008633
Publisher URL http://dx.doi.org/10.1016/j.actatropica.2008.08.004




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