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Publisher: Public Library of Science
Journal: PLoS ONE
Languages: English
Types: Article
Subjects: Ethers, Research Article, Population Metrics, Infectious Diseases, Geographical Locations, Genetic Loci, Chemical Compounds, Agriculture, Epidemiology, Genetics, Java, Physical Sciences, Neglected Tropical Diseases, Agrochemicals, People and Places, Demography, Organic Chemistry, Oceania, Animals, Insecticides, Alleles, Disease Vectors, Mosquitoes, Chemistry, Biology and Life Sciences, Insect Vectors, Asia, Arthropoda, Medicine, Organophosphates, Tropical Diseases, Insects, Indonesia, Viral Diseases, Q, R, Population Biology, Dengue Fever, Science, Organisms, Death Rates, Medicine and Health Sciences, Organic Compounds, Invertebrates

Classified by OpenAIRE into

mesheuropmc: parasitic diseases
The emergence of insecticide resistant Aedes aegypti mosquitoes has hampered dengue control efforts. WHO susceptibility tests, using several pyrethroid compounds, were conducted on Ae. aegypti larvae that were collected and raised to adulthood from Semarang, Surakarta, Kudus and Jepara in Java. The AaNa V gene fragment encompassing kdr polymorphic sites from both susceptible and resistant mosquitoes was amplified, and polymorphisms were associated with the resistant phenotype. The insecticide susceptibility tests demonstrated Ae, aegypti resistance to the pyrethroids, with mortality rates ranging from 1.6%?15.2%. Three non-synonymous polymorphisms (S989P, V1016G and F1534C) and one synonymous polymorphism (codon 982) were detected in the AaNa V gene. Eight AaNa V alleles were observed in specimens from Central Java. Allele 3 (SGF) and allele 7 (PGF) represent the most common alleles found and demonstrated strong associations with resistance to pyrethroids (OR = 2.75, CI: 0.97?7.8 and OR = 7.37, CI: 2.4?22.5, respectively). This is the first report of 8 Ae. aegypti AaNa V alleles, and it indicates the development of resistance in Ae. aegypti in response to pyrethroid insecticide-based selective pressure. These findings strongly suggest the need for an appropriate integrated use of insecticides in the region. The 989P, 1016G and 1534C polymorphisms in the AaNa V gene are potentially valuable molecular markers for pyrethroid insecticide resistance monitoring.

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