نتایج جستجو برای: pyrethroid insecticides
تعداد نتایج: 15273 فیلتر نتایج به سال:
BACKGROUND Mosquitoes have developed resistance against pyrethroids, the only class of insecticides approved for use on long-lasting insecticidal nets (LLINs). The present study sought to evaluate the efficacy of the pyrethroid synergist PermaNet® 3.0 LLIN versus the pyrethroid-only PermaNet® 2.0 LLIN, in an East African hut design in Lower Moshi, northern Tanzania. In this setting, resistance ...
Latest pesticide monitoring results suggests that there is a shift in residential pesticide exposure from organophosphorous insecticides to pyrethroid insecticides. Although it is well known that pyrethroid insecticides are potential neurodevelopmental toxicants, research pertaining to their effect, especially permethrin, has not been carried out in mice. In the present study we report the effe...
Pyrethroid insecticides are used to control diseases spread by arthropods. We have developed a suite of pyrethroid mimetic activity-based probes (PyABPs) to selectively label and identify P450s associated with pyrethroid metabolism. The probes were screened against pyrethroid-metabolizing and nonmetabolizing mosquito P450s, as well as rodent microsomes, to measure labeling specificity, plus cyt...
Voltage-gated sodium channels are the primary target of pyrethroid insecticides. Although it is well known that specific mutations in insect sodium channels confer knockdown resistance (kdr) to pyrethroids, the atomic mechanisms of pyrethroid-sodium channel interactions are not clearly understood. Previously, computer modeling and mutational analysis predicted two pyrethroid receptors, pyrethro...
George Mtove, Joseph P. Mugasa, Louisa A. Messenger, Robert C. Malima, Peter Mangesho, Franklin Magogo, Mateusz Plucinski, Ramadhan Hashimu, Johnson Matowo, Donald Shepard, Bernard Batengana, Jackie Cook, Basiliana Emidi, Yara Halasa, Robert Kaaya, Aggrey Kihombo, Kimberly A. Lindblade, Geofrey Makenga, Robert Mpangala, Abraham Mwambuli, Ruth Mzava, Abubakary Mziray, George Olang, Richard M. Ox...
The natural pyrethrins from the daisy-like flower, Tanacetum or Chrysanthemum cinerariifolium, are nonpersistent insecticides of low toxicity to mammals. Synthetic analogs or pyrethroids, evolved from the natural compounds by successive isosteric modifications, are more potent and stable and are the newest important class of crop protection chemicals. They retain many of the favorable propertie...
Selection of a laboratory colony of the brown planthopper Nilaparvata lugens with the pyrethroids permethrin and lambda-cyhalothrin increased its resistance to both insecticides. Biochemical analysis and synergistic studies with metabolic inhibitors indicated that elevated glutathione S-transferases (GSTs) with a predominant peroxidase activity conferred resistance to both pyrethroids, whereas ...
BACKGROUND Multiple applications of pyrethroid insecticides are used to manage European corn borer, Ostrinia nubilalis Hübner, in snap bean, but new diamide insecticides may reduce application frequency. In a 2 year small-plot study, O. nubilalis control was evaluated by applying cyantraniliprole (diamide) and bifenthrin (pyrethroid) insecticides at one of three phenological stages (bud, bloom ...
Objectives To evaluate the entomological efficacy and residual activity of indoor spraying with Fludora® Fusion 562.5 WP-SB, a combination formulation containing clothianidin, neonicotinoid deltamethrin, pyrethroid, against main rural malaria vector, Anopheles culicifacies s.l., in India small-scale trial. Methods In three study villages, suitable households were randomly allocated to five trea...
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