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• W2894035900 abstract "Cytochrome P450 monooxygenases (P450s) play important roles in metabolizing various insecticides and often contribute to the development of insecticide resistance in insects and other arthropod species. The objective of this study was to compare the metabolism of four commonly used pyrethroids including deltamethrin, fluvalinate, fenvalerate, and permethrin in the midgut tissue of Locusta migratoria Linnaeus (Orthoptera: Acrididae) by using synergism bioassay and ultra-performance liquid chromatography (UPLC)-mass spectrometer (MS) analyses. Our study showed that piperonyl butoxide (PBO, P450 enzyme inhibitor) can significantly synergize the toxicity of deltamethrin, fluvalinate, and fenvalerate with synergism ratios ranging from 1.30 to 1.70 folds. Preincubations of the midgut tissue with PBO followed by incubations with each of the four pyrethroids resulted in significantly higher amounts of unmetabolized deltamethrin and fluvalinate than those in the control (preincubation without PBO) as well as preincubations with other two detoxification enzyme inhibitors. These results indicate that P450s play important roles in metabolizing deltamethrin and fluvalinate in the midgut tissue. Our further study using deltamethrin as a representative pyrethroid and UPLC-MS techniques confirmed that the reduced amount of deltamethrin in the control (preincubation without PBO) was due to the metabolism of deltamethrin to yield hydroxydeltamethrin which is a major metabolite produced by P450-mediated aromatic hydroxylation of deltamethrim. These results provide new insights into differential metabolic activity of P450s towards different pyrethroids in the midgut tissue of L. migratoria." @default.
• W2894035900 created "2018-10-05" @default.
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• W2894035900 date "2018-09-25" @default.
• W2894035900 modified "2023-10-16" @default.
• W2894035900 title "Metabolic Activity of Cytochrome P450s Towards Four Pyrethroids in Midgut Tissue From Locusta migratoria (Orthoptera: Acrididae)" @default.
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• W2894035900 doi "https://doi.org/10.1093/jee/toy299" @default.
• W2894035900 hasPubMedId "https://pubmed.ncbi.nlm.nih.gov/30256952" @default.
• W2894035900 hasPublicationYear "2018" @default.
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