Effects of piperonyl butoxide on the toxicity of the organophosphate temephos and the role of esterases in the insecticide resistance of Aedes aegypti

被引：5

作者：

Pereira, Boscolli Barbosa ^{[1
]}

Limongi, Jean Ezequiel ^{[1
]}

de Campos Junior, Edimar Olegario ^{[2
]}

Luiz, Denis Prudencio ^{[2
]}

Kerr, Warwick Estevam ^{[2
]}

机构：

[1] Univ Fed Uberlandia, Dept Saude Ambiental, BR-38400 Uberlandia, MG, Brazil

[2] Univ Fed Uberlandia, Dept Genet & Bioquim, BR-38400 Uberlandia, MG, Brazil

来源：

REVISTA DA SOCIEDADE BRASILEIRA DE MEDICINA TROPICAL | 2014年 / 47卷 / 05期

关键词：

Temephos; Insecticide resistance; Aedes aegypti; Esterases; ARMIGERA HUBNER LEPIDOPTERA; BOOPHILUS-MICROPLUS ACARI; DIAZINON RESISTANCE; DIPTERA; COLEOPTERA; INVOLVEMENT; COUMAPHOS; STRAINS; P450;

D O I：

10.1590/0037-8682-0195-2014

中图分类号：

R38 [医学寄生虫学]; Q [生物科学];

学科分类号：

07 ; 0710 ; 09 ; 100103 ;

摘要：

Introduction: The effects of piperonyl butoxide (PBO) on the toxicity of the organophosphate temephos (TE) and the role of esterases in the resistance of Aedes aegypti to this insecticide were evaluated. Methods: A. aegypti L4 larvae susceptible and resistant to TE were pre-treated with PBO solutions in acetone at concentrations of 0.125, 0.25, 0.5, 1, and 2% for 24h and subsequently exposed to a diagnostic concentration of 0.02mg/L aqueous TE solution. The esterase activity of the larvae extracts pre-treated with varying PBO concentrations and exposed to TE for three time periods was determined. Results: At concentrations of 0.25, 0.5, 1, and 2%, PBO showed a significant synergistic effect with TE toxicity. High levels of esterase activity were associated with the survival of A. aegypti L4 larvae exposed to TE only. Conclusions: The results of the biochemical assays suggest that PBO has a significant inhibitory effect on the total esterase activity in A. aegypti larvae.

引用

页码：579 / 582

页数：4

共 25 条

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