Effects of piperonyl butoxide on the toxicity of the organophosphate temephos and the role of esterases in the insecticide resistance of Aedes aegypti
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...
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ftdoajarticles:oai:doaj.org/article:10106f53215043ab9cce30c488e83a6a 2023-05-15T15:05:01+02:00 Effects of piperonyl butoxide on the toxicity of the organophosphate temephos and the role of esterases in the insecticide resistance of Aedes aegypti Boscolli Barbosa Pereira Jean Ezequiel Limongi Edimar Olegário de Campos Júnior Denis Prudencio Luiz Warwick Estevam Kerr 2014-10-01T00:00:00Z https://doi.org/10.1590/0037-8682-0195-2014 https://doaj.org/article/10106f53215043ab9cce30c488e83a6a EN eng Sociedade Brasileira de Medicina Tropical (SBMT) http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0037-86822014000500579&lng=en&tlng=en https://doaj.org/toc/1678-9849 1678-9849 doi:10.1590/0037-8682-0195-2014 https://doaj.org/article/10106f53215043ab9cce30c488e83a6a Revista da Sociedade Brasileira de Medicina Tropical, Vol 47, Iss 5, Pp 579-582 (2014) Temephos Insecticide resistance Aedes aegypti Esterases Arctic medicine. Tropical medicine RC955-962 article 2014 ftdoajarticles https://doi.org/10.1590/0037-8682-0195-2014 2022-12-30T21:26:05Z 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. Article in Journal/Newspaper Arctic Directory of Open Access Journals: DOAJ Articles Arctic Revista da Sociedade Brasileira de Medicina Tropical 47 5 579 582 |
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English |
topic |
Temephos Insecticide resistance Aedes aegypti Esterases Arctic medicine. Tropical medicine RC955-962 |
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Temephos Insecticide resistance Aedes aegypti Esterases Arctic medicine. Tropical medicine RC955-962 Boscolli Barbosa Pereira Jean Ezequiel Limongi Edimar Olegário de Campos Júnior Denis Prudencio Luiz Warwick Estevam Kerr Effects of piperonyl butoxide on the toxicity of the organophosphate temephos and the role of esterases in the insecticide resistance of Aedes aegypti |
topic_facet |
Temephos Insecticide resistance Aedes aegypti Esterases Arctic medicine. Tropical medicine RC955-962 |
description |
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. |
format |
Article in Journal/Newspaper |
author |
Boscolli Barbosa Pereira Jean Ezequiel Limongi Edimar Olegário de Campos Júnior Denis Prudencio Luiz Warwick Estevam Kerr |
author_facet |
Boscolli Barbosa Pereira Jean Ezequiel Limongi Edimar Olegário de Campos Júnior Denis Prudencio Luiz Warwick Estevam Kerr |
author_sort |
Boscolli Barbosa Pereira |
title |
Effects of piperonyl butoxide on the toxicity of the organophosphate temephos and the role of esterases in the insecticide resistance of Aedes aegypti |
title_short |
Effects of piperonyl butoxide on the toxicity of the organophosphate temephos and the role of esterases in the insecticide resistance of Aedes aegypti |
title_full |
Effects of piperonyl butoxide on the toxicity of the organophosphate temephos and the role of esterases in the insecticide resistance of Aedes aegypti |
title_fullStr |
Effects of piperonyl butoxide on the toxicity of the organophosphate temephos and the role of esterases in the insecticide resistance of Aedes aegypti |
title_full_unstemmed |
Effects of piperonyl butoxide on the toxicity of the organophosphate temephos and the role of esterases in the insecticide resistance of Aedes aegypti |
title_sort |
effects of piperonyl butoxide on the toxicity of the organophosphate temephos and the role of esterases in the insecticide resistance of aedes aegypti |
publisher |
Sociedade Brasileira de Medicina Tropical (SBMT) |
publishDate |
2014 |
url |
https://doi.org/10.1590/0037-8682-0195-2014 https://doaj.org/article/10106f53215043ab9cce30c488e83a6a |
geographic |
Arctic |
geographic_facet |
Arctic |
genre |
Arctic |
genre_facet |
Arctic |
op_source |
Revista da Sociedade Brasileira de Medicina Tropical, Vol 47, Iss 5, Pp 579-582 (2014) |
op_relation |
http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0037-86822014000500579&lng=en&tlng=en https://doaj.org/toc/1678-9849 1678-9849 doi:10.1590/0037-8682-0195-2014 https://doaj.org/article/10106f53215043ab9cce30c488e83a6a |
op_doi |
https://doi.org/10.1590/0037-8682-0195-2014 |
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Revista da Sociedade Brasileira de Medicina Tropical |
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47 |
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