Atividade anti-helmíntica do lapachol, β-lapachona e derivados contra larvas de Toxocara canis
Autor(a) principal: | |
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Data de Publicação: | 2015 |
Outros Autores: | , , , , , , , , , , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Revista do Instituto de Medicina Tropical de São Paulo |
Texto Completo: | https://www.revistas.usp.br/rimtsp/article/view/101009 |
Resumo: | Anthelmintics used for intestinal helminthiasis treatment are generally effective; however, their effectiveness in tissue parasitosis (i.e. visceral toxocariasis) is moderate. The aim of this study was to evaluate the in vitro activity of lapachol, β-lapachone and phenazines in relation to the viability of Toxocara canis larvae. A concentration of 2 mg/mL (in duplicate) of the compounds was tested using microculture plates containing Toxocara canis larvae in an RPMI-1640 environment, incubated at 37 °C in 5% CO2 tension for 48 hours. In the 2 mg/mL concentration, four phenazines, lapachol and three of its derivatives presented a larvicide/larvistatic activity of 100%. Then, the minimum larvicide/larvistatic concentration (MLC) test was conducted. The compounds that presented the best results were nor-lapachol (MLC, 1 mg/mL), lapachol (MLC 0.5 mg/mL), β-lapachone, and β-C-allyl-lawsone (MLC, 0.25 mg/mL). The larvae exposed to the compounds, at best MLC with 100% in vitro activity larvicide, were inoculated into healthy BALB/c mice and were not capable of causing infection, confirming the larvicide potential in vitro of these compounds. |
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Atividade anti-helmíntica do lapachol, β-lapachona e derivados contra larvas de Toxocara canis ANTHELMINTIC ACTIVITY OF LAPACHOL, β-LAPACHONE AND ITS DERIVATIVES AGAINST Toxocara canis LARVAE Anthelmintics used for intestinal helminthiasis treatment are generally effective; however, their effectiveness in tissue parasitosis (i.e. visceral toxocariasis) is moderate. The aim of this study was to evaluate the in vitro activity of lapachol, β-lapachone and phenazines in relation to the viability of Toxocara canis larvae. A concentration of 2 mg/mL (in duplicate) of the compounds was tested using microculture plates containing Toxocara canis larvae in an RPMI-1640 environment, incubated at 37 °C in 5% CO2 tension for 48 hours. In the 2 mg/mL concentration, four phenazines, lapachol and three of its derivatives presented a larvicide/larvistatic activity of 100%. Then, the minimum larvicide/larvistatic concentration (MLC) test was conducted. The compounds that presented the best results were nor-lapachol (MLC, 1 mg/mL), lapachol (MLC 0.5 mg/mL), β-lapachone, and β-C-allyl-lawsone (MLC, 0.25 mg/mL). The larvae exposed to the compounds, at best MLC with 100% in vitro activity larvicide, were inoculated into healthy BALB/c mice and were not capable of causing infection, confirming the larvicide potential in vitro of these compounds. Os anti-helmínticos empregados no tratamento das helmintoses intestinais, de modo geral, são eficazes, porém nas parasitoses teciduais, como é o caso da toxocaríase visceral, a eficácia é moderada. Este estudo teve como objetivo avaliar in vitro a atividade do lapachol, β-lapachona e fenazinas derivadas da β-lapachona sobre a viabilidade de larvas de Toxocara canis. Os compostos foram testados na concentração de 2 mg/mL (em duplicata) em placas de microcultivo, contendo larvas de T. canis em meio RPMI-1640, sendo incubados, a 37 °C, em tensão de CO2 de 5%, por 48 horas. Na concentração de 2 mg/mL, quatro fenazinas, o lapachol e três derivados, apresentaram atividade larvicida/larvostática de 100%. A seguir, foi realizado o teste de concentração larvicida/larvostártica mínima (CLM). Os compostos que apresentaram os melhores resultados foram o nor-lapachol (CLM, 1 mg/mL), lapachol (CLM, 0,5 mg/mL), a β-lapachona e a β-C-alil-lausona (CLM, 0,25 mg/mL). As larvas expostas aos compostos, na melhor CLM 100% in vitro foram inoculadas em camundongos BALB/c saudáveis não sendo capazes de causar infecção, confirmando o potencial larvicida in vitro desses compostos. Universidade de São Paulo. Instituto de Medicina Tropical de São Paulo2015-06-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionapplication/pdfhttps://www.revistas.usp.br/rimtsp/article/view/101009Revista do Instituto de Medicina Tropical de São Paulo; Vol. 57 No. 3 (2015); 197-204Revista do Instituto de Medicina Tropical de São Paulo; Vol. 57 Núm. 3 (2015); 197-204Revista do Instituto de Medicina Tropical de São Paulo; v. 57 n. 3 (2015); 197-2041678-99460036-4665reponame:Revista do Instituto de Medicina Tropical de São Pauloinstname:Instituto de Medicina Tropical (IMT)instacron:IMTenghttps://www.revistas.usp.br/rimtsp/article/view/101009/99673Copyright (c) 2018 Revista do Instituto de Medicina Tropical de São Pauloinfo:eu-repo/semantics/openAccessMATA-SANTOS, Taís PINTO, Nitza França MATA-SANTOS, Hilton Antônio DE MOURA, Kelly Gallan CARNEIRO, Paula Fernandes CARVALHO, Tatiane dos Santos DEL RIO, Karina Pena PINTO, Maria do Carmo Freire Ribeiro MARTINS, Lourdes Rodrigues FENALTI, Juliana Montelli DA SILVA, Pedro Eduardo Almeida SCAINI, Carlos James 2015-07-28T18:18:25Zoai:revistas.usp.br:article/101009Revistahttp://www.revistas.usp.br/rimtsp/indexPUBhttps://www.revistas.usp.br/rimtsp/oai||revimtsp@usp.br1678-99460036-4665opendoar:2022-12-13T16:52:31.249263Revista do Instituto de Medicina Tropical de São Paulo - Instituto de Medicina Tropical (IMT)true |
dc.title.none.fl_str_mv |
Atividade anti-helmíntica do lapachol, β-lapachona e derivados contra larvas de Toxocara canis ANTHELMINTIC ACTIVITY OF LAPACHOL, β-LAPACHONE AND ITS DERIVATIVES AGAINST Toxocara canis LARVAE |
title |
Atividade anti-helmíntica do lapachol, β-lapachona e derivados contra larvas de Toxocara canis |
spellingShingle |
Atividade anti-helmíntica do lapachol, β-lapachona e derivados contra larvas de Toxocara canis MATA-SANTOS, Taís |
title_short |
Atividade anti-helmíntica do lapachol, β-lapachona e derivados contra larvas de Toxocara canis |
title_full |
Atividade anti-helmíntica do lapachol, β-lapachona e derivados contra larvas de Toxocara canis |
title_fullStr |
Atividade anti-helmíntica do lapachol, β-lapachona e derivados contra larvas de Toxocara canis |
title_full_unstemmed |
Atividade anti-helmíntica do lapachol, β-lapachona e derivados contra larvas de Toxocara canis |
title_sort |
Atividade anti-helmíntica do lapachol, β-lapachona e derivados contra larvas de Toxocara canis |
author |
MATA-SANTOS, Taís |
author_facet |
MATA-SANTOS, Taís PINTO, Nitza França MATA-SANTOS, Hilton Antônio DE MOURA, Kelly Gallan CARNEIRO, Paula Fernandes CARVALHO, Tatiane dos Santos DEL RIO, Karina Pena PINTO, Maria do Carmo Freire Ribeiro MARTINS, Lourdes Rodrigues FENALTI, Juliana Montelli DA SILVA, Pedro Eduardo Almeida SCAINI, Carlos James |
author_role |
author |
author2 |
PINTO, Nitza França MATA-SANTOS, Hilton Antônio DE MOURA, Kelly Gallan CARNEIRO, Paula Fernandes CARVALHO, Tatiane dos Santos DEL RIO, Karina Pena PINTO, Maria do Carmo Freire Ribeiro MARTINS, Lourdes Rodrigues FENALTI, Juliana Montelli DA SILVA, Pedro Eduardo Almeida SCAINI, Carlos James |
author2_role |
author author author author author author author author author author author |
dc.contributor.author.fl_str_mv |
MATA-SANTOS, Taís PINTO, Nitza França MATA-SANTOS, Hilton Antônio DE MOURA, Kelly Gallan CARNEIRO, Paula Fernandes CARVALHO, Tatiane dos Santos DEL RIO, Karina Pena PINTO, Maria do Carmo Freire Ribeiro MARTINS, Lourdes Rodrigues FENALTI, Juliana Montelli DA SILVA, Pedro Eduardo Almeida SCAINI, Carlos James |
description |
Anthelmintics used for intestinal helminthiasis treatment are generally effective; however, their effectiveness in tissue parasitosis (i.e. visceral toxocariasis) is moderate. The aim of this study was to evaluate the in vitro activity of lapachol, β-lapachone and phenazines in relation to the viability of Toxocara canis larvae. A concentration of 2 mg/mL (in duplicate) of the compounds was tested using microculture plates containing Toxocara canis larvae in an RPMI-1640 environment, incubated at 37 °C in 5% CO2 tension for 48 hours. In the 2 mg/mL concentration, four phenazines, lapachol and three of its derivatives presented a larvicide/larvistatic activity of 100%. Then, the minimum larvicide/larvistatic concentration (MLC) test was conducted. The compounds that presented the best results were nor-lapachol (MLC, 1 mg/mL), lapachol (MLC 0.5 mg/mL), β-lapachone, and β-C-allyl-lawsone (MLC, 0.25 mg/mL). The larvae exposed to the compounds, at best MLC with 100% in vitro activity larvicide, were inoculated into healthy BALB/c mice and were not capable of causing infection, confirming the larvicide potential in vitro of these compounds. |
publishDate |
2015 |
dc.date.none.fl_str_mv |
2015-06-01 |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion |
format |
article |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
https://www.revistas.usp.br/rimtsp/article/view/101009 |
url |
https://www.revistas.usp.br/rimtsp/article/view/101009 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
https://www.revistas.usp.br/rimtsp/article/view/101009/99673 |
dc.rights.driver.fl_str_mv |
Copyright (c) 2018 Revista do Instituto de Medicina Tropical de São Paulo info:eu-repo/semantics/openAccess |
rights_invalid_str_mv |
Copyright (c) 2018 Revista do Instituto de Medicina Tropical de São Paulo |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
application/pdf |
dc.publisher.none.fl_str_mv |
Universidade de São Paulo. Instituto de Medicina Tropical de São Paulo |
publisher.none.fl_str_mv |
Universidade de São Paulo. Instituto de Medicina Tropical de São Paulo |
dc.source.none.fl_str_mv |
Revista do Instituto de Medicina Tropical de São Paulo; Vol. 57 No. 3 (2015); 197-204 Revista do Instituto de Medicina Tropical de São Paulo; Vol. 57 Núm. 3 (2015); 197-204 Revista do Instituto de Medicina Tropical de São Paulo; v. 57 n. 3 (2015); 197-204 1678-9946 0036-4665 reponame:Revista do Instituto de Medicina Tropical de São Paulo instname:Instituto de Medicina Tropical (IMT) instacron:IMT |
instname_str |
Instituto de Medicina Tropical (IMT) |
instacron_str |
IMT |
institution |
IMT |
reponame_str |
Revista do Instituto de Medicina Tropical de São Paulo |
collection |
Revista do Instituto de Medicina Tropical de São Paulo |
repository.name.fl_str_mv |
Revista do Instituto de Medicina Tropical de São Paulo - Instituto de Medicina Tropical (IMT) |
repository.mail.fl_str_mv |
||revimtsp@usp.br |
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