Ultrastructural changes in the Haemonchus contortus cuticle exposed to Acacia mearnsii extract
Autor(a) principal: | |
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Data de Publicação: | 2015 |
Outros Autores: | , , , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Semina. Ciências Agrárias (Online) |
Texto Completo: | https://ojs.uel.br/revistas/uel/index.php/semagrarias/article/view/20391 |
Resumo: | The parasite Haemonchus contortus is one of the most pathogenic for small ruminants in tropical and subtropical regions worldwide, including Brazil. The objective of this study was to evaluate the structural changes induced in adult H. contortus after in vitro contact with Acacia mearnsii extract (AE), using scanning electron microscopy. Adult nematodes were collected from a naturally infected lamb. In the in vitro assay the parasites were placed in contact with AE (100 mg ml-1), for two hours at 37oC. The nematodes used in the assays (exposed to AE and the negative controls) were analyzed using an electron scanning microscope (quadruplicate per treatment). In all replicates, similar morphological alterations were observed on the entire extension of the cuticle of the specimens that remained in contact with the EA in vitro assays, none significant lesion was observed in the negative control (not exposed to AE). These results indicate the direct action of EA on the cuticle of H. contortus in in vitro trials |
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Semina. Ciências Agrárias (Online) |
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Ultrastructural changes in the Haemonchus contortus cuticle exposed to Acacia mearnsii extractAlterações ultraestruturais da cutícula de Haemonchus contortus expostos ao extrato de Acacia mearnsiiGastrointestinal nematodesScanning electron microscopyStructural changesTannins.Alterações ultraestruturaisMicroscopia eletrônicaNematódeos gastrintestinaisTaninos.The parasite Haemonchus contortus is one of the most pathogenic for small ruminants in tropical and subtropical regions worldwide, including Brazil. The objective of this study was to evaluate the structural changes induced in adult H. contortus after in vitro contact with Acacia mearnsii extract (AE), using scanning electron microscopy. Adult nematodes were collected from a naturally infected lamb. In the in vitro assay the parasites were placed in contact with AE (100 mg ml-1), for two hours at 37oC. The nematodes used in the assays (exposed to AE and the negative controls) were analyzed using an electron scanning microscope (quadruplicate per treatment). In all replicates, similar morphological alterations were observed on the entire extension of the cuticle of the specimens that remained in contact with the EA in vitro assays, none significant lesion was observed in the negative control (not exposed to AE). These results indicate the direct action of EA on the cuticle of H. contortus in in vitro trialsHaemonchus contortus é um dos parasitos mais patogênicos para pequenos ruminantes em regiões tropicais e subtropicais em todo o mundo, inclusive no Brasil. O objetivo do trabalho foi analisar alterações ultraestruturais na cutícula de H. contortus após contato com extrato de Acacia mearnsii. Os parasitos expostos ao extrato de Acacia mearnsii (EA) e os controles negativos foram analisados ao microscópio eletrônico de varredura. No teste in vitro, adultos de H. contortus foram coletados de um ovino naturalmente infectado, e os parasitos foram colocados em contato com o EA (100 mg mL-1), durante duas horas à 37oC. Os nematódeos expostos ao EA apresentaram alterações morfológicas em toda a extensão da cutícula. As alterações morfológicas não foram observadas no controle negativo. Estes resultados indicam a ação direta do EA na cutícula de H. contortus. UEL2015-12-09info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionPesquisa de campoPesquisa de campoapplication/pdfhttps://ojs.uel.br/revistas/uel/index.php/semagrarias/article/view/2039110.5433/1679-0359.2015v36n6p3763Semina: Ciências Agrárias; Vol. 36 No. 6 (2015); 3763-3768Semina: Ciências Agrárias; v. 36 n. 6 (2015); 3763-37681679-03591676-546Xreponame:Semina. Ciências Agrárias (Online)instname:Universidade Estadual de Londrina (UEL)instacron:UELenghttps://ojs.uel.br/revistas/uel/index.php/semagrarias/article/view/20391/17463http://creativecommons.org/licenses/by-nc/4.0info:eu-repo/semantics/openAccessYoshihara, EidiMinho, Alessandro PelegrineTabacow, Victor Bittencourt DutraCardim, Sérgio TosiYamamura, Milton Hissashi2022-12-05T11:46:23Zoai:ojs.pkp.sfu.ca:article/20391Revistahttp://www.uel.br/revistas/uel/index.php/semagrariasPUBhttps://ojs.uel.br/revistas/uel/index.php/semagrarias/oaisemina.agrarias@uel.br1679-03591676-546Xopendoar:2022-12-05T11:46:23Semina. Ciências Agrárias (Online) - Universidade Estadual de Londrina (UEL)false |
dc.title.none.fl_str_mv |
Ultrastructural changes in the Haemonchus contortus cuticle exposed to Acacia mearnsii extract Alterações ultraestruturais da cutícula de Haemonchus contortus expostos ao extrato de Acacia mearnsii |
title |
Ultrastructural changes in the Haemonchus contortus cuticle exposed to Acacia mearnsii extract |
spellingShingle |
Ultrastructural changes in the Haemonchus contortus cuticle exposed to Acacia mearnsii extract Yoshihara, Eidi Gastrointestinal nematodes Scanning electron microscopy Structural changes Tannins. Alterações ultraestruturais Microscopia eletrônica Nematódeos gastrintestinais Taninos. |
title_short |
Ultrastructural changes in the Haemonchus contortus cuticle exposed to Acacia mearnsii extract |
title_full |
Ultrastructural changes in the Haemonchus contortus cuticle exposed to Acacia mearnsii extract |
title_fullStr |
Ultrastructural changes in the Haemonchus contortus cuticle exposed to Acacia mearnsii extract |
title_full_unstemmed |
Ultrastructural changes in the Haemonchus contortus cuticle exposed to Acacia mearnsii extract |
title_sort |
Ultrastructural changes in the Haemonchus contortus cuticle exposed to Acacia mearnsii extract |
author |
Yoshihara, Eidi |
author_facet |
Yoshihara, Eidi Minho, Alessandro Pelegrine Tabacow, Victor Bittencourt Dutra Cardim, Sérgio Tosi Yamamura, Milton Hissashi |
author_role |
author |
author2 |
Minho, Alessandro Pelegrine Tabacow, Victor Bittencourt Dutra Cardim, Sérgio Tosi Yamamura, Milton Hissashi |
author2_role |
author author author author |
dc.contributor.author.fl_str_mv |
Yoshihara, Eidi Minho, Alessandro Pelegrine Tabacow, Victor Bittencourt Dutra Cardim, Sérgio Tosi Yamamura, Milton Hissashi |
dc.subject.por.fl_str_mv |
Gastrointestinal nematodes Scanning electron microscopy Structural changes Tannins. Alterações ultraestruturais Microscopia eletrônica Nematódeos gastrintestinais Taninos. |
topic |
Gastrointestinal nematodes Scanning electron microscopy Structural changes Tannins. Alterações ultraestruturais Microscopia eletrônica Nematódeos gastrintestinais Taninos. |
description |
The parasite Haemonchus contortus is one of the most pathogenic for small ruminants in tropical and subtropical regions worldwide, including Brazil. The objective of this study was to evaluate the structural changes induced in adult H. contortus after in vitro contact with Acacia mearnsii extract (AE), using scanning electron microscopy. Adult nematodes were collected from a naturally infected lamb. In the in vitro assay the parasites were placed in contact with AE (100 mg ml-1), for two hours at 37oC. The nematodes used in the assays (exposed to AE and the negative controls) were analyzed using an electron scanning microscope (quadruplicate per treatment). In all replicates, similar morphological alterations were observed on the entire extension of the cuticle of the specimens that remained in contact with the EA in vitro assays, none significant lesion was observed in the negative control (not exposed to AE). These results indicate the direct action of EA on the cuticle of H. contortus in in vitro trials |
publishDate |
2015 |
dc.date.none.fl_str_mv |
2015-12-09 |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Pesquisa de campo Pesquisa de campo |
format |
article |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
https://ojs.uel.br/revistas/uel/index.php/semagrarias/article/view/20391 10.5433/1679-0359.2015v36n6p3763 |
url |
https://ojs.uel.br/revistas/uel/index.php/semagrarias/article/view/20391 |
identifier_str_mv |
10.5433/1679-0359.2015v36n6p3763 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
https://ojs.uel.br/revistas/uel/index.php/semagrarias/article/view/20391/17463 |
dc.rights.driver.fl_str_mv |
http://creativecommons.org/licenses/by-nc/4.0 info:eu-repo/semantics/openAccess |
rights_invalid_str_mv |
http://creativecommons.org/licenses/by-nc/4.0 |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
application/pdf |
dc.publisher.none.fl_str_mv |
UEL |
publisher.none.fl_str_mv |
UEL |
dc.source.none.fl_str_mv |
Semina: Ciências Agrárias; Vol. 36 No. 6 (2015); 3763-3768 Semina: Ciências Agrárias; v. 36 n. 6 (2015); 3763-3768 1679-0359 1676-546X reponame:Semina. Ciências Agrárias (Online) instname:Universidade Estadual de Londrina (UEL) instacron:UEL |
instname_str |
Universidade Estadual de Londrina (UEL) |
instacron_str |
UEL |
institution |
UEL |
reponame_str |
Semina. Ciências Agrárias (Online) |
collection |
Semina. Ciências Agrárias (Online) |
repository.name.fl_str_mv |
Semina. Ciências Agrárias (Online) - Universidade Estadual de Londrina (UEL) |
repository.mail.fl_str_mv |
semina.agrarias@uel.br |
_version_ |
1799306055928250368 |