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| 4. |  | GOTTARDO, L. C. B.; FREITAS, E. P. T.; ARAÚJO, A. L. de; RAPHAEL, J. P. A.; GOMES, G. P.; CHIAVEGATO, E. J.; ALMEIDA, R. E. M. de. Interferência do ambiente na desfolha do algodoeiro. In: CONGRESSO BRASILEIRO DO ALGODÃO, 7., 2009, Foz do Iguaçu. Sustentabilidade da cotonicultura brasileira e expansão dos mercados: anais. Campina Grande: Embrapa Algodão, 2009. 1 CD-ROM| Biblioteca(s): Embrapa Algodão. |
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| 5. | | FONTENELE, J. A.; FREITAS, E. P. de; SANTOS, J. M. L. dos; BEZERRA, A. C. D. S.; BEVILAQUA, C. M. L.; VIEIRA, L. da S.; MONTEIRO, J. P. Extração de DNA de Haemonchus contortus. In: SIMPÓSIO LATINO-AMERICANO DE BIOTECNOLOGIA DO NORDESTE, 1., 2013, Parnaíba. [Resumos...]. Parnaíba: UFPI; BIOTEC; CONICET, 2013. Poster.| Biblioteca(s): Embrapa Caprinos e Ovinos. |
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| 6. | | FERREIRA, A. D. da S.; SANTOS, J. M. L. dos; FREITAS, E. P.; VIEIRA, L. da S.; BEVILÁQUA, C. M. L.; MONTEIRO, J. P. Extração de DNA de machos e fêmeas adultos de Haemonchus contortus. In: ENCONTRO DE INICIAÇÃO CIENTÍFICA DA EMBRAPA CAPRINOS E OVINOS, 4., 2015, Sobral. Anais... Sobral: Embrapa Caprinos e Ovinos, 2015. p. 41-42.| Biblioteca(s): Embrapa Caprinos e Ovinos. |
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| 7. | | MONTEIRO, J. P.; SILVA, F. R. da; FREITAS, E. P. de; FONTENELE, J. A.; SANTOS, J. M. L. dos; TEIXEIRA, M.; VIEIRA, L. da S. Transcriptome analysis of Haemonchus contortus infecting goats from breeds with differing resistance levels. In: INTERNATIONAL CONFERENCE OF THE WORLD ASSOCIATION FOR THE ADVANCEMENT OF VETERINARY PARASITOLOGY, 27., 2019, Madison. Abstract book. Madison: WAAVP, 2019. p. 266. Abstract PS02.63.| Biblioteca(s): Embrapa Agricultura Digital; Embrapa Caprinos e Ovinos. |
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| 8. | | SANTOS, J. M. L. dos; VASCONCELOS, J. F.; FROTA, G. A.; FREITAS, E. P. de; TEIXEIRA, M.; VIEIRA, L. da S.; BEVILAQUA, C. M. L.; MONTEIRO, J. P. Quantitative molecular diagnosis of levamisole resistance in populations of Haemonchus contortus. Experimental Parasitology, v. 205, article 107734, Aug. 2019.| Biblioteca(s): Embrapa Caprinos e Ovinos. |
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| 9. | | SANTOS, J. M. L. dos; FREITAS, E. P. de; ARAÚJO FILHO, J. V. de; MONTEIRO, P. R.; RIBEIRO, W. L. C.; ANDRE, W. P. P.; VIEIRA, L. da S.; MONTEIRO, J. P.; BEVILAQUA, C. M. L. Frequência de polimorfismos responsáveis pela resistência a benzimidazóis em populações de Haemonchus contortus do Ceará. In: SIMPÓSIO INTERNACIONAL DE RAÇAS NATIVAS: SUSTENTABILIDADE E PROPRIEDADE INTELECTUAL, 1., 2015, Teresina. Anais... Teresina: SFA-PI: ABCPD, 2015. p. 649. Ref.: P-378.| Biblioteca(s): Embrapa Caprinos e Ovinos. |
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| 10. | | MONTEIRO, J. P.; SANTOS, J. M. L. dos; ANDRÉ, W. P. P.; VASCONCELOS, J. F.; FROTA, G. A.; RIBEIRO, W. L. C.; FREITAS, E. P. de; MACEDO, I. T. F.; TEIXEIRA, M.; VIEIRA, L. da S.; BEVILAQUA, C. M. L. Molecular diagnostic for levamisol resistance in Haemonchus contortus. In: INTERNATIONAL CONFERENCE OF THE WORLD ASSOCIATION FOR THE ADVANCEMENT OF VETERINARY PARASITOLOGY, 26., 2017, Kuala Lumpur, Malaysia. Abstract book. Perth: WAAVP, 2017. p. 381. Abstract 4592. In conjunction with 53rd MSPTM Annual Conference.| Biblioteca(s): Embrapa Caprinos e Ovinos. |
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 | Acesso ao texto completo restrito à biblioteca da Embrapa Caprinos e Ovinos. Para informações adicionais entre em contato com cnpc.biblioteca@embrapa.br. |
Registro Completo
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Biblioteca(s): |
Embrapa Caprinos e Ovinos. |
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Data corrente: |
09/12/2019 |
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Data da última atualização: |
09/12/2019 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Circulação/Nível: |
A - 2 |
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Autoria: |
SANTOS, J. M. L. dos; VASCONCELOS, J. F.; FROTA, G. A.; FREITAS, E. P. de; TEIXEIRA, M.; VIEIRA, L. da S.; BEVILAQUA, C. M. L.; MONTEIRO, J. P. |
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Afiliação: |
JESSICA MARIA LEITE DOS SANTOS, Pós-graduação - INTA / UNINTA - Sobral, CE, Brazil; JANAÉLIA FERREIRA VASCONCELOS, Pós-graduação - INTA / UNINTA - Sobral, CE, Brazil; GRACIELLE ARAÚJO FROTA, Pós-graduação - INTA / UNINTA - Sobral, CE, Brazil; EDILSON PEREIRA DE FREITAS, Pós-graduação - INTA / UNINTA - Sobral, CE, Brazil; MARCEL TEIXEIRA, CNPC; LUIZ DA SILVA VIEIRA, CNPC; CLAUDIA MARIA LEAL BEVILAQUA, Pós-graduação - Universidade Estadual Vale do Acaraú (UVA) - Sobral, CE, Brazil; JOMAR PATRICIO MONTEIRO, CNPC. |
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Título: |
Quantitative molecular diagnosis of levamisole resistance in populations of Haemonchus contortus. |
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Ano de publicação: |
2019 |
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Fonte/Imprenta: |
Experimental Parasitology, v. 205, article 107734, Aug. 2019. |
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DOI: |
http://dx.doi.org/10.1016/j.exppara.2019.107734 |
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Idioma: |
Inglês |
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Conteúdo: |
Abstract: Parasitism by Haemonchus contortus is one of the main limiting factors in small ruminant production around the globe. Although several studies suggest the use of integrated management practices, these parasites have been controlled essentially with synthetic anthelmintic drugs. The resistance mechanism against the imidazothiazole derivative levamisole in Haemonchus contortus has not been fully described. Recently, resistance was associated with a 63bp deletion in the Hco-acr-8b gene that encodes a subunit for a nicotinic acetylcholine receptor. This study aimed to standardize a real time PCR (qPCR) protocol for levamisole resistance diagnosis in H. contortus populations based on this polymorphism and use it to characterize 23 field H. contortus populations obtained from different localities of Ceará State, Northeast Brazil. In addition, two populations of H. contortus were used as a standard of susceptibility and resistance, Inbred Strain Edinburgh (ISE) and Kokstad, respectively. Larval development tests (LDT) were performed on five field isolates and both EC50 and EC95 were estimated. LDT EC95 values provided a wider interval between susceptible and resistant populations than EC50 values (EC95?=?1.96-57.93??M; EC50?=?0.05-0.39??M), and were found to be more appropriate for differentiating them. Real time PCR results showed resistance allele frequencies ranged from 20.9 to 76.7%. Our results suggest that levamisole resistance may be present in field populations but it is not as widespread as benzimidazole resistance. This methodology may be useful to monitor levamisole resistance in field populations of H. contortus. MenosAbstract: Parasitism by Haemonchus contortus is one of the main limiting factors in small ruminant production around the globe. Although several studies suggest the use of integrated management practices, these parasites have been controlled essentially with synthetic anthelmintic drugs. The resistance mechanism against the imidazothiazole derivative levamisole in Haemonchus contortus has not been fully described. Recently, resistance was associated with a 63bp deletion in the Hco-acr-8b gene that encodes a subunit for a nicotinic acetylcholine receptor. This study aimed to standardize a real time PCR (qPCR) protocol for levamisole resistance diagnosis in H. contortus populations based on this polymorphism and use it to characterize 23 field H. contortus populations obtained from different localities of Ceará State, Northeast Brazil. In addition, two populations of H. contortus were used as a standard of susceptibility and resistance, Inbred Strain Edinburgh (ISE) and Kokstad, respectively. Larval development tests (LDT) were performed on five field isolates and both EC50 and EC95 were estimated. LDT EC95 values provided a wider interval between susceptible and resistant populations than EC50 values (EC95?=?1.96-57.93??M; EC50?=?0.05-0.39??M), and were found to be more appropriate for differentiating them. Real time PCR results showed resistance allele frequencies ranged from 20.9 to 76.7%. Our results suggest that levamisole resistance may be present in field populations bu... Mostrar Tudo |
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Palavras-Chave: |
Anthelmintic resistance; Antinematodal Agents; Drug effects; Haemonchiasis; Nematode parasite; Real-time PCR. |
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Thesaurus NAL: |
Benzimidazoles; Drug resistance; Gene frequency; Genetics; Helminths; Levamisole; Nematode larvae; Parasitology; Pharmacology; Sequence alignment; Sheep diseases; Tetramisole. |
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Categoria do assunto: |
L Ciência Animal e Produtos de Origem Animal |
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Marc: |
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024 7 $ahttp://dx.doi.org/10.1016/j.exppara.2019.107734$2DOI
100 1 $aSANTOS, J. M. L. dos
245 $aQuantitative molecular diagnosis of levamisole resistance in populations of Haemonchus contortus.$h[electronic resource]
260 $c2019
520 $aAbstract: Parasitism by Haemonchus contortus is one of the main limiting factors in small ruminant production around the globe. Although several studies suggest the use of integrated management practices, these parasites have been controlled essentially with synthetic anthelmintic drugs. The resistance mechanism against the imidazothiazole derivative levamisole in Haemonchus contortus has not been fully described. Recently, resistance was associated with a 63bp deletion in the Hco-acr-8b gene that encodes a subunit for a nicotinic acetylcholine receptor. This study aimed to standardize a real time PCR (qPCR) protocol for levamisole resistance diagnosis in H. contortus populations based on this polymorphism and use it to characterize 23 field H. contortus populations obtained from different localities of Ceará State, Northeast Brazil. In addition, two populations of H. contortus were used as a standard of susceptibility and resistance, Inbred Strain Edinburgh (ISE) and Kokstad, respectively. Larval development tests (LDT) were performed on five field isolates and both EC50 and EC95 were estimated. LDT EC95 values provided a wider interval between susceptible and resistant populations than EC50 values (EC95?=?1.96-57.93??M; EC50?=?0.05-0.39??M), and were found to be more appropriate for differentiating them. Real time PCR results showed resistance allele frequencies ranged from 20.9 to 76.7%. Our results suggest that levamisole resistance may be present in field populations but it is not as widespread as benzimidazole resistance. This methodology may be useful to monitor levamisole resistance in field populations of H. contortus.
650 $aBenzimidazoles
650 $aDrug resistance
650 $aGene frequency
650 $aGenetics
650 $aHelminths
650 $aLevamisole
650 $aNematode larvae
650 $aParasitology
650 $aPharmacology
650 $aSequence alignment
650 $aSheep diseases
650 $aTetramisole
653 $aAnthelmintic resistance
653 $aAntinematodal Agents
653 $aDrug effects
653 $aHaemonchiasis
653 $aNematode parasite
653 $aReal-time PCR
700 1 $aVASCONCELOS, J. F.
700 1 $aFROTA, G. A.
700 1 $aFREITAS, E. P. de
700 1 $aTEIXEIRA, M.
700 1 $aVIEIRA, L. da S.
700 1 $aBEVILAQUA, C. M. L.
700 1 $aMONTEIRO, J. P.
773 $tExperimental Parasitology$gv. 205, article 107734, Aug. 2019.
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