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dc.contributor.author
Novoa, María Belén  
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Aguirre, Nerina Patricia  
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Ormaechea, Nadia  
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Palmero, Sebastián  
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Rouzic, Lisandro  
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Valentini, Beatriz Susana  
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Sarli, Macarena  
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Orcellet, Viviana Mercedes  
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Marengo, Rafael  
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Vanzini, Victor René  
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Primo, Maria Evangelina  
dc.date.available
2023-01-13T14:37:56Z  
dc.date.issued
2020-08  
dc.identifier.citation
Novoa, María Belén; Aguirre, Nerina Patricia; Ormaechea, Nadia; Palmero, Sebastián; Rouzic, Lisandro; et al.; Validation and field evaluation of a competitive inhibition ELISA based on the recombinant protein tSAG1 to detect anti-Neospora caninum antibodies in sheep and goats; Elsevier Science; Veterinary Parasitology; 284; 8-2020; 1-6  
dc.identifier.issn
0304-4017  
dc.identifier.uri
http://hdl.handle.net/11336/184686  
dc.description.abstract
Neospora caninum is a protozoan parasite that causes abortion and reproductive failure in small ruminants. We validated and evaluated under field conditions a competitive inhibition ELISA based on the truncated SAG1 protein (tSAG1) from N. caninum for the detection of anti-N. caninum antibodies in sheep and goat flocks. The assay was validated using 80 positive and 142 negative serum samples from sheep and goats analyzed by IFAT and immunoblot (IB). ciELISAtSAG1 was then used to evaluate the prevalence of anti-N. caninum antibodies in 1449 goats from 143 flocks and 385 sheep from 40 flocks and compared to IFAT. The prevalence of anti-Toxoplasma gondii antibodies was evaluated by IFAT. The ciELISAtSAG1 cut-off was ≥ 36 percent inhibition, with a diagnostic sensitivity of 100.0 % (95 % CI = 95.4–100.0 %) and a diagnostic specificity of 98.6 % (95 % CI = 95.0–99.8 %) relative to the agreement between IFAT and IB. The field evaluation revealed a concordance between ciELISAtSAG1 and IFAT of 97.4 %, with an agreement (κ) of 0.90 for sheep sera, and a concordance of 96.5 % with κ = 0.85 for goat sera. The overall prevalence of anti-N. caninum antibodies in sheep was 14.3 % by IFAT and 15.8 % by ciELISAtSAG1. In goats, prevalence was 12.9 % by IFAT and 14.6 % by ciELISAtSAG1. The overall prevalence of anti-T. gondii antibodies was 28.8 % in goats and 43.8 % in sheep. The ciELISAtSAG1 could be useful for large-scale detection of anti-N. caninum antibodies in sheep and goats, and for seroepidemiological investigations due to its appropriate sensitivity and specificity, and the simplicity of production.  
dc.format
application/pdf  
dc.language.iso
eng  
dc.publisher
Elsevier Science  
dc.rights
info:eu-repo/semantics/openAccess  
dc.rights.uri
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/  
dc.subject
CIELISA  
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DIAGNOSIS  
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GOAT  
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N. CANINUM  
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PREVALENCE  
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SAG1  
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SHEEP  
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T. GONDII  
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Ciencias Veterinarias  
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Ciencias Veterinarias  
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CIENCIAS AGRÍCOLAS  
dc.title
Validation and field evaluation of a competitive inhibition ELISA based on the recombinant protein tSAG1 to detect anti-Neospora caninum antibodies in sheep and goats  
dc.type
info:eu-repo/semantics/article  
dc.type
info:ar-repo/semantics/artículo  
dc.type
info:eu-repo/semantics/publishedVersion  
dc.date.updated
2022-09-22T15:10:45Z  
dc.journal.volume
284  
dc.journal.pagination
1-6  
dc.journal.pais
Países Bajos  
dc.journal.ciudad
Amsterdam  
dc.description.fil
Fil: Novoa, María Belén. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Instituto Nacional de Tecnología Agropecuaria. Centro Regional Santa Fe. Estación Experimental Agropecuaria Rafaela; Argentina  
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Fil: Aguirre, Nerina Patricia. Instituto Nacional de Tecnología Agropecuaria. Centro Regional Santa Fe. Estación Experimental Agropecuaria Rafaela; Argentina  
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Fil: Ormaechea, Nadia. Universidad Nacional del Litoral; Argentina  
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Fil: Palmero, Sebastián. Universidad Nacional del Litoral; Argentina  
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Fil: Rouzic, Lisandro. Universidad Nacional del Litoral; Argentina  
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Fil: Valentini, Beatriz Susana. Instituto Nacional de Tecnología Agropecuaria. Centro Regional Santa Fe. Estación Experimental Agropecuaria Rafaela; Argentina  
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Fil: Sarli, Macarena. Instituto Nacional de Tecnología Agropecuaria. Centro Regional Santa Fe. Estación Experimental Agropecuaria Rafaela; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina  
dc.description.fil
Fil: Orcellet, Viviana Mercedes. Universidad Nacional del Litoral; Argentina  
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Fil: Marengo, Rafael. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina  
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Fil: Vanzini, Victor René. Instituto Nacional de Tecnología Agropecuaria. Centro Regional Santa Fe. Estación Experimental Agropecuaria Rafaela; Argentina  
dc.description.fil
Fil: Primo, Maria Evangelina. Instituto Nacional de Tecnología Agropecuaria. Centro Regional Santa Fe. Estación Experimental Agropecuaria Rafaela; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Santa Fe. Instituto de Investigación de la Cadena Láctea. - Instituto Nacional de Tecnología Agropecuaria. Centro Regional Santa Fe. Estación Experimental Agropecuaria Rafaela. Instituto de Investigación de la Cadena Láctea; Argentina  
dc.journal.title
Veterinary Parasitology  
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/url/https://linkinghub.elsevier.com/retrieve/pii/S0304401720301813  
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/doi/http://dx.doi.org/10.1016/j.vetpar.2020.109201