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Registro completo
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Biblioteca (s) : |
INIA Las Brujas; INIA Tacuarembó. |
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Fecha : |
04/02/2020 |
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Actualizado : |
11/08/2020 |
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Tipo de producción científica : |
Artículos en Revistas Indexadas Internacionales |
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Autor : |
SILVEIRA, C.S.; ARMENDANO, J.I.; MOORE, D.P.; CANTÓN, G.J.; MACÍAS-RIOSECO, M.; RIET-CORREA, F.; GIANNITTI, F. |
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Afiliación : |
CAROLINE DA SILVA SILVEIRA, INIA (Instituto Nacional de Investigación Agropecuaria), Uruguay; JOAQUÍN IGNACIO ARMENDANO, Facultad de Ciencias Agrarias, Universidad Nacional de Mar del Plata, Balcarce, Buenos Aires, Argentina; DADÍN PRANDO MOORE, Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Buenos Aires, Argentina; GERMÁN JOSÉ CANTÓN, Instituto Nacional de Tecnología Agropecuaria (INTA), Estación Experimental Agropecuaria Balcarce, Buenos Aires, Argentina; MELISSA MACÍAS RIOSECO, INIA (Instituto Nacional de Investigación Agropecuaria), Uruguay; FRANKLIN RIET-CORREA AMARAL, INIA (Instituto Nacional de Investigación Agropecuaria), Uruguay; FEDERICO GIANNITTI, INIA (Instituto Nacional de Investigación Agropecuaria), Uruguay. |
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Título : |
A comparative study of commercial ELISAs for antibody detection in the diagnostic investigation of Neospora caninum-associated abortion in dairy cattle herds in Uruguay. [Comparación de ELISAs comerciales para la detección de anticuerpos en la investigación diagnóstica del aborto asociado a Neospora caninum en rodeos lecheros de Uruguay]. |
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Fecha de publicación : |
2020 |
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Fuente / Imprenta : |
Revista Argentina de Microbiología, April - June 2020, Volume 52, Issue 2, Pages 107-114. OPEN ACCESS. Doi: https://doi.org/10.1016/j.ram.2019.06.004 |
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ISSN : |
0325-7541 |
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DOI : |
10.1016/j.ram.2019.06.004 |
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Idioma : |
Inglés |
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Notas : |
Article history: Recibido 01 marzo 2019. / Aceptado 24 junio 2019. / Disponible online 28 de Noviembre de 2019.
Corresponding author: da Silva Silveira, C.; Instituto Nacional de Investigación Agropecuaria (INIA), Plataforma de Investigación en Salud Animal, Estación Experimental La Estanzuela, Colonia, Uruguay; email:carolsilveira7@hotmail.com
Los autores agradecen a los veterinarios que enviaron las muestras de suero e información adicional de los rodeos estudiados al laboratorio de la Plataforma de Investigación en Salud Animal de INIA La Estanzuela. |
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Contenido : |
ABSTRACT.
Bovine abortion causes considerable economic losses to the livestock industry worldwide and is of concern for public health and food safety, given that many abortigenic infectious agents of cattle are zoonotic. Despite its importance, the etiological diagnosis of abortion in cattle is challenging both for veterinary practitioners and laboratory technicians, partly due to the difficulty in recovering aborted fetuses under extensive field conditions for pathological and microbiological diagnostic investigation, and in the early identification of aborted dams. Neospora caninum is a cosmopolitan protozoon identified as one of the main abortigenic agents in cattle worldwide. In this study we propose a comparative seroepidemiological approach for the diagnosis of abortion by N. caninum in dairy cattle. Samples from 12 to 93 cows/heifers with and without recent history of abortion (cases and controls) in four commercial dairy farms were tested. The ratio of controls to the cases tested varied from 1:1 to 4.6:1. All samples (n = 230) were analyzed by three commercial ELISA kits for the detection of anti-N. caninum antibodies. In all four dairy farms, the proportion of seropositive cows and/or heifers per kit was significantly higher in the cases than in the controls (Odds Ratios = 5.13 to 36, p = 0.0002 to 0.0485). The agreement among the three kits varied from weak to strong (Cohe?s kappa coefficients = 0.58 to 0.83). We conclude that, despite the imperfect agreement between these kits, all of them allowed to arrive at similar conclusions regarding the statistical association between N. caninum seropositivity and abortion, thus representing a useful tool for the diagnostic approach at the population level under field conditions.
© 2019 Asociación Argentina de Microbiología
RESUMEN.
A pesar de su importancia, el diagnóstico etiológico del aborto en bovinos representa un desafío técnico para los veterinarios clínicos y laboratoristas, en parte debido a la dificultad de recuperar los fetos abortados en condiciones extensivas de campo. Dicha dificultad limita la posibilidad de detectar tempranamente los vientres abortados y de efectuar la investigación patológica y microbiológica de los abortos. Neospora caninum es un protozoario cosmopolita identificado como uno de los principales agentes abortigénicos en bovinos. En este estudio proponemos una aproximación seroepidemiológica para diagnosticar abortos por N. caninum en bovinos lecheros usando kits de ELISA comerciales. Se procesaron muestras de entre 12 y 93 vacas y/o vaquillonas con (casos) y sin (controles) historia reciente de aborto en 4 tambos comerciales de Uruguay. La proporción controles:casos analizados varió entre 1:1 y 4,6:1. Las muestras (n=230) fueron analizadas mediante 3 kits comerciales para la detección de anticuerpos IgG anti-N. caninum. En los 4 tambos la proporción de vacas y/o vaquillonas seropositivas por cualquier kit fue significativamente mayor en los casos respecto de los controles (odds ratio=5,13 a 36; p=0,0002 a 0,0485). La concordancia entre los kits varió de débil a fuerte (coeficiente Kappa de Cohen=0,58 a 0,83). Concluimos que, a pesar de la imperfecta concordancia entre estos kits, el empleo de todos ellos permitió arribar a conclusiones similares respecto de la asociación estadísticamente significativa entre seropositividad a N. caninum y aborto, lo que demuestra la utilidad de estos kits para la aproximación diagnóstica del aborto a nivel poblacional en condiciones de campo. MenosABSTRACT.
Bovine abortion causes considerable economic losses to the livestock industry worldwide and is of concern for public health and food safety, given that many abortigenic infectious agents of cattle are zoonotic. Despite its importance, the etiological diagnosis of abortion in cattle is challenging both for veterinary practitioners and laboratory technicians, partly due to the difficulty in recovering aborted fetuses under extensive field conditions for pathological and microbiological diagnostic investigation, and in the early identification of aborted dams. Neospora caninum is a cosmopolitan protozoon identified as one of the main abortigenic agents in cattle worldwide. In this study we propose a comparative seroepidemiological approach for the diagnosis of abortion by N. caninum in dairy cattle. Samples from 12 to 93 cows/heifers with and without recent history of abortion (cases and controls) in four commercial dairy farms were tested. The ratio of controls to the cases tested varied from 1:1 to 4.6:1. All samples (n = 230) were analyzed by three commercial ELISA kits for the detection of anti-N. caninum antibodies. In all four dairy farms, the proportion of seropositive cows and/or heifers per kit was significantly higher in the cases than in the controls (Odds Ratios = 5.13 to 36, p = 0.0002 to 0.0485). The agreement among the three kits varied from weak to strong (Cohe?s kappa coefficients = 0.58 to 0.83). We conclude that, despite the imperfect agreement betw... Presentar Todo |
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Palabras claves : |
Cohe?s Kappa coefficient; Neospora caninum; PLATAFORMA SALUD ANIMAL; SEROLOGÍA. |
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Thesagro : |
ABORT; BOVINOS; ELISA; EPIDEMIOLOGIA. |
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Asunto categoría : |
L72 Plagas de los animales |
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URL : |
https://www.elsevier.es/es-revista-revista-argentina-microbiologia-372-pdf-S0325754119300835
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Marc : |
LEADER 05374naa a2200325 a 4500
001 1060678
005 2020-08-11
008 2020 bl uuuu u00u1 u #d
022 $a0325-7541
024 7 $a10.1016/j.ram.2019.06.004$2DOI
100 1 $aSILVEIRA, C.S.
245 $aA comparative study of commercial ELISAs for antibody detection in the diagnostic investigation of Neospora caninum-associated abortion in dairy cattle herds in Uruguay. [Comparación de ELISAs comerciales para la detección de anticuerpos en la investigación diagnóstica del aborto asociado a Neospora caninum en rodeos lecheros de Uruguay].$h[electronic resource]
260 $c2020
500 $aArticle history: Recibido 01 marzo 2019. / Aceptado 24 junio 2019. / Disponible online 28 de Noviembre de 2019. Corresponding author: da Silva Silveira, C.; Instituto Nacional de Investigación Agropecuaria (INIA), Plataforma de Investigación en Salud Animal, Estación Experimental La Estanzuela, Colonia, Uruguay; email:carolsilveira7@hotmail.com Los autores agradecen a los veterinarios que enviaron las muestras de suero e información adicional de los rodeos estudiados al laboratorio de la Plataforma de Investigación en Salud Animal de INIA La Estanzuela.
520 $aABSTRACT. Bovine abortion causes considerable economic losses to the livestock industry worldwide and is of concern for public health and food safety, given that many abortigenic infectious agents of cattle are zoonotic. Despite its importance, the etiological diagnosis of abortion in cattle is challenging both for veterinary practitioners and laboratory technicians, partly due to the difficulty in recovering aborted fetuses under extensive field conditions for pathological and microbiological diagnostic investigation, and in the early identification of aborted dams. Neospora caninum is a cosmopolitan protozoon identified as one of the main abortigenic agents in cattle worldwide. In this study we propose a comparative seroepidemiological approach for the diagnosis of abortion by N. caninum in dairy cattle. Samples from 12 to 93 cows/heifers with and without recent history of abortion (cases and controls) in four commercial dairy farms were tested. The ratio of controls to the cases tested varied from 1:1 to 4.6:1. All samples (n = 230) were analyzed by three commercial ELISA kits for the detection of anti-N. caninum antibodies. In all four dairy farms, the proportion of seropositive cows and/or heifers per kit was significantly higher in the cases than in the controls (Odds Ratios = 5.13 to 36, p = 0.0002 to 0.0485). The agreement among the three kits varied from weak to strong (Cohe?s kappa coefficients = 0.58 to 0.83). We conclude that, despite the imperfect agreement between these kits, all of them allowed to arrive at similar conclusions regarding the statistical association between N. caninum seropositivity and abortion, thus representing a useful tool for the diagnostic approach at the population level under field conditions. © 2019 Asociación Argentina de Microbiología RESUMEN. A pesar de su importancia, el diagnóstico etiológico del aborto en bovinos representa un desafío técnico para los veterinarios clínicos y laboratoristas, en parte debido a la dificultad de recuperar los fetos abortados en condiciones extensivas de campo. Dicha dificultad limita la posibilidad de detectar tempranamente los vientres abortados y de efectuar la investigación patológica y microbiológica de los abortos. Neospora caninum es un protozoario cosmopolita identificado como uno de los principales agentes abortigénicos en bovinos. En este estudio proponemos una aproximación seroepidemiológica para diagnosticar abortos por N. caninum en bovinos lecheros usando kits de ELISA comerciales. Se procesaron muestras de entre 12 y 93 vacas y/o vaquillonas con (casos) y sin (controles) historia reciente de aborto en 4 tambos comerciales de Uruguay. La proporción controles:casos analizados varió entre 1:1 y 4,6:1. Las muestras (n=230) fueron analizadas mediante 3 kits comerciales para la detección de anticuerpos IgG anti-N. caninum. En los 4 tambos la proporción de vacas y/o vaquillonas seropositivas por cualquier kit fue significativamente mayor en los casos respecto de los controles (odds ratio=5,13 a 36; p=0,0002 a 0,0485). La concordancia entre los kits varió de débil a fuerte (coeficiente Kappa de Cohen=0,58 a 0,83). Concluimos que, a pesar de la imperfecta concordancia entre estos kits, el empleo de todos ellos permitió arribar a conclusiones similares respecto de la asociación estadísticamente significativa entre seropositividad a N. caninum y aborto, lo que demuestra la utilidad de estos kits para la aproximación diagnóstica del aborto a nivel poblacional en condiciones de campo.
650 $aABORT
650 $aBOVINOS
650 $aELISA
650 $aEPIDEMIOLOGIA
653 $aCohe?s Kappa coefficient
653 $aNeospora caninum
653 $aPLATAFORMA SALUD ANIMAL
653 $aSEROLOGÍA
700 1 $aARMENDANO, J.I.
700 1 $aMOORE, D.P.
700 1 $aCANTÓN, G.J.
700 1 $aMACÍAS-RIOSECO, M.
700 1 $aRIET-CORREA, F.
700 1 $aGIANNITTI, F.
773 $tRevista Argentina de Microbiología, April - June 2020, Volume 52, Issue 2, Pages 107-114. OPEN ACCESS. Doi: https://doi.org/10.1016/j.ram.2019.06.004
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Registro original : |
INIA Las Brujas (LB) |
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 | Acceso al texto completo restringido a Biblioteca INIA Treinta y Tres. Por información adicional contacte bibliott@inia.org.uy. |
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Registro completo
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Biblioteca (s) : |
INIA Treinta y Tres. |
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Fecha actual : |
21/02/2014 |
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Actualizado : |
13/09/2018 |
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Tipo de producción científica : |
Artículos en Revistas Indexadas Internacionales |
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Circulación / Nivel : |
Internacional - A |
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Autor : |
NOYES, N.R.; WEINROTH, M.E.; PARKER, J.K.; DEAN, C.J.; LAKIN, S.M.; RAYMOND, R.A.; ROVIRA, P.J.; DOSTER, E.; ABDO, Z.; MARTIN, J.N.; JONES, K.L.; RUIZ, J.; BOUCHER, C.A.; BELK, K.E.; MORLEY, P.S. |
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Afiliación : |
NOELLE R. NOYES; MAGGIE E. WEINROTH; JENNIFER K. PARKER; CHRIS J. DEAN; STEVEN M. LAKIN; ROBERT A. RAYMOND; PABLO JUAN ROVIRA SANZ, INIA (Instituto Nacional de Investigación Agropecuaria), Uruguay; ENRIQUE DOSTER; ZAID ABDO; JENNIFER N. MARTIN; KENNETH L. JONES; JAIME RUIZ; CHRISTINA A. BOUCHER; KEITH E. BELK; PAUL S. MORLEY. |
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Título : |
Enrichment allows identification of diverse, rate elements in metagenomic resistome-virulome sequencing. |
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Fecha de publicación : |
2017 |
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Fuente / Imprenta : |
Microbiome, 2017, 5, p. 142 |
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Páginas : |
13 p. |
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DOI : |
10.1186/s40168-017-0361-8 |
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Idioma : |
Inglés |
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Notas : |
Article History: Received: 29 May 2017, Accepted: 5 October 2017, Published: 17 October 2017 |
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Contenido : |
Background: Shotgun metagenomic sequencing is increasingly utilized as a tool to evaluate ecological-level dynamics of antimicrobial resistance and virulence, in conjunction with microbiome analysis. Interest in use of this method for environmental surveillance of antimicrobial resistance and pathogenic microorganisms is also increasing. In published metagenomic datasets, the total of all resistance- and virulence-related sequences accounts for < 1% of all sequenced DNA, leading to imitations in detection of low-abundance resistome-virulome elements. This study describes the extent and composition of the low-abundance portion of the resistome-virulome, using a bait-capture and enrichment system that incorporates unique molecular indices to count DNA molecules and correct for enrichment bias.
Results: The use of the bait-capture and enrichment system significantly increased on-target sequencing of the resistome-virulome, enabling detection of an additional 1441 gene accessions and revealing a low-abundance portion of the resistome-virulome that was more diverse and compositionally different than that detected by more traditional
metagenomic assays. The low-abundance portion of the resistome-virulome also contained resistance genes with public health importance, such as extended-spectrum betalactamases, that were not detected using traditional shotgun metagenomic sequencing. In addition, the use of the bait-capture and enrichment system enabled identification of rare resistance gene haplotypes that were used to discriminate between sample origins.
Conclusions: These results demonstrate that the rare resistome-virulome contains valuable and unique information that can be utilized for both surveillance and population genetic investigations of resistance. Access to the rare resistomevirulome using the bait-capture and enrichment system validated in this study can greatly advance our understanding of
microbiome-resistome dynamics. MenosBackground: Shotgun metagenomic sequencing is increasingly utilized as a tool to evaluate ecological-level dynamics of antimicrobial resistance and virulence, in conjunction with microbiome analysis. Interest in use of this method for environmental surveillance of antimicrobial resistance and pathogenic microorganisms is also increasing. In published metagenomic datasets, the total of all resistance- and virulence-related sequences accounts for < 1% of all sequenced DNA, leading to imitations in detection of low-abundance resistome-virulome elements. This study describes the extent and composition of the low-abundance portion of the resistome-virulome, using a bait-capture and enrichment system that incorporates unique molecular indices to count DNA molecules and correct for enrichment bias.
Results: The use of the bait-capture and enrichment system significantly increased on-target sequencing of the resistome-virulome, enabling detection of an additional 1441 gene accessions and revealing a low-abundance portion of the resistome-virulome that was more diverse and compositionally different than that detected by more traditional
metagenomic assays. The low-abundance portion of the resistome-virulome also contained resistance genes with public health importance, such as extended-spectrum betalactamases, that were not detected using traditional shotgun metagenomic sequencing. In addition, the use of the bait-capture and enrichment system enabled identification of rare resistan... Presentar Todo |
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Palabras claves : |
ANTIMICROBIAL RESISTANCE; METAGENÓMICA; MICROBIAL ECOLOGY; MOLECULAR ENRICHMENT; RARE MICROBIOME; RESISTOME. |
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Thesagro : |
ANALISIS BIOLOGICO; ECOLOGIA MICROBIANA; RESISTENCIA A AGENTES DANINOS. |
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Asunto categoría : |
U30 Métodos de investigación |
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Marc : |
LEADER 03225naa a2200433 a 4500
001 1032862
005 2018-09-13
008 2017 bl uuuu u00u1 u #d
024 7 $a10.1186/s40168-017-0361-8$2DOI
100 1 $aNOYES, N.R.
245 $aEnrichment allows identification of diverse, rate elements in metagenomic resistome-virulome sequencing.$h[electronic resource]
260 $c2017
300 $a13 p.
500 $aArticle History: Received: 29 May 2017, Accepted: 5 October 2017, Published: 17 October 2017
520 $aBackground: Shotgun metagenomic sequencing is increasingly utilized as a tool to evaluate ecological-level dynamics of antimicrobial resistance and virulence, in conjunction with microbiome analysis. Interest in use of this method for environmental surveillance of antimicrobial resistance and pathogenic microorganisms is also increasing. In published metagenomic datasets, the total of all resistance- and virulence-related sequences accounts for < 1% of all sequenced DNA, leading to imitations in detection of low-abundance resistome-virulome elements. This study describes the extent and composition of the low-abundance portion of the resistome-virulome, using a bait-capture and enrichment system that incorporates unique molecular indices to count DNA molecules and correct for enrichment bias. Results: The use of the bait-capture and enrichment system significantly increased on-target sequencing of the resistome-virulome, enabling detection of an additional 1441 gene accessions and revealing a low-abundance portion of the resistome-virulome that was more diverse and compositionally different than that detected by more traditional metagenomic assays. The low-abundance portion of the resistome-virulome also contained resistance genes with public health importance, such as extended-spectrum betalactamases, that were not detected using traditional shotgun metagenomic sequencing. In addition, the use of the bait-capture and enrichment system enabled identification of rare resistance gene haplotypes that were used to discriminate between sample origins. Conclusions: These results demonstrate that the rare resistome-virulome contains valuable and unique information that can be utilized for both surveillance and population genetic investigations of resistance. Access to the rare resistomevirulome using the bait-capture and enrichment system validated in this study can greatly advance our understanding of microbiome-resistome dynamics.
650 $aANALISIS BIOLOGICO
650 $aECOLOGIA MICROBIANA
650 $aRESISTENCIA A AGENTES DANINOS
653 $aANTIMICROBIAL RESISTANCE
653 $aMETAGENÓMICA
653 $aMICROBIAL ECOLOGY
653 $aMOLECULAR ENRICHMENT
653 $aRARE MICROBIOME
653 $aRESISTOME
700 1 $aWEINROTH, M.E.
700 1 $aPARKER, J.K.
700 1 $aDEAN, C.J.
700 1 $aLAKIN, S.M.
700 1 $aRAYMOND, R.A.
700 1 $aROVIRA, P.J.
700 1 $aDOSTER, E.
700 1 $aABDO, Z.
700 1 $aMARTIN, J.N.
700 1 $aJONES, K.L.
700 1 $aRUIZ, J.
700 1 $aBOUCHER, C.A.
700 1 $aBELK, K.E.
700 1 $aMORLEY, P.S.
773 $tMicrobiome, 2017, 5, p. 142
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