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Registro completo
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Biblioteca (s) : |
INIA Las Brujas. |
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Fecha : |
22/09/2022 |
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Actualizado : |
22/09/2022 |
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Tipo de producción científica : |
Artículos en Revistas Indexadas Internacionales |
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Autor : |
UMPIÉRREZ , A.; ERNST, E.; CARDOZO, A.; TORRES, A.; FERNÁNDEZ, M.; FRAGA, M.; VIGNOLI, R.; BADO, I.; VIDAL, R.; ZUNINO, P. |
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Afiliación : |
ANA UMPIÉRREZ, Departamento de Microbiología, Instituto de Investigaciones Biológicas Clemente Estable, Montevideo, Uruguay; DÉBORAH ERNST, Departamento de Microbiología, Instituto de Investigaciones Biológicas Clemente Estable, Montevideo, Uruguay.; ANDREA CARDOZO, Departamento de Microbiología, Instituto de Investigaciones Biológicas Clemente Estable, Montevideo, Uruguay.; ALEXIA TORRES, Programa de Microbiología y Micología, Instituto de Ciencias Biomédicas, Facultad de Medicina, Universidad de Chile, Santiago, Chile.; MAGALÍ FERNÁNDEZ, Departamento de Microbiología, Instituto de Investigaciones Biológicas Clemente Estable, Montevideo, Uruguay.; MARTIN FRAGA COTELO, INIA (Instituto Nacional de Investigación Agropecuaria), Uruguay; RAFAEL VIGNOLI, Departamento de Bacteriología y Virología, Instituto de Higiene, Facultad de Medicina, Universidad de la República, Montevideo, Uruguay.; INÉS BADO, Departamento de Bacteriología y Virología, Instituto de Higiene, Facultad de Medicina, Universidad de la República, Montevideo, Uruguay.; ROBERTO VIDAL, Programa de Microbiología y Micología, Instituto de Ciencias Biomédicas, Facultad de Medicina, Universidad de Chile, Santiago, Chile; Instituto Milenio de Inmunología e Inmunoterapia, Facultad de Medicina, Universidad de Chile, Santiago, Chile.; PABLO ZUNINO, Departamento de Microbiología, Instituto de Investigaciones Biológicas Clemente Estable, Montevideo, Uruguay. |
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Título : |
Non-O157 Shiga toxin-producing Escherichia coli with potential harmful profiles to humans are isolated from the faeces of calves in Uruguay. |
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Fecha de publicación : |
2022 |
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Fuente / Imprenta : |
Austral Journal of Veterinary Sciences, 2022, Vol. 54 Issue 2, p.45-53. doi: https://doi.org/10.4067/S0719-81322022000200045 |
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Descripción física : |
SSN 0719-8132 (version on-line)
ISSN 0719-8000 (version print) |
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ISSN : |
0719-8132 (print); e-ISSN 0719-8000 (electronic) |
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DOI : |
10.4067/S0719-81322022000200045 |
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Idioma : |
Inglés |
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Notas : |
Article history: Received 12 October 2021; Accepted 30 December 2021; Published 09 May 2022.
Corresponding author: Ana Umpiérrez; Avenida Italia 3318, CP 11600, Montevideo, Uruguay; aumpierrez@iibce.edu.uy |
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Contenido : |
ABSTRACT.- Shiga toxin-producing Escherichia coli (STEC) infections are responsible for acute illnesses and deaths in humans. Cattle and humans are exposed to STEC through faeces and contaminated food and water. The big six and O157 STEC serogroups are important food and water-borne human pathogens. Additionally, Stx1a, Stx2a and Stx2c subtypes are highly associated with the haemolytic uremic syndrome. This study aimed to determine Shiga toxin-subtypes, the presence of antigen 43 families, the genotypic and phenotypic antimicrobial susceptibility profiles, O-serogrouping, phylotypes and phylogenetic relatedness of STEC of calf origin. Sixteen STEC isolates from calf origin were analysed. PCR was performed to determine Stx subtypes, serogroups, the presence of ag43 I and IIand phylotypes. The antimicrobial profile was evaluated and the presence of PMQR and fosfomycin genes was determined by PCR. The clonal relatedness of STEC was studied by PFGE. The genotypes stx1a+c,stx1a+, stx1a+/stx2e+, stx1a+c/stx2e and stx2awere detected. Ag43 II was the most prevalent among subfamilies. STEC isolates were serotyped as O103 (n=5) and O111 (n=6). Fifty per cent of the isolates were classified as B1 phylogroup, 4/16 as E, 1/16 as C, and 1/16 as F. Non-O157 STEC isolates showed a high level of diversity, independent of the geographical and farm-origin. Isolates were resistant to ampicillin, ciprofloxacin, gentamicin, and fosfomycin-trometamol. The gene fosA7 was detected in 1 isolate. The virulence profiles, including Shiga toxin-subtypes and serogroups, denote the potential harm of non-O157 STEC isolates to humans. We also confirmed that circulating non-O157 STEC from cattle present genetic heterogeneity and are susceptible to antibiotics. MenosABSTRACT.- Shiga toxin-producing Escherichia coli (STEC) infections are responsible for acute illnesses and deaths in humans. Cattle and humans are exposed to STEC through faeces and contaminated food and water. The big six and O157 STEC serogroups are important food and water-borne human pathogens. Additionally, Stx1a, Stx2a and Stx2c subtypes are highly associated with the haemolytic uremic syndrome. This study aimed to determine Shiga toxin-subtypes, the presence of antigen 43 families, the genotypic and phenotypic antimicrobial susceptibility profiles, O-serogrouping, phylotypes and phylogenetic relatedness of STEC of calf origin. Sixteen STEC isolates from calf origin were analysed. PCR was performed to determine Stx subtypes, serogroups, the presence of ag43 I and IIand phylotypes. The antimicrobial profile was evaluated and the presence of PMQR and fosfomycin genes was determined by PCR. The clonal relatedness of STEC was studied by PFGE. The genotypes stx1a+c,stx1a+, stx1a+/stx2e+, stx1a+c/stx2e and stx2awere detected. Ag43 II was the most prevalent among subfamilies. STEC isolates were serotyped as O103 (n=5) and O111 (n=6). Fifty per cent of the isolates were classified as B1 phylogroup, 4/16 as E, 1/16 as C, and 1/16 as F. Non-O157 STEC isolates showed a high level of diversity, independent of the geographical and farm-origin. Isolates were resistant to ampicillin, ciprofloxacin, gentamicin, and fosfomycin-trometamol. The gene fosA7 was detected in 1 isolate. The ... Presentar Todo |
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Palabras claves : |
Antimicrobial resistance; Non-O157 STEC; PLATAFORMA EN SALUD ANIMAL; Shiga toxin subtypes. |
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Asunto categoría : |
L01 Ganadería |
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URL : |
http://www.ainfo.inia.uy/digital/bitstream/item/16768/1/10.4067-s0719-81322022000200045.pdf
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Marc : |
LEADER 03084naa a2200325 a 4500
001 1063578
005 2022-09-22
008 2022 bl uuuu u00u1 u #d
022 $a0719-8132 (print); e-ISSN 0719-8000 (electronic)
024 7 $a10.4067/S0719-81322022000200045$2DOI
100 1 $aUMPIÉRREZ , A.
245 $aNon-O157 Shiga toxin-producing Escherichia coli with potential harmful profiles to humans are isolated from the faeces of calves in Uruguay.$h[electronic resource]
260 $c2022
300 $cSSN 0719-8132 (version on-line) ISSN 0719-8000 (version print)
500 $aArticle history: Received 12 October 2021; Accepted 30 December 2021; Published 09 May 2022. Corresponding author: Ana Umpiérrez; Avenida Italia 3318, CP 11600, Montevideo, Uruguay; aumpierrez@iibce.edu.uy
520 $aABSTRACT.- Shiga toxin-producing Escherichia coli (STEC) infections are responsible for acute illnesses and deaths in humans. Cattle and humans are exposed to STEC through faeces and contaminated food and water. The big six and O157 STEC serogroups are important food and water-borne human pathogens. Additionally, Stx1a, Stx2a and Stx2c subtypes are highly associated with the haemolytic uremic syndrome. This study aimed to determine Shiga toxin-subtypes, the presence of antigen 43 families, the genotypic and phenotypic antimicrobial susceptibility profiles, O-serogrouping, phylotypes and phylogenetic relatedness of STEC of calf origin. Sixteen STEC isolates from calf origin were analysed. PCR was performed to determine Stx subtypes, serogroups, the presence of ag43 I and IIand phylotypes. The antimicrobial profile was evaluated and the presence of PMQR and fosfomycin genes was determined by PCR. The clonal relatedness of STEC was studied by PFGE. The genotypes stx1a+c,stx1a+, stx1a+/stx2e+, stx1a+c/stx2e and stx2awere detected. Ag43 II was the most prevalent among subfamilies. STEC isolates were serotyped as O103 (n=5) and O111 (n=6). Fifty per cent of the isolates were classified as B1 phylogroup, 4/16 as E, 1/16 as C, and 1/16 as F. Non-O157 STEC isolates showed a high level of diversity, independent of the geographical and farm-origin. Isolates were resistant to ampicillin, ciprofloxacin, gentamicin, and fosfomycin-trometamol. The gene fosA7 was detected in 1 isolate. The virulence profiles, including Shiga toxin-subtypes and serogroups, denote the potential harm of non-O157 STEC isolates to humans. We also confirmed that circulating non-O157 STEC from cattle present genetic heterogeneity and are susceptible to antibiotics.
653 $aAntimicrobial resistance
653 $aNon-O157 STEC
653 $aPLATAFORMA EN SALUD ANIMAL
653 $aShiga toxin subtypes
700 1 $aERNST, E.
700 1 $aCARDOZO, A.
700 1 $aTORRES, A.
700 1 $aFERNÁNDEZ, M.
700 1 $aFRAGA, M.
700 1 $aVIGNOLI, R.
700 1 $aBADO, I.
700 1 $aVIDAL, R.
700 1 $aZUNINO, P.
773 $tAustral Journal of Veterinary Sciences, 2022, Vol. 54 Issue 2, p.45-53. doi: https://doi.org/10.4067/S0719-81322022000200045
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INIA Las Brujas (LB) |
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Registro completo
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Biblioteca (s) : |
INIA Las Brujas. |
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Fecha actual : |
01/09/2020 |
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Actualizado : |
01/09/2020 |
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Tipo de producción científica : |
Artículos en Revistas Indexadas Internacionales |
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Circulación / Nivel : |
Internacional - -- |
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Autor : |
BERGAMO, L.W.; SILVA-BRANDÃO, K.L.; VICENTINI, R.; FRESIA, P.; AZEREDO-ESPIN, A.M.L |
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Afiliación : |
LUANA WALRAVENS BERGAMO, Universidade Estadual de Campinas (CBMEG-UNICAMP), Campinas SP, Brazil; KARINA LUCAS SILVA-BRANDÃO, Universidade Estadual de Campinas (CBMEG-UNICAMP), Campinas SP, Brazil; Universidade Federal do ABC (CCNH-UFABC), Santo André SP, Brazil; RENATO VICENTINI, Universidade Estadual de Campinas (UNICAMP), Campinas SP, Brazil; PABLO FRESIA, Unidad Mixta UMPI, Institut Pasteur Montevideo + INIA, Montevideo, Uruguay; ANA MARIA LIMA AZEREDO-ESPIN, Universidade Estadual de Campinas (UNICAMP), Campinas SP, Brazil; Universidade Estadual de Campinas (CBMEG-UNICAMP), Campinas SP, Brazil. |
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Título : |
Genetic differentiation of a new world screwworm fly population from uruguay detected by snps, mitochondrial dna and microsatellites in two consecutive years. |
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Fecha de publicación : |
2020 |
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Fuente / Imprenta : |
Insects, August 2020, Volume 11, Issue 8, Pages 1-16, Article number 539. OPEN ACCESS. DOI: https://doi.org/10.3390/insects11080539 |
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DOI : |
10.3390/insects11080539 |
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Idioma : |
Inglés |
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Notas : |
Article history: Received 9 July 2020; Revised 2 August 2020; Accepted 9 August 2020; Published 16 August 2020.
This article belongs to the Special Issue Population Genetics of Insects - https://www.mdpi.com/journal/insects/special_issues/population_genetics |
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Contenido : |
ABSTRACT.
The New World screwworm (NWS) fly, Cochliomyia hominivorax (Diptera: Calliphoridae), is an economically important ectoparasite currently distributed in South America and in the Caribbean basin. The successful eradication of this species in USA, Mexico and continental Central America was achieved by a control program based on the sterile insect technique (SIT). In order to implement a genetic control strategy over the NWS fly?s current area of occurrence, first, it is necessary to understand the species dynamics and population structure. In order to address this objective, the spatial genetic structure of the NWS fly was previously reported in South America based on different genetic markers; however, to date, no study has investigated temporal changes in the genetic composition of its populations. In the current study, the temporal genetic structure of a NWS fly population from Uruguay was investigated through two consecutive samplings from the same locality over an interval of approximately 18 generations. The genetic structure was accessed with neutral and under selection SNPs obtained with genotyping-by-sequencing. The results gathered with these data were compared to estimates achieved with mitochondrial DNA sequences and eight microsatellite markers. Temporal changes in the genetic composition were revealed by all three molecular markers, which may be attributed to seasonal changes in the NWS fly?s southern distribution. SNPs were employed for the first time for estimating the genetic structure in a NWS fly population; these results provide new clues and perspectives on its population genetic structure. This approach could have significant implications for the planning and implementation of management programs.
© 2020 by the authors. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (http://creativecommons.org/licenses/by/4.0/). MenosABSTRACT.
The New World screwworm (NWS) fly, Cochliomyia hominivorax (Diptera: Calliphoridae), is an economically important ectoparasite currently distributed in South America and in the Caribbean basin. The successful eradication of this species in USA, Mexico and continental Central America was achieved by a control program based on the sterile insect technique (SIT). In order to implement a genetic control strategy over the NWS fly?s current area of occurrence, first, it is necessary to understand the species dynamics and population structure. In order to address this objective, the spatial genetic structure of the NWS fly was previously reported in South America based on different genetic markers; however, to date, no study has investigated temporal changes in the genetic composition of its populations. In the current study, the temporal genetic structure of a NWS fly population from Uruguay was investigated through two consecutive samplings from the same locality over an interval of approximately 18 generations. The genetic structure was accessed with neutral and under selection SNPs obtained with genotyping-by-sequencing. The results gathered with these data were compared to estimates achieved with mitochondrial DNA sequences and eight microsatellite markers. Temporal changes in the genetic composition were revealed by all three molecular markers, which may be attributed to seasonal changes in the NWS fly?s southern distribution. SNPs were employed for the first time f... Presentar Todo |
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Palabras claves : |
Effective population size (Ne); Genotyping-by-sequencing (GBS); Insecticide resistance; Population; Population genomics. |
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Asunto categoría : |
A50 Investigación agraria |
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URL : |
https://www.mdpi.com/2075-4450/11/8/539/htm
https://www.mdpi.com/2075-4450/11/8/539/pdf
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Marc : |
LEADER 03179naa a2200253 a 4500
001 1061289
005 2020-09-01
008 2020 bl uuuu u00u1 u #d
024 7 $a10.3390/insects11080539$2DOI
100 1 $aBERGAMO, L.W.
245 $aGenetic differentiation of a new world screwworm fly population from uruguay detected by snps, mitochondrial dna and microsatellites in two consecutive years.$h[electronic resource]
260 $c2020
500 $aArticle history: Received 9 July 2020; Revised 2 August 2020; Accepted 9 August 2020; Published 16 August 2020. This article belongs to the Special Issue Population Genetics of Insects - https://www.mdpi.com/journal/insects/special_issues/population_genetics
520 $aABSTRACT. The New World screwworm (NWS) fly, Cochliomyia hominivorax (Diptera: Calliphoridae), is an economically important ectoparasite currently distributed in South America and in the Caribbean basin. The successful eradication of this species in USA, Mexico and continental Central America was achieved by a control program based on the sterile insect technique (SIT). In order to implement a genetic control strategy over the NWS fly?s current area of occurrence, first, it is necessary to understand the species dynamics and population structure. In order to address this objective, the spatial genetic structure of the NWS fly was previously reported in South America based on different genetic markers; however, to date, no study has investigated temporal changes in the genetic composition of its populations. In the current study, the temporal genetic structure of a NWS fly population from Uruguay was investigated through two consecutive samplings from the same locality over an interval of approximately 18 generations. The genetic structure was accessed with neutral and under selection SNPs obtained with genotyping-by-sequencing. The results gathered with these data were compared to estimates achieved with mitochondrial DNA sequences and eight microsatellite markers. Temporal changes in the genetic composition were revealed by all three molecular markers, which may be attributed to seasonal changes in the NWS fly?s southern distribution. SNPs were employed for the first time for estimating the genetic structure in a NWS fly population; these results provide new clues and perspectives on its population genetic structure. This approach could have significant implications for the planning and implementation of management programs. © 2020 by the authors. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (http://creativecommons.org/licenses/by/4.0/).
653 $aEffective population size (Ne)
653 $aGenotyping-by-sequencing (GBS)
653 $aInsecticide resistance
653 $aPopulation
653 $aPopulation genomics
700 1 $aSILVA-BRANDÃO, K.L.
700 1 $aVICENTINI, R.
700 1 $aFRESIA, P.
700 1 $aAZEREDO-ESPIN, A.M.L
773 $tInsects, August 2020, Volume 11, Issue 8, Pages 1-16, Article number 539. OPEN ACCESS. DOI: https://doi.org/10.3390/insects11080539
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