Does Shiga Toxin-Producing Escherichia coli and Listeria monocytogenes Contribute Significantly to the Burden of Antimicrobial Resistance in Uruguay?

Mota, María Inés - Vázquez, Sylvia - Cornejo, Cecilia - D’Alessandro, Bruno - Braga, Valeria - Caetano, Ana - Betancor, Laura - Varela, Gustavo

Resumen:

Shiga toxin-producing Escherichia coli (STEC) and Listeria monocytogenes are worldwide recognized zoonotic pathogens. Recent reports have emerged about the circulation of antimicrobial-resistant STEC and L. monocytogenes isolates. To assess the frequency of antimicrobial resistance and related genes in these pathogens, we studied 45 STEC and 50 L. monocytogenes isolates locally recovered from different sources. Antimicrobial susceptibility testing was performed by disk-diffusion method, and the genomic sequences of three selected STEC and from all 50 L. monocytogenes isolates were analyzed for antibiotic resistance genes. Four STEC and three L. monocytogenes isolates were phenotypically resistant to at least one of the antibiotics tested. Resistance genes aph(3′′)-Ib, aph(3′ )-Ia, aph(6)-Id, blaT EM−1B, sul2, mef(A), and tet(A) were found in a human STEC ampicillin-resistant isolate. All L. monocytogenes isolates harbored fosX, lin, mdrL, lde fepA, and norB. Overall resistance in L. monocytogenes and STEC was low or middle. However, the high load of resistance genes found, even in susceptible isolates, suggests that these pathogens could contribute to the burden of antimicrobial resistance.

Detalles Bibliográficos
2020
Agencia Nacional de Investigación e Innovación (ANII)
Antimicrobial resistance
Shiga toxin-producing Escherichia coli (STEC)
Listeria monocytogenes
Zoonotic pathogens
Resistance genes
Inglés
Universidad de la República
COLIBRI
https://hdl.handle.net/20.500.12008/50551
Acceso abierto
Licencia Creative Commons Atribución (CC - By 4.0)
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author Mota, María Inés
author2 Vázquez, Sylvia
Cornejo, Cecilia
D’Alessandro, Bruno
Braga, Valeria
Caetano, Ana
Betancor, Laura
Varela, Gustavo
author2_role author
author
author
author
author
author
author
author_facet Mota, María Inés
Vázquez, Sylvia
Cornejo, Cecilia
D’Alessandro, Bruno
Braga, Valeria
Caetano, Ana
Betancor, Laura
Varela, Gustavo
author_role author
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collection COLIBRI
dc.contributor.filiacion.none.fl_str_mv Mota María Inés, Universidad de la República (Uruguay). Facultad de Medicina. Instituto de Higiene. Unidad Académica Bacteriología y Virología
Vázquez Sylvia, Universidad de la República (Uruguay). Facultad de Medicina. Instituto de Higiene. Unidad Académica Bacteriología y Virología
Cornejo Cecilia, Universidad de la República (Uruguay). Facultad de Medicina. Instituto de Higiene. Unidad Académica Bacteriología y Virología
D’Alessandro Bruno, Universidad de la República (Uruguay). Facultad de Medicina. Instituto de Higiene. Unidad Académica Desarrollo Biotecnológico
Braga Valeria, Universidad de la República (Uruguay). Facultad de Medicina. Instituto de Higiene. Unidad Académica Bacteriología y Virología
Caetano Ana, Universidad de la República (Uruguay). Facultad de Medicina. Instituto de Higiene. Unidad Académica Bacteriología y Virología
Betancor Laura, Universidad de la República (Uruguay). Facultad de Medicina. Instituto de Higiene. Unidad Académica Bacteriología y Virología
Varela Gustavo, Universidad de la República (Uruguay). Facultad de Medicina. Instituto de Higiene. Unidad Académica Bacteriología y Virología
dc.coverage.spatial.es.fl_str_mv URUGUAY
dc.creator.none.fl_str_mv Mota, María Inés
Vázquez, Sylvia
Cornejo, Cecilia
D’Alessandro, Bruno
Braga, Valeria
Caetano, Ana
Betancor, Laura
Varela, Gustavo
dc.date.accessioned.none.fl_str_mv 2025-07-10T17:54:55Z
dc.date.available.none.fl_str_mv 2025-07-10T17:54:55Z
dc.date.issued.none.fl_str_mv 2020
dc.description.abstract.none.fl_txt_mv Shiga toxin-producing Escherichia coli (STEC) and Listeria monocytogenes are worldwide recognized zoonotic pathogens. Recent reports have emerged about the circulation of antimicrobial-resistant STEC and L. monocytogenes isolates. To assess the frequency of antimicrobial resistance and related genes in these pathogens, we studied 45 STEC and 50 L. monocytogenes isolates locally recovered from different sources. Antimicrobial susceptibility testing was performed by disk-diffusion method, and the genomic sequences of three selected STEC and from all 50 L. monocytogenes isolates were analyzed for antibiotic resistance genes. Four STEC and three L. monocytogenes isolates were phenotypically resistant to at least one of the antibiotics tested. Resistance genes aph(3′′)-Ib, aph(3′ )-Ia, aph(6)-Id, blaT EM−1B, sul2, mef(A), and tet(A) were found in a human STEC ampicillin-resistant isolate. All L. monocytogenes isolates harbored fosX, lin, mdrL, lde fepA, and norB. Overall resistance in L. monocytogenes and STEC was low or middle. However, the high load of resistance genes found, even in susceptible isolates, suggests that these pathogens could contribute to the burden of antimicrobial resistance.
dc.description.sponsorship.none.fl_txt_mv Agencia Nacional de Investigación e Innovación (ANII)
dc.format.mimetype.es.fl_str_mv application/pdf
dc.identifier.citation.es.fl_str_mv MOTA, MI., VÁZQUEZ, S., CORNEJO, C., y otros. Does Shiga Toxin-Producing Escherichia coli and Listeria monocytogenes Contribute Significantly to the Burden of Antimicrobial Resistance in Uruguay?. Front. Vet. Sci [en línea] 2020, 7. DOI: 10.3389/fvets.2020.583930
dc.identifier.doi.none.fl_str_mv 10.3389/fvets.2020.583930
dc.identifier.uri.none.fl_str_mv https://hdl.handle.net/20.500.12008/50551
dc.language.iso.none.fl_str_mv en
eng
dc.relation.none.fl_str_mv Front. Vet. Sci. 7, 2020
dc.rights.license.none.fl_str_mv Licencia Creative Commons Atribución (CC - By 4.0)
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
dc.source.none.fl_str_mv reponame:COLIBRI
instname:Universidad de la República
instacron:Universidad de la República
dc.subject.es.fl_str_mv Antimicrobial resistance
Shiga toxin-producing Escherichia coli (STEC)
Listeria monocytogenes
Zoonotic pathogens
Resistance genes
dc.title.none.fl_str_mv Does Shiga Toxin-Producing Escherichia coli and Listeria monocytogenes Contribute Significantly to the Burden of Antimicrobial Resistance in Uruguay?
dc.type.es.fl_str_mv Artículo
dc.type.none.fl_str_mv info:eu-repo/semantics/article
dc.type.version.none.fl_str_mv info:eu-repo/semantics/publishedVersion
description Shiga toxin-producing Escherichia coli (STEC) and Listeria monocytogenes are worldwide recognized zoonotic pathogens. Recent reports have emerged about the circulation of antimicrobial-resistant STEC and L. monocytogenes isolates. To assess the frequency of antimicrobial resistance and related genes in these pathogens, we studied 45 STEC and 50 L. monocytogenes isolates locally recovered from different sources. Antimicrobial susceptibility testing was performed by disk-diffusion method, and the genomic sequences of three selected STEC and from all 50 L. monocytogenes isolates were analyzed for antibiotic resistance genes. Four STEC and three L. monocytogenes isolates were phenotypically resistant to at least one of the antibiotics tested. Resistance genes aph(3′′)-Ib, aph(3′ )-Ia, aph(6)-Id, blaT EM−1B, sul2, mef(A), and tet(A) were found in a human STEC ampicillin-resistant isolate. All L. monocytogenes isolates harbored fosX, lin, mdrL, lde fepA, and norB. Overall resistance in L. monocytogenes and STEC was low or middle. However, the high load of resistance genes found, even in susceptible isolates, suggests that these pathogens could contribute to the burden of antimicrobial resistance.
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identifier_str_mv MOTA, MI., VÁZQUEZ, S., CORNEJO, C., y otros. Does Shiga Toxin-Producing Escherichia coli and Listeria monocytogenes Contribute Significantly to the Burden of Antimicrobial Resistance in Uruguay?. Front. Vet. Sci [en línea] 2020, 7. DOI: 10.3389/fvets.2020.583930
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repository.mail.fl_str_mv karina.camps@seciu.edu.uy
repository.name.fl_str_mv COLIBRI - Universidad de la República
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rights_invalid_str_mv Licencia Creative Commons Atribución (CC - By 4.0)
spelling Mota María Inés, Universidad de la República (Uruguay). Facultad de Medicina. Instituto de Higiene. Unidad Académica Bacteriología y VirologíaVázquez Sylvia, Universidad de la República (Uruguay). Facultad de Medicina. Instituto de Higiene. Unidad Académica Bacteriología y VirologíaCornejo Cecilia, Universidad de la República (Uruguay). Facultad de Medicina. Instituto de Higiene. Unidad Académica Bacteriología y VirologíaD’Alessandro Bruno, Universidad de la República (Uruguay). Facultad de Medicina. Instituto de Higiene. Unidad Académica Desarrollo BiotecnológicoBraga Valeria, Universidad de la República (Uruguay). Facultad de Medicina. Instituto de Higiene. Unidad Académica Bacteriología y VirologíaCaetano Ana, Universidad de la República (Uruguay). Facultad de Medicina. Instituto de Higiene. Unidad Académica Bacteriología y VirologíaBetancor Laura, Universidad de la República (Uruguay). Facultad de Medicina. Instituto de Higiene. Unidad Académica Bacteriología y VirologíaVarela Gustavo, Universidad de la República (Uruguay). Facultad de Medicina. Instituto de Higiene. Unidad Académica Bacteriología y VirologíaURUGUAY2025-07-10T17:54:55Z2025-07-10T17:54:55Z2020MOTA, MI., VÁZQUEZ, S., CORNEJO, C., y otros. Does Shiga Toxin-Producing Escherichia coli and Listeria monocytogenes Contribute Significantly to the Burden of Antimicrobial Resistance in Uruguay?. Front. Vet. Sci [en línea] 2020, 7. DOI: 10.3389/fvets.2020.583930https://hdl.handle.net/20.500.12008/5055110.3389/fvets.2020.583930Shiga toxin-producing Escherichia coli (STEC) and Listeria monocytogenes are worldwide recognized zoonotic pathogens. Recent reports have emerged about the circulation of antimicrobial-resistant STEC and L. monocytogenes isolates. To assess the frequency of antimicrobial resistance and related genes in these pathogens, we studied 45 STEC and 50 L. monocytogenes isolates locally recovered from different sources. Antimicrobial susceptibility testing was performed by disk-diffusion method, and the genomic sequences of three selected STEC and from all 50 L. monocytogenes isolates were analyzed for antibiotic resistance genes. Four STEC and three L. monocytogenes isolates were phenotypically resistant to at least one of the antibiotics tested. Resistance genes aph(3′′)-Ib, aph(3′ )-Ia, aph(6)-Id, blaT EM−1B, sul2, mef(A), and tet(A) were found in a human STEC ampicillin-resistant isolate. All L. monocytogenes isolates harbored fosX, lin, mdrL, lde fepA, and norB. Overall resistance in L. monocytogenes and STEC was low or middle. However, the high load of resistance genes found, even in susceptible isolates, suggests that these pathogens could contribute to the burden of antimicrobial resistance.Submitted by Haller Mariana (mhaller@higiene.edu.uy) on 2025-07-10T17:43:40Z No. of bitstreams: 2 license_rdf: 24942 bytes, checksum: 58cb336ce230a47d2f88ad02838a665f (MD5) Does Shiga Toxin-Producing Escherichia coli and Listeria monocytogenes Contribute Significantly to the Burden of Antimicrobial Resistance in Uruguay.pdf: 372038 bytes, checksum: 78bdb21af255d80ccbb08b3166840e6d (MD5)Made available in DSpace by Camps Karina (karina.camps@seciu.edu.uy) on 2025-07-10T17:54:55Z (GMT). No. of bitstreams: 2 license_rdf: 24942 bytes, checksum: 58cb336ce230a47d2f88ad02838a665f (MD5) Does Shiga Toxin-Producing Escherichia coli and Listeria monocytogenes Contribute Significantly to the Burden of Antimicrobial Resistance in Uruguay.pdf: 372038 bytes, checksum: 78bdb21af255d80ccbb08b3166840e6d (MD5) Previous issue date: 2020Agencia Nacional de Investigación e Innovación (ANII)application/pdfenengFront. Vet. Sci. 7, 2020Las obras depositadas en el Repositorio se rigen por la Ordenanza de los Derechos de la Propiedad Intelectual de la Universidad de la República.(Res. Nº 91 de C.D.C. de 8/III/1994 – D.O. 7/IV/1994) y por la Ordenanza del Repositorio Abierto de la Universidad de la República (Res. Nº 16 de C.D.C. de 07/10/2014)info:eu-repo/semantics/openAccessLicencia Creative Commons Atribución (CC - By 4.0)Antimicrobial resistanceShiga toxin-producing Escherichia coli (STEC)Listeria monocytogenesZoonotic pathogensResistance genesDoes Shiga Toxin-Producing Escherichia coli and Listeria monocytogenes Contribute Significantly to the Burden of Antimicrobial Resistance in Uruguay?Artículoinfo:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionreponame:COLIBRIinstname:Universidad de la Repúblicainstacron:Universidad de la RepúblicaMota, María InésVázquez, SylviaCornejo, CeciliaD’Alessandro, BrunoBraga, ValeriaCaetano, AnaBetancor, LauraVarela, GustavoLICENSElicense.txtlicense.txttext/plain; charset=utf-84267http://localhost:8080/xmlui/bitstream/20.500.12008/50551/5/license.txt6429389a7df7277b72b7924fdc7d47a9MD55CC-LICENSElicense_urllicense_urltext/plain; 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públicahttps://udelar.edu.uy/https://www.colibri.udelar.edu.uy/oai/requestkarina.camps@seciu.edu.uyUruguayopendoar:47712025-07-10T17:54:55COLIBRI - Universidad de la Repúblicafalse
spellingShingle Does Shiga Toxin-Producing Escherichia coli and Listeria monocytogenes Contribute Significantly to the Burden of Antimicrobial Resistance in Uruguay?
Mota, María Inés
Antimicrobial resistance
Shiga toxin-producing Escherichia coli (STEC)
Listeria monocytogenes
Zoonotic pathogens
Resistance genes
status_str publishedVersion
title Does Shiga Toxin-Producing Escherichia coli and Listeria monocytogenes Contribute Significantly to the Burden of Antimicrobial Resistance in Uruguay?
title_full Does Shiga Toxin-Producing Escherichia coli and Listeria monocytogenes Contribute Significantly to the Burden of Antimicrobial Resistance in Uruguay?
title_fullStr Does Shiga Toxin-Producing Escherichia coli and Listeria monocytogenes Contribute Significantly to the Burden of Antimicrobial Resistance in Uruguay?
title_full_unstemmed Does Shiga Toxin-Producing Escherichia coli and Listeria monocytogenes Contribute Significantly to the Burden of Antimicrobial Resistance in Uruguay?
title_short Does Shiga Toxin-Producing Escherichia coli and Listeria monocytogenes Contribute Significantly to the Burden of Antimicrobial Resistance in Uruguay?
title_sort Does Shiga Toxin-Producing Escherichia coli and Listeria monocytogenes Contribute Significantly to the Burden of Antimicrobial Resistance in Uruguay?
topic Antimicrobial resistance
Shiga toxin-producing Escherichia coli (STEC)
Listeria monocytogenes
Zoonotic pathogens
Resistance genes
url https://hdl.handle.net/20.500.12008/50551