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dc.provenanceINTA-
dc.contributorMartorelli, Luisina-
dc.contributorAlbanese, Adriana A.-
dc.contributorVilte, Daniel Alejandro-
dc.contributorCantet, Ricardo-
dc.contributorBentancort, A.-
dc.contributorZolezzi, G.-
dc.contributorChinen, I.-
dc.contributorIbarra, Cristina E.-
dc.contributorRivas, M.-
dc.contributorMercado, Elsa Cristina-
dc.contributorCataldi, Angel Adrian-
dc.creatorMartorelli, Luisina-
dc.creatorAlbanese, Adriana A.-
dc.creatorVilte, Daniel Alejandro-
dc.creatorCantet, Ricardo-
dc.creatorBentancort, A.-
dc.creatorZolezzi, G.-
dc.creatorChinen, I.-
dc.creatorIbarra, Cristina E.-
dc.creatorRivas, M.-
dc.creatorMercado, Elsa Cristina-
dc.creatorCataldi, Angel Adrian-
dc.date2017-10-13T14:09:43Z-
dc.date2017-10-13T14:09:43Z-
dc.date2017-09-
dc.date.accessioned2019-04-29T16:27:45Z-
dc.date.available2019-04-29T16:27:45Z-
dc.date.issued2017-10-13T14:09:43Z-
dc.date.issued2017-10-13T14:09:43Z-
dc.date.issued2017-09-
dc.identifier0378-1135 (Print)-
dc.identifier1873-2542 (Online)-
dc.identifierhttps://doi.org/10.1016/j.vetmic.2017.06.021-
dc.identifierhttp://hdl.handle.net/20.500.12123/1487-
dc.identifierhttp://www.sciencedirect.com/science/article/pii/S0378113517306466-
dc.identifier.urihttp://rodna.bn.gov.ar:8080/jspui/handle/bnmm/313720-
dc.descriptionProblem addressed: Shiga toxin-producing Escherichia coli (STEC) are a group of bacteria responsible for foodassociated diseases. Clinical features include a wide range of symptoms such as diarrhea, hemorrhagic colitis and the hemolytic uremic syndrome (HUS), a life-threatening condition. Objective: Our group has observed that animals naturally colonized with STEC strains of unknown serotype were not efficiently colonized with E. coli O157:H7 after experimental infection. In order to assess the basis of the interference, three STEC strains were isolated from STEC persistently-colonized healthy cattle from a dairy farm in Buenos Aires, Argentina. Methods and results: The three isolated strains are E. coli O22:H8 and carry the stx1 and stx2d genes. The activatable activity of Stx2d was demonstrated in vitro. The three strains carry the adhesins iha, ehaA and lpfO113. E. coli O22:H8 formed stronger biofilms in abiotic surface than E. coli O157:H7 (eae+, stx2+) and displayed a more adherent phenotype in vitro towards HeLa cells. Furthermore, when both serotypes were cultured together O22:H8 could reduce O157:H7 adherence in vitro. When calves were intragastrically pre-challenged with 108 CFU of a mixture of the three STEC strains and two days later challenged with the same dose of the strain E. coli O157:H7 438/99, the shedding of the pathogen was significantly reduced. Conclusions: These results suggest that E. coli O22:H8, a serotype rarely associated with human illness, might compete with O157:H7 at the bovine recto-anal junction, making non-O157 carrying-calves less susceptible to O157:H7 colonization and shedding of the bacteria to the environment.-
dc.descriptionInst. de Patobiología-
dc.formatapplication/pdf-
dc.languageeng-
dc.rightsinfo:eu-repo/semantics/restrictedAccess-
dc.sourceVeterinary Microbiology 208 : 8-17 (September 2017)-
dc.sourcereponame:INTA Digital (INTA)-
dc.sourceinstname:Instituto Nacional de Tecnología Agropecuaria-
dc.sourceinstacron:INTA-
dc.source.uri0378-1135 (Print)-
dc.source.uri1873-2542 (Online)-
dc.source.urihttps://doi.org/10.1016/j.vetmic.2017.06.021-
dc.source.urihttp://hdl.handle.net/20.500.12123/1487-
dc.source.urihttp://www.sciencedirect.com/science/article/pii/S0378113517306466-
dc.source.urihttps://doi.org/10.1016/j.vetmic.2017.06.021-
dc.source.urihttp://hdl.handle.net/20.500.12123/1487-
dc.source.urihttp://www.sciencedirect.com/science/article/pii/S0378113517306466-
dc.subjectEnfermedades de los Animales-
dc.subjectEscherichia Coli-
dc.subjectGanado Bovino-
dc.subjectExperimentación In Vitro-
dc.subjectExperimentación In Vivo-
dc.subjectAnimal Disesase-
dc.subjectCattle-
dc.subjectIn Vitro Experimentation-
dc.subjectIn Vivo Experimentation-
dc.titleShiga toxin-producing Escherichia coli (STEC) O22:H8 isolated from cattle reduces E. coli O157:H7 adherence in vitro and in vivo-
dc.typeinfo:eu-repo/semantics/article-
dc.typeinfo:eu-repo/semantics/acceptedVersion-
dc.typeinfo:ar-repo/semantics/articulo-
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