The role of glucose in the pathology of EHEC O157: H7
- Autores
- Marques Da Silva, Wanderson; Taibo, Catalina Beatriz; Sabio Y Garcia, Julia Veronica; Larzabal, Mariano; Cataldi, Angel Adrian
- Año de publicación
- 2020
- Idioma
- inglés
- Tipo de recurso
- artículo
- Estado
- versión publicada
- Descripción
- The pathogen enterohemorrhagic Escherichia coli (EHEC) O157: H7 is responsible for hemorrhagic colitis and hemolytic uremic syndrome in humans [1]. During the colonization process in the gastrointestinal tract, EHEC needs to adapt to changes in nutrient availability [2]. The objective of this study was to evaluate the influence of glucose on physiology and processes involved in the pathogenesis of EHEC O157: H7 in order to improve our understanding of the mechanisms controlling EHEC growth and survival in the bovine gut. In this study we first analyzed the growth rate of EHEC O157: H7 Rafaela II clade 8, a strain isolated from a bovine in Argentina, grown in the medium DMEM supplemented with either 4.5% glucose (Highglucose - DHG) or 1% glucose (Low-glucose - DLG). In addition, we assessed the bacterial adhesion capacity and actin pedestal formation induced by EHEC [3] by performing infection assays. For this purpose, Caco-2 epithelial cells were exposed for 5 h with Rafaela II grown with the different concentrations of glucose. Subsequently, the samples were fixed (paraformaldehyde 4%) and permeabilized (triton); actin and nucleic acids (DNA) were stained with rhodamine-phalloidin and TOPRO-3, respectively. Bacterial adhesion capacity and pedestal formation of cells were evaluated using a Leica TCS SP5 laser scanning confocal microscope (MC). Each Image was acquired by monitoring a single focal plane over time (xyt scanning mode) using a 40X/1.25 oil objective lens and 543nm HeNe and 633 nm HeNe lasers. The frequency and resolution for acquiring images were set at 200 Hz and 1,024 x 1,024 pixels, while maintaining the same settings for laser powers, gain, and offset.
Instituto de Biotecnología
Fil: Marques Da Silva, Wanderson. Instituto Nacional de Tecnología Agropecuaria (INTA). Instituto de Agrobiotecnología y Biología Molecular; Argentina
Fil: Marques Da Silva, Wanderson. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina
Fil: Taibo, Catalina Beatriz. Instituto Nacional de Tecnología Agropecuaria (INTA). Centro de Investigación en Ciencias Veterinarias y Agronómicas. Laboratorio Integral de Microscopía; Argentina
Fil: Sabio Y Garcia, Julia Veronica. Instituto Nacional de Tecnología Agropecuaria (INTA). Instituto de Agrobiotecnología y Biología Molecular; Argentina
Fil: Sabio Y Garcia, Julia Veronica. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina
Fil: Sabio Y Garcia, Julia Veronica. Instituto Nacional de Tecnología Agropecuaria (INTA). Centro de Investigación en Ciencias Veterinarias y Agronómicas. Laboratorio Integral de Microscopía; Argentina
Fil: Larzabal, Mariano. Instituto Nacional de Tecnología Agropecuaria (INTA). Instituto de Agrobiotecnología y Biología Molecular; Argentina
Fil: Larzabal, Mariano. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina
Fil: Cataldi, Angel Adrian. Instituto Nacional de Tecnología Agropecuaria (INTA). Instituto de Agrobiotecnología y Biología Molecular; Argentina
Fil: Cataldi, Angel Adrian. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina - Fuente
- Microscopy and Microanalysis 26 (Suppl 1) : 181-182 (Abril 2020)
- Materia
-
Glucose
Pathogens
Pathogenesis
Glucosa
Organismos Patógenos
Escherichia coli
Patogénesis - Nivel de accesibilidad
- acceso abierto
- Condiciones de uso
- http://creativecommons.org/licenses/by-nc-sa/4.0/
- Repositorio
- Institución
- Instituto Nacional de Tecnología Agropecuaria
- OAI Identificador
- oai:localhost:20.500.12123/10224
Ver los metadatos del registro completo
id |
INTADig_9c718be793b838620075251fb9f7ea81 |
---|---|
oai_identifier_str |
oai:localhost:20.500.12123/10224 |
network_acronym_str |
INTADig |
repository_id_str |
l |
network_name_str |
INTA Digital (INTA) |
spelling |
The role of glucose in the pathology of EHEC O157: H7Marques Da Silva, WandersonTaibo, Catalina BeatrizSabio Y Garcia, Julia VeronicaLarzabal, MarianoCataldi, Angel AdrianGlucosePathogensPathogenesisGlucosaOrganismos PatógenosEscherichia coliPatogénesisThe pathogen enterohemorrhagic Escherichia coli (EHEC) O157: H7 is responsible for hemorrhagic colitis and hemolytic uremic syndrome in humans [1]. During the colonization process in the gastrointestinal tract, EHEC needs to adapt to changes in nutrient availability [2]. The objective of this study was to evaluate the influence of glucose on physiology and processes involved in the pathogenesis of EHEC O157: H7 in order to improve our understanding of the mechanisms controlling EHEC growth and survival in the bovine gut. In this study we first analyzed the growth rate of EHEC O157: H7 Rafaela II clade 8, a strain isolated from a bovine in Argentina, grown in the medium DMEM supplemented with either 4.5% glucose (Highglucose - DHG) or 1% glucose (Low-glucose - DLG). In addition, we assessed the bacterial adhesion capacity and actin pedestal formation induced by EHEC [3] by performing infection assays. For this purpose, Caco-2 epithelial cells were exposed for 5 h with Rafaela II grown with the different concentrations of glucose. Subsequently, the samples were fixed (paraformaldehyde 4%) and permeabilized (triton); actin and nucleic acids (DNA) were stained with rhodamine-phalloidin and TOPRO-3, respectively. Bacterial adhesion capacity and pedestal formation of cells were evaluated using a Leica TCS SP5 laser scanning confocal microscope (MC). Each Image was acquired by monitoring a single focal plane over time (xyt scanning mode) using a 40X/1.25 oil objective lens and 543nm HeNe and 633 nm HeNe lasers. The frequency and resolution for acquiring images were set at 200 Hz and 1,024 x 1,024 pixels, while maintaining the same settings for laser powers, gain, and offset.Instituto de BiotecnologíaFil: Marques Da Silva, Wanderson. Instituto Nacional de Tecnología Agropecuaria (INTA). Instituto de Agrobiotecnología y Biología Molecular; ArgentinaFil: Marques Da Silva, Wanderson. Consejo Nacional de Investigaciones Científicas y Técnicas; ArgentinaFil: Taibo, Catalina Beatriz. Instituto Nacional de Tecnología Agropecuaria (INTA). Centro de Investigación en Ciencias Veterinarias y Agronómicas. Laboratorio Integral de Microscopía; ArgentinaFil: Sabio Y Garcia, Julia Veronica. Instituto Nacional de Tecnología Agropecuaria (INTA). Instituto de Agrobiotecnología y Biología Molecular; ArgentinaFil: Sabio Y Garcia, Julia Veronica. Consejo Nacional de Investigaciones Científicas y Técnicas; ArgentinaFil: Sabio Y Garcia, Julia Veronica. Instituto Nacional de Tecnología Agropecuaria (INTA). Centro de Investigación en Ciencias Veterinarias y Agronómicas. Laboratorio Integral de Microscopía; ArgentinaFil: Larzabal, Mariano. Instituto Nacional de Tecnología Agropecuaria (INTA). Instituto de Agrobiotecnología y Biología Molecular; ArgentinaFil: Larzabal, Mariano. Consejo Nacional de Investigaciones Científicas y Técnicas; ArgentinaFil: Cataldi, Angel Adrian. Instituto Nacional de Tecnología Agropecuaria (INTA). Instituto de Agrobiotecnología y Biología Molecular; ArgentinaFil: Cataldi, Angel Adrian. Consejo Nacional de Investigaciones Científicas y Técnicas; ArgentinaCambridge University Press2021-09-10T12:12:36Z2021-09-10T12:12:36Z2020-04info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfhttp://hdl.handle.net/20.500.12123/10224https://www.cambridge.org/core/journals/microscopy-and-microanalysis/article/role-of-glucose-in-the-pathology-of-ehec-o157-h7/4F5327F46D17EE9933438979E0134B281431-9276https://doi.org/10.1017/S1431927620001129Microscopy and Microanalysis 26 (Suppl 1) : 181-182 (Abril 2020)reponame:INTA Digital (INTA)instname:Instituto Nacional de Tecnología Agropecuariaenginfo:eu-repo/semantics/openAccesshttp://creativecommons.org/licenses/by-nc-sa/4.0/Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International (CC BY-NC-SA 4.0)2025-09-29T13:45:20Zoai:localhost:20.500.12123/10224instacron:INTAInstitucionalhttp://repositorio.inta.gob.ar/Organismo científico-tecnológicoNo correspondehttp://repositorio.inta.gob.ar/oai/requesttripaldi.nicolas@inta.gob.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:l2025-09-29 13:45:20.824INTA Digital (INTA) - Instituto Nacional de Tecnología Agropecuariafalse |
dc.title.none.fl_str_mv |
The role of glucose in the pathology of EHEC O157: H7 |
title |
The role of glucose in the pathology of EHEC O157: H7 |
spellingShingle |
The role of glucose in the pathology of EHEC O157: H7 Marques Da Silva, Wanderson Glucose Pathogens Pathogenesis Glucosa Organismos Patógenos Escherichia coli Patogénesis |
title_short |
The role of glucose in the pathology of EHEC O157: H7 |
title_full |
The role of glucose in the pathology of EHEC O157: H7 |
title_fullStr |
The role of glucose in the pathology of EHEC O157: H7 |
title_full_unstemmed |
The role of glucose in the pathology of EHEC O157: H7 |
title_sort |
The role of glucose in the pathology of EHEC O157: H7 |
dc.creator.none.fl_str_mv |
Marques Da Silva, Wanderson Taibo, Catalina Beatriz Sabio Y Garcia, Julia Veronica Larzabal, Mariano Cataldi, Angel Adrian |
author |
Marques Da Silva, Wanderson |
author_facet |
Marques Da Silva, Wanderson Taibo, Catalina Beatriz Sabio Y Garcia, Julia Veronica Larzabal, Mariano Cataldi, Angel Adrian |
author_role |
author |
author2 |
Taibo, Catalina Beatriz Sabio Y Garcia, Julia Veronica Larzabal, Mariano Cataldi, Angel Adrian |
author2_role |
author author author author |
dc.subject.none.fl_str_mv |
Glucose Pathogens Pathogenesis Glucosa Organismos Patógenos Escherichia coli Patogénesis |
topic |
Glucose Pathogens Pathogenesis Glucosa Organismos Patógenos Escherichia coli Patogénesis |
dc.description.none.fl_txt_mv |
The pathogen enterohemorrhagic Escherichia coli (EHEC) O157: H7 is responsible for hemorrhagic colitis and hemolytic uremic syndrome in humans [1]. During the colonization process in the gastrointestinal tract, EHEC needs to adapt to changes in nutrient availability [2]. The objective of this study was to evaluate the influence of glucose on physiology and processes involved in the pathogenesis of EHEC O157: H7 in order to improve our understanding of the mechanisms controlling EHEC growth and survival in the bovine gut. In this study we first analyzed the growth rate of EHEC O157: H7 Rafaela II clade 8, a strain isolated from a bovine in Argentina, grown in the medium DMEM supplemented with either 4.5% glucose (Highglucose - DHG) or 1% glucose (Low-glucose - DLG). In addition, we assessed the bacterial adhesion capacity and actin pedestal formation induced by EHEC [3] by performing infection assays. For this purpose, Caco-2 epithelial cells were exposed for 5 h with Rafaela II grown with the different concentrations of glucose. Subsequently, the samples were fixed (paraformaldehyde 4%) and permeabilized (triton); actin and nucleic acids (DNA) were stained with rhodamine-phalloidin and TOPRO-3, respectively. Bacterial adhesion capacity and pedestal formation of cells were evaluated using a Leica TCS SP5 laser scanning confocal microscope (MC). Each Image was acquired by monitoring a single focal plane over time (xyt scanning mode) using a 40X/1.25 oil objective lens and 543nm HeNe and 633 nm HeNe lasers. The frequency and resolution for acquiring images were set at 200 Hz and 1,024 x 1,024 pixels, while maintaining the same settings for laser powers, gain, and offset. Instituto de Biotecnología Fil: Marques Da Silva, Wanderson. Instituto Nacional de Tecnología Agropecuaria (INTA). Instituto de Agrobiotecnología y Biología Molecular; Argentina Fil: Marques Da Silva, Wanderson. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina Fil: Taibo, Catalina Beatriz. Instituto Nacional de Tecnología Agropecuaria (INTA). Centro de Investigación en Ciencias Veterinarias y Agronómicas. Laboratorio Integral de Microscopía; Argentina Fil: Sabio Y Garcia, Julia Veronica. Instituto Nacional de Tecnología Agropecuaria (INTA). Instituto de Agrobiotecnología y Biología Molecular; Argentina Fil: Sabio Y Garcia, Julia Veronica. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina Fil: Sabio Y Garcia, Julia Veronica. Instituto Nacional de Tecnología Agropecuaria (INTA). Centro de Investigación en Ciencias Veterinarias y Agronómicas. Laboratorio Integral de Microscopía; Argentina Fil: Larzabal, Mariano. Instituto Nacional de Tecnología Agropecuaria (INTA). Instituto de Agrobiotecnología y Biología Molecular; Argentina Fil: Larzabal, Mariano. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina Fil: Cataldi, Angel Adrian. Instituto Nacional de Tecnología Agropecuaria (INTA). Instituto de Agrobiotecnología y Biología Molecular; Argentina Fil: Cataldi, Angel Adrian. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina |
description |
The pathogen enterohemorrhagic Escherichia coli (EHEC) O157: H7 is responsible for hemorrhagic colitis and hemolytic uremic syndrome in humans [1]. During the colonization process in the gastrointestinal tract, EHEC needs to adapt to changes in nutrient availability [2]. The objective of this study was to evaluate the influence of glucose on physiology and processes involved in the pathogenesis of EHEC O157: H7 in order to improve our understanding of the mechanisms controlling EHEC growth and survival in the bovine gut. In this study we first analyzed the growth rate of EHEC O157: H7 Rafaela II clade 8, a strain isolated from a bovine in Argentina, grown in the medium DMEM supplemented with either 4.5% glucose (Highglucose - DHG) or 1% glucose (Low-glucose - DLG). In addition, we assessed the bacterial adhesion capacity and actin pedestal formation induced by EHEC [3] by performing infection assays. For this purpose, Caco-2 epithelial cells were exposed for 5 h with Rafaela II grown with the different concentrations of glucose. Subsequently, the samples were fixed (paraformaldehyde 4%) and permeabilized (triton); actin and nucleic acids (DNA) were stained with rhodamine-phalloidin and TOPRO-3, respectively. Bacterial adhesion capacity and pedestal formation of cells were evaluated using a Leica TCS SP5 laser scanning confocal microscope (MC). Each Image was acquired by monitoring a single focal plane over time (xyt scanning mode) using a 40X/1.25 oil objective lens and 543nm HeNe and 633 nm HeNe lasers. The frequency and resolution for acquiring images were set at 200 Hz and 1,024 x 1,024 pixels, while maintaining the same settings for laser powers, gain, and offset. |
publishDate |
2020 |
dc.date.none.fl_str_mv |
2020-04 2021-09-10T12:12:36Z 2021-09-10T12:12:36Z |
dc.type.none.fl_str_mv |
info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion http://purl.org/coar/resource_type/c_6501 info:ar-repo/semantics/articulo |
format |
article |
status_str |
publishedVersion |
dc.identifier.none.fl_str_mv |
http://hdl.handle.net/20.500.12123/10224 https://www.cambridge.org/core/journals/microscopy-and-microanalysis/article/role-of-glucose-in-the-pathology-of-ehec-o157-h7/4F5327F46D17EE9933438979E0134B28 1431-9276 https://doi.org/10.1017/S1431927620001129 |
url |
http://hdl.handle.net/20.500.12123/10224 https://www.cambridge.org/core/journals/microscopy-and-microanalysis/article/role-of-glucose-in-the-pathology-of-ehec-o157-h7/4F5327F46D17EE9933438979E0134B28 https://doi.org/10.1017/S1431927620001129 |
identifier_str_mv |
1431-9276 |
dc.language.none.fl_str_mv |
eng |
language |
eng |
dc.rights.none.fl_str_mv |
info:eu-repo/semantics/openAccess http://creativecommons.org/licenses/by-nc-sa/4.0/ Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International (CC BY-NC-SA 4.0) |
eu_rights_str_mv |
openAccess |
rights_invalid_str_mv |
http://creativecommons.org/licenses/by-nc-sa/4.0/ Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International (CC BY-NC-SA 4.0) |
dc.format.none.fl_str_mv |
application/pdf |
dc.publisher.none.fl_str_mv |
Cambridge University Press |
publisher.none.fl_str_mv |
Cambridge University Press |
dc.source.none.fl_str_mv |
Microscopy and Microanalysis 26 (Suppl 1) : 181-182 (Abril 2020) reponame:INTA Digital (INTA) instname:Instituto Nacional de Tecnología Agropecuaria |
reponame_str |
INTA Digital (INTA) |
collection |
INTA Digital (INTA) |
instname_str |
Instituto Nacional de Tecnología Agropecuaria |
repository.name.fl_str_mv |
INTA Digital (INTA) - Instituto Nacional de Tecnología Agropecuaria |
repository.mail.fl_str_mv |
tripaldi.nicolas@inta.gob.ar |
_version_ |
1844619157722628096 |
score |
12.559606 |