Neuroprotective effects of hypothermia on synaptic actin cytoskeletal changes induced by perinatal asphyxia

Autores
Muñiz, Javier Andrés; Romero, Juan Ignacio; Holubiec, Mariana Ines; Barreto, George; Gonzalez Santos, Janneth; Saint Martin, Madeleine; Blanco, Eduardo; Cavicchia, Juan Carlos; Castilla, Rocio Soledad; Capani, Francisco
Año de publicación
2014
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
Cerebral hypoxia–ischemia damages synaptic proteins, resulting in cytoskeletal alterations, protein aggregation and neuronal death. In the previous works, we have shown neuronal and synaptic changes in rat neostriatum subjected to hypoxia that leads to ubi-protein accumulation. Recently, we also showed that, changes in F-actin organization could be related to early alterations induced by hypoxia in the Central Nervous System. However, little is known about effective treatment to diminish the damage. The main aim of this work is to study the effects of birth hypothermia on the actin cytoskeleton of neostriatal post-synaptic densities (PSD) in 60 days olds rats by immunohistochemistry, photooxidation and western blot. We used 2 different protocols of hypothermia: (a) intrahypoxic hypothermia at 15 °C and (b) post-hypoxia hypothermia at 32 °C. Consistent with previous data at 30 days, staining with phalloidin–Alexa488 followed by confocal microscopy analysis showed an increase of F-actin fluorescent staining in the neostriatum of hypoxic animals. Correlative photooxidation electron microscopy confirmed these observations showing an increment in the number of mushroom-shaped F-actin staining spines in neostriatal excitatory synapses in rats subjected to hypoxia. In addition, western blot revealed β-actin increase in PSDs in hypoxic animals. The optic relative density measurement showed a significant difference between controls and hypoxic animals. When hypoxia was induced under hypothermic conditions, the changes observed in actin cytoskeleton were blocked. Post-hypoxic hypothermia showed similar answer but actin cytoskeleton modifications were not totally reverted as we observed at 15 °C. These data suggest that the decrease of the body temperature decreases the actin modifications in dendritic spines preventing the neuronal death.
Fil: Muñiz, Javier Andrés. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Houssay. Instituto de Investigaciones Cardiológicas. Universidad de Buenos Aires. Facultad de Medicina. Instituto de Investigaciones Cardiológicas; Argentina
Fil: Romero, Juan Ignacio. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Houssay. Instituto de Investigaciones Cardiológicas. Universidad de Buenos Aires. Facultad de Medicina. Instituto de Investigaciones Cardiológicas; Argentina
Fil: Holubiec, Mariana Ines. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Houssay. Instituto de Investigaciones Cardiológicas. Universidad de Buenos Aires. Facultad de Medicina. Instituto de Investigaciones Cardiológicas; Argentina
Fil: Barreto, George. Pontificia Universidad Javeriana; Colombia
Fil: Gonzalez Santos, Janneth. Pontificia Universidad Javeriana; Colombia
Fil: Saint Martin, Madeleine. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Houssay. Instituto de Investigaciones Cardiológicas. Universidad de Buenos Aires. Facultad de Medicina. Instituto de Investigaciones Cardiológicas; Argentina
Fil: Blanco, Eduardo. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Houssay. Instituto de Investigaciones Cardiológicas. Universidad de Buenos Aires. Facultad de Medicina. Instituto de Investigaciones Cardiológicas; Argentina. Universidad de Málaga; España
Fil: Cavicchia, Juan Carlos. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Mendoza. Instituto de Histología y Embriología de Mendoza Dr. Mario H. Burgos. Universidad Nacional de Cuyo. Facultad de Cienicas Médicas. Instituto de Histología y Embriología de Mendoza Dr. Mario H. Burgos; Argentina
Fil: Castilla, Rocio Soledad. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Houssay. Instituto de Investigaciones Cardiológicas. Universidad de Buenos Aires. Facultad de Medicina. Instituto de Investigaciones Cardiológicas; Argentina
Fil: Capani, Francisco. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Houssay. Instituto de Investigaciones Cardiológicas. Universidad de Buenos Aires. Facultad de Medicina. Instituto de Investigaciones Cardiológicas; Argentina. Universidad Argentina "John F. Kennedy"; Argentina
Materia
Neostriatum
Perinatal Asphyxia
Neuroprotection
Hypothermia
Actin Cytoskeleton
Nivel de accesibilidad
acceso abierto
Condiciones de uso
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
Repositorio
CONICET Digital (CONICET)
Institución
Consejo Nacional de Investigaciones Científicas y Técnicas
OAI Identificador
oai:ri.conicet.gov.ar:11336/46983
Acceder
id CONICETDig_ba83cfcf7d80303336220c71f4929675
oai_identifier_str oai:ri.conicet.gov.ar:11336/46983
network_acronym_str CONICETDig
repository_id_str 3498
network_name_str CONICET Digital (CONICET)
spelling Neuroprotective effects of hypothermia on synaptic actin cytoskeletal changes induced by perinatal asphyxiaMuñiz, Javier AndrésRomero, Juan IgnacioHolubiec, Mariana InesBarreto, GeorgeGonzalez Santos, JannethSaint Martin, MadeleineBlanco, EduardoCavicchia, Juan CarlosCastilla, Rocio SoledadCapani, FranciscoNeostriatumPerinatal AsphyxiaNeuroprotectionHypothermiaActin Cytoskeletonhttps://purl.org/becyt/ford/3.1https://purl.org/becyt/ford/3Cerebral hypoxia–ischemia damages synaptic proteins, resulting in cytoskeletal alterations, protein aggregation and neuronal death. In the previous works, we have shown neuronal and synaptic changes in rat neostriatum subjected to hypoxia that leads to ubi-protein accumulation. Recently, we also showed that, changes in F-actin organization could be related to early alterations induced by hypoxia in the Central Nervous System. However, little is known about effective treatment to diminish the damage. The main aim of this work is to study the effects of birth hypothermia on the actin cytoskeleton of neostriatal post-synaptic densities (PSD) in 60 days olds rats by immunohistochemistry, photooxidation and western blot. We used 2 different protocols of hypothermia: (a) intrahypoxic hypothermia at 15 °C and (b) post-hypoxia hypothermia at 32 °C. Consistent with previous data at 30 days, staining with phalloidin–Alexa488 followed by confocal microscopy analysis showed an increase of F-actin fluorescent staining in the neostriatum of hypoxic animals. Correlative photooxidation electron microscopy confirmed these observations showing an increment in the number of mushroom-shaped F-actin staining spines in neostriatal excitatory synapses in rats subjected to hypoxia. In addition, western blot revealed β-actin increase in PSDs in hypoxic animals. The optic relative density measurement showed a significant difference between controls and hypoxic animals. When hypoxia was induced under hypothermic conditions, the changes observed in actin cytoskeleton were blocked. Post-hypoxic hypothermia showed similar answer but actin cytoskeleton modifications were not totally reverted as we observed at 15 °C. These data suggest that the decrease of the body temperature decreases the actin modifications in dendritic spines preventing the neuronal death.Fil: Muñiz, Javier Andrés. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Houssay. Instituto de Investigaciones Cardiológicas. Universidad de Buenos Aires. Facultad de Medicina. Instituto de Investigaciones Cardiológicas; ArgentinaFil: Romero, Juan Ignacio. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Houssay. Instituto de Investigaciones Cardiológicas. Universidad de Buenos Aires. Facultad de Medicina. Instituto de Investigaciones Cardiológicas; ArgentinaFil: Holubiec, Mariana Ines. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Houssay. Instituto de Investigaciones Cardiológicas. Universidad de Buenos Aires. Facultad de Medicina. Instituto de Investigaciones Cardiológicas; ArgentinaFil: Barreto, George. Pontificia Universidad Javeriana; ColombiaFil: Gonzalez Santos, Janneth. Pontificia Universidad Javeriana; ColombiaFil: Saint Martin, Madeleine. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Houssay. Instituto de Investigaciones Cardiológicas. Universidad de Buenos Aires. Facultad de Medicina. Instituto de Investigaciones Cardiológicas; ArgentinaFil: Blanco, Eduardo. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Houssay. Instituto de Investigaciones Cardiológicas. Universidad de Buenos Aires. Facultad de Medicina. Instituto de Investigaciones Cardiológicas; Argentina. Universidad de Málaga; EspañaFil: Cavicchia, Juan Carlos. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Mendoza. Instituto de Histología y Embriología de Mendoza Dr. Mario H. Burgos. Universidad Nacional de Cuyo. Facultad de Cienicas Médicas. Instituto de Histología y Embriología de Mendoza Dr. Mario H. Burgos; ArgentinaFil: Castilla, Rocio Soledad. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Houssay. Instituto de Investigaciones Cardiológicas. Universidad de Buenos Aires. Facultad de Medicina. Instituto de Investigaciones Cardiológicas; ArgentinaFil: Capani, Francisco. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Houssay. Instituto de Investigaciones Cardiológicas. Universidad de Buenos Aires. Facultad de Medicina. Instituto de Investigaciones Cardiológicas; Argentina. Universidad Argentina "John F. Kennedy"; ArgentinaElsevier Science2014-05info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfapplication/pdfapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/46983Muñiz, Javier Andrés; Romero, Juan Ignacio; Holubiec, Mariana Ines; Barreto, George; Gonzalez Santos, Janneth; et al.; Neuroprotective effects of hypothermia on synaptic actin cytoskeletal changes induced by perinatal asphyxia; Elsevier Science; Brain Research; 1563; 5-2014; 81-900006-8993CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/doi/10.1016/j.brainres.2014.03.023info:eu-repo/semantics/altIdentifier/url/https://www.sciencedirect.com/science/article/pii/S0006899314003710info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-09-29T09:40:10Zoai:ri.conicet.gov.ar:11336/46983instacron:CONICETInstitucionalhttp://ri.conicet.gov.ar/Organismo científico-tecnológicoNo correspondehttp://ri.conicet.gov.ar/oai/requestdasensio@conicet.gov.ar; lcarlino@conicet.gov.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:34982025-09-29 09:40:10.876CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv Neuroprotective effects of hypothermia on synaptic actin cytoskeletal changes induced by perinatal asphyxia
title Neuroprotective effects of hypothermia on synaptic actin cytoskeletal changes induced by perinatal asphyxia
spellingShingle Neuroprotective effects of hypothermia on synaptic actin cytoskeletal changes induced by perinatal asphyxia
Muñiz, Javier Andrés
Neostriatum
Perinatal Asphyxia
Neuroprotection
Hypothermia
Actin Cytoskeleton
title_short Neuroprotective effects of hypothermia on synaptic actin cytoskeletal changes induced by perinatal asphyxia
title_full Neuroprotective effects of hypothermia on synaptic actin cytoskeletal changes induced by perinatal asphyxia
title_fullStr Neuroprotective effects of hypothermia on synaptic actin cytoskeletal changes induced by perinatal asphyxia
title_full_unstemmed Neuroprotective effects of hypothermia on synaptic actin cytoskeletal changes induced by perinatal asphyxia
title_sort Neuroprotective effects of hypothermia on synaptic actin cytoskeletal changes induced by perinatal asphyxia
dc.creator.none.fl_str_mv Muñiz, Javier Andrés
Romero, Juan Ignacio
Holubiec, Mariana Ines
Barreto, George
Gonzalez Santos, Janneth
Saint Martin, Madeleine
Blanco, Eduardo
Cavicchia, Juan Carlos
Castilla, Rocio Soledad
Capani, Francisco
author Muñiz, Javier Andrés
author_facet Muñiz, Javier Andrés
Romero, Juan Ignacio
Holubiec, Mariana Ines
Barreto, George
Gonzalez Santos, Janneth
Saint Martin, Madeleine
Blanco, Eduardo
Cavicchia, Juan Carlos
Castilla, Rocio Soledad
Capani, Francisco
author_role author
author2 Romero, Juan Ignacio
Holubiec, Mariana Ines
Barreto, George
Gonzalez Santos, Janneth
Saint Martin, Madeleine
Blanco, Eduardo
Cavicchia, Juan Carlos
Castilla, Rocio Soledad
Capani, Francisco
author2_role author
author
author
author
author
author
author
author
author
dc.subject.none.fl_str_mv Neostriatum
Perinatal Asphyxia
Neuroprotection
Hypothermia
Actin Cytoskeleton
topic Neostriatum
Perinatal Asphyxia
Neuroprotection
Hypothermia
Actin Cytoskeleton
purl_subject.fl_str_mv https://purl.org/becyt/ford/3.1
https://purl.org/becyt/ford/3
dc.description.none.fl_txt_mv Cerebral hypoxia–ischemia damages synaptic proteins, resulting in cytoskeletal alterations, protein aggregation and neuronal death. In the previous works, we have shown neuronal and synaptic changes in rat neostriatum subjected to hypoxia that leads to ubi-protein accumulation. Recently, we also showed that, changes in F-actin organization could be related to early alterations induced by hypoxia in the Central Nervous System. However, little is known about effective treatment to diminish the damage. The main aim of this work is to study the effects of birth hypothermia on the actin cytoskeleton of neostriatal post-synaptic densities (PSD) in 60 days olds rats by immunohistochemistry, photooxidation and western blot. We used 2 different protocols of hypothermia: (a) intrahypoxic hypothermia at 15 °C and (b) post-hypoxia hypothermia at 32 °C. Consistent with previous data at 30 days, staining with phalloidin–Alexa488 followed by confocal microscopy analysis showed an increase of F-actin fluorescent staining in the neostriatum of hypoxic animals. Correlative photooxidation electron microscopy confirmed these observations showing an increment in the number of mushroom-shaped F-actin staining spines in neostriatal excitatory synapses in rats subjected to hypoxia. In addition, western blot revealed β-actin increase in PSDs in hypoxic animals. The optic relative density measurement showed a significant difference between controls and hypoxic animals. When hypoxia was induced under hypothermic conditions, the changes observed in actin cytoskeleton were blocked. Post-hypoxic hypothermia showed similar answer but actin cytoskeleton modifications were not totally reverted as we observed at 15 °C. These data suggest that the decrease of the body temperature decreases the actin modifications in dendritic spines preventing the neuronal death.
Fil: Muñiz, Javier Andrés. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Houssay. Instituto de Investigaciones Cardiológicas. Universidad de Buenos Aires. Facultad de Medicina. Instituto de Investigaciones Cardiológicas; Argentina
Fil: Romero, Juan Ignacio. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Houssay. Instituto de Investigaciones Cardiológicas. Universidad de Buenos Aires. Facultad de Medicina. Instituto de Investigaciones Cardiológicas; Argentina
Fil: Holubiec, Mariana Ines. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Houssay. Instituto de Investigaciones Cardiológicas. Universidad de Buenos Aires. Facultad de Medicina. Instituto de Investigaciones Cardiológicas; Argentina
Fil: Barreto, George. Pontificia Universidad Javeriana; Colombia
Fil: Gonzalez Santos, Janneth. Pontificia Universidad Javeriana; Colombia
Fil: Saint Martin, Madeleine. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Houssay. Instituto de Investigaciones Cardiológicas. Universidad de Buenos Aires. Facultad de Medicina. Instituto de Investigaciones Cardiológicas; Argentina
Fil: Blanco, Eduardo. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Houssay. Instituto de Investigaciones Cardiológicas. Universidad de Buenos Aires. Facultad de Medicina. Instituto de Investigaciones Cardiológicas; Argentina. Universidad de Málaga; España
Fil: Cavicchia, Juan Carlos. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Mendoza. Instituto de Histología y Embriología de Mendoza Dr. Mario H. Burgos. Universidad Nacional de Cuyo. Facultad de Cienicas Médicas. Instituto de Histología y Embriología de Mendoza Dr. Mario H. Burgos; Argentina
Fil: Castilla, Rocio Soledad. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Houssay. Instituto de Investigaciones Cardiológicas. Universidad de Buenos Aires. Facultad de Medicina. Instituto de Investigaciones Cardiológicas; Argentina
Fil: Capani, Francisco. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Houssay. Instituto de Investigaciones Cardiológicas. Universidad de Buenos Aires. Facultad de Medicina. Instituto de Investigaciones Cardiológicas; Argentina. Universidad Argentina "John F. Kennedy"; Argentina
description Cerebral hypoxia–ischemia damages synaptic proteins, resulting in cytoskeletal alterations, protein aggregation and neuronal death. In the previous works, we have shown neuronal and synaptic changes in rat neostriatum subjected to hypoxia that leads to ubi-protein accumulation. Recently, we also showed that, changes in F-actin organization could be related to early alterations induced by hypoxia in the Central Nervous System. However, little is known about effective treatment to diminish the damage. The main aim of this work is to study the effects of birth hypothermia on the actin cytoskeleton of neostriatal post-synaptic densities (PSD) in 60 days olds rats by immunohistochemistry, photooxidation and western blot. We used 2 different protocols of hypothermia: (a) intrahypoxic hypothermia at 15 °C and (b) post-hypoxia hypothermia at 32 °C. Consistent with previous data at 30 days, staining with phalloidin–Alexa488 followed by confocal microscopy analysis showed an increase of F-actin fluorescent staining in the neostriatum of hypoxic animals. Correlative photooxidation electron microscopy confirmed these observations showing an increment in the number of mushroom-shaped F-actin staining spines in neostriatal excitatory synapses in rats subjected to hypoxia. In addition, western blot revealed β-actin increase in PSDs in hypoxic animals. The optic relative density measurement showed a significant difference between controls and hypoxic animals. When hypoxia was induced under hypothermic conditions, the changes observed in actin cytoskeleton were blocked. Post-hypoxic hypothermia showed similar answer but actin cytoskeleton modifications were not totally reverted as we observed at 15 °C. These data suggest that the decrease of the body temperature decreases the actin modifications in dendritic spines preventing the neuronal death.
publishDate 2014
dc.date.none.fl_str_mv 2014-05
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/11336/46983
Muñiz, Javier Andrés; Romero, Juan Ignacio; Holubiec, Mariana Ines; Barreto, George; Gonzalez Santos, Janneth; et al.; Neuroprotective effects of hypothermia on synaptic actin cytoskeletal changes induced by perinatal asphyxia; Elsevier Science; Brain Research; 1563; 5-2014; 81-90
0006-8993
CONICET Digital
CONICET
url http://hdl.handle.net/11336/46983
identifier_str_mv Muñiz, Javier Andrés; Romero, Juan Ignacio; Holubiec, Mariana Ines; Barreto, George; Gonzalez Santos, Janneth; et al.; Neuroprotective effects of hypothermia on synaptic actin cytoskeletal changes induced by perinatal asphyxia; Elsevier Science; Brain Research; 1563; 5-2014; 81-90
0006-8993
CONICET Digital
CONICET
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/doi/10.1016/j.brainres.2014.03.023
info:eu-repo/semantics/altIdentifier/url/https://www.sciencedirect.com/science/article/pii/S0006899314003710
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
eu_rights_str_mv openAccess
rights_invalid_str_mv https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.format.none.fl_str_mv application/pdf
application/pdf
application/pdf
application/pdf
application/pdf
dc.publisher.none.fl_str_mv Elsevier Science
publisher.none.fl_str_mv Elsevier Science
dc.source.none.fl_str_mv reponame:CONICET Digital (CONICET)
instname:Consejo Nacional de Investigaciones Científicas y Técnicas
reponame_str CONICET Digital (CONICET)
collection CONICET Digital (CONICET)
instname_str Consejo Nacional de Investigaciones Científicas y Técnicas
repository.name.fl_str_mv CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicas
repository.mail.fl_str_mv dasensio@conicet.gov.ar; lcarlino@conicet.gov.ar
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