Oxidative stress damage circumscribed to the central temporal retinal pigment epithelium in early experimental non-exudative age-related macular degeneration
- Autores
- Dieguez, Hernán H.; Romeo, Horacio; Alaimo, Agustina; González Fleitas, María F.; Aranda, Marcos L.; Rosenstein, Ruth E.; Dorfman, Damián
- Año de publicación
- 2019
- Idioma
- inglés
- Tipo de recurso
- artículo
- Estado
- versión aceptada
- Descripción
- Fil: Dieguez, Hernán H. Universidad de Buenos Aires. Facultad de Medicina. Departamento de Bioquímica Humana. Laboratorio de Neuroquímica Retinal y Oftamología Experimental; Argentina
Fil: Dieguez, Hernán H. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro de Estudios Farmacológicos y Botánicos; Argentina
Fil: Romeo, Horacio. Pontificia Universidad Católica Argentina. Facultad de Ciencias Médicas. Instituto de Investigaciones Biomédicas; Argentina
Fil: Romeo, Horacio. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina
Fil: Alaimo, Agustina. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Departamento de Química Biológica. Instituto de Química Biológica de la Facultad de Ciencias Exactas y Naturales. Laboratorio Interdisciplinario de Dinámica Celular y Nanoherramientas; Argentina
Fil: Alaimo, Agustina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina
Fil: González Fleitas, María F. Universidad de Buenos Aires. Facultad de Medicina. Departamento de Bioquímica Humana. Laboratorio de Neuroquímica Retinal y Oftamología Experimental; Argentina
Fil: González Fleitas, María F. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro de Estudios Farmacológicos y Botánicos; Argentina
Fil: Aranda, Marcos L. Universidad de Buenos Aires. Facultad de Medicina. Departamento de Bioquímica Humana. Laboratorio de Neuroquímica Retinal y Oftamología Experimental; Argentina
Fil: Aranda, Marcos L. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro de Estudios Farmacológicos y Botánicos; Argentina
Fil: Rosenstein, Ruth E. Universidad de Buenos Aires. Facultad de Medicina. Departamento de Bioquímica Humana. Laboratorio de Neuroquímica Retinal y Oftamología Experimental; Argentina
Fil: Rosenstein, Ruth E. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro de Estudios Farmacológicos y Botánicos; Argentina
Fil: Dorfman, Damián. Universidad de Buenos Aires. Facultad de Medicina. Departamento de Bioquímica Humana. Laboratorio de Neuroquímica Retinal y Oftamología Experimental; Argentina
Fil: Dorfman, Damián. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro de Estudios Farmacológicos y Botánicos; Argentina
Abstract: Non-exudative age-related macular degeneration (NE-AMD) represents the leading cause of blindness in the elderly. The macular retinal pigment epithelium (RPE) lies in a high oxidative environment because its high metabolic demand, mitochondria concentration, reactive oxygen species levels, and macular blood flow. It has been suggested that oxidative stress-induced damage to the RPE plays a key role in NE-AMD pathogenesis. The fact that the disease limits to the macular region raises the question as to why this area is particularly susceptible. We have developed a NE-AMD model induced by superior cervical ganglionectomy (SCGx) in C57BL/6J mice, which reproduces the disease hallmarks exclusively circumscribed to the temporal region of the RPE/outer retina. The aim of this work was analyzing RPE regional differences that could explain AMD localized susceptibility. Lower melanin content, thicker basal infoldings, higher mitochondrial mass, and higher levels of antioxidant enzymes, were found in the temporal RPE compared with the nasal region. Moreover, SCGx induced a decrease in the antioxidant system, and in mitochondria mass, as well as an increase in mitochondria superoxide, lipid peroxidation products, nuclear Nrf2 and heme oxygenase-1 levels, and in the occurrence of damaged mitochondria exclusively at the temporal RPE. These findings suggest that despite the well-known differences between the human and mouse retina, it might not be NE-AMD pathophysiology which conditions the localization of the disease, but the macular RPE histologic and metabolic specific attributes that make it more susceptible to choroid alterations leading initially to a localized RPE dysfunction/damage, and secondarily to macular degeneration. - Fuente
- Free Radical Biology and Medicine. 2019, 131
- Materia
-
CEGUERA
ANTIOXIDANTES
MITOCONDRIA
DEGENERACION MACULAR
ESTRES OXIDATIVO
GANGLIOS
ENVEJECIMIENTO - Nivel de accesibilidad
- acceso abierto
- Condiciones de uso
- https://creativecommons.org/licenses/by-nc-sa/4.0/
- Repositorio
- Institución
- Pontificia Universidad Católica Argentina
- OAI Identificador
- oai:ucacris:123456789/9159
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Oxidative stress damage circumscribed to the central temporal retinal pigment epithelium in early experimental non-exudative age-related macular degenerationDieguez, Hernán H.Romeo, HoracioAlaimo, AgustinaGonzález Fleitas, María F.Aranda, Marcos L.Rosenstein, Ruth E.Dorfman, DamiánCEGUERAANTIOXIDANTESMITOCONDRIADEGENERACION MACULARESTRES OXIDATIVOGANGLIOSENVEJECIMIENTOFil: Dieguez, Hernán H. Universidad de Buenos Aires. Facultad de Medicina. Departamento de Bioquímica Humana. Laboratorio de Neuroquímica Retinal y Oftamología Experimental; ArgentinaFil: Dieguez, Hernán H. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro de Estudios Farmacológicos y Botánicos; ArgentinaFil: Romeo, Horacio. Pontificia Universidad Católica Argentina. Facultad de Ciencias Médicas. Instituto de Investigaciones Biomédicas; ArgentinaFil: Romeo, Horacio. Consejo Nacional de Investigaciones Científicas y Técnicas; ArgentinaFil: Alaimo, Agustina. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Departamento de Química Biológica. Instituto de Química Biológica de la Facultad de Ciencias Exactas y Naturales. Laboratorio Interdisciplinario de Dinámica Celular y Nanoherramientas; ArgentinaFil: Alaimo, Agustina. Consejo Nacional de Investigaciones Científicas y Técnicas; ArgentinaFil: González Fleitas, María F. Universidad de Buenos Aires. Facultad de Medicina. Departamento de Bioquímica Humana. Laboratorio de Neuroquímica Retinal y Oftamología Experimental; ArgentinaFil: González Fleitas, María F. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro de Estudios Farmacológicos y Botánicos; ArgentinaFil: Aranda, Marcos L. Universidad de Buenos Aires. Facultad de Medicina. Departamento de Bioquímica Humana. Laboratorio de Neuroquímica Retinal y Oftamología Experimental; ArgentinaFil: Aranda, Marcos L. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro de Estudios Farmacológicos y Botánicos; ArgentinaFil: Rosenstein, Ruth E. Universidad de Buenos Aires. Facultad de Medicina. Departamento de Bioquímica Humana. Laboratorio de Neuroquímica Retinal y Oftamología Experimental; ArgentinaFil: Rosenstein, Ruth E. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro de Estudios Farmacológicos y Botánicos; ArgentinaFil: Dorfman, Damián. Universidad de Buenos Aires. Facultad de Medicina. Departamento de Bioquímica Humana. Laboratorio de Neuroquímica Retinal y Oftamología Experimental; ArgentinaFil: Dorfman, Damián. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro de Estudios Farmacológicos y Botánicos; ArgentinaAbstract: Non-exudative age-related macular degeneration (NE-AMD) represents the leading cause of blindness in the elderly. The macular retinal pigment epithelium (RPE) lies in a high oxidative environment because its high metabolic demand, mitochondria concentration, reactive oxygen species levels, and macular blood flow. It has been suggested that oxidative stress-induced damage to the RPE plays a key role in NE-AMD pathogenesis. The fact that the disease limits to the macular region raises the question as to why this area is particularly susceptible. We have developed a NE-AMD model induced by superior cervical ganglionectomy (SCGx) in C57BL/6J mice, which reproduces the disease hallmarks exclusively circumscribed to the temporal region of the RPE/outer retina. The aim of this work was analyzing RPE regional differences that could explain AMD localized susceptibility. Lower melanin content, thicker basal infoldings, higher mitochondrial mass, and higher levels of antioxidant enzymes, were found in the temporal RPE compared with the nasal region. Moreover, SCGx induced a decrease in the antioxidant system, and in mitochondria mass, as well as an increase in mitochondria superoxide, lipid peroxidation products, nuclear Nrf2 and heme oxygenase-1 levels, and in the occurrence of damaged mitochondria exclusively at the temporal RPE. These findings suggest that despite the well-known differences between the human and mouse retina, it might not be NE-AMD pathophysiology which conditions the localization of the disease, but the macular RPE histologic and metabolic specific attributes that make it more susceptible to choroid alterations leading initially to a localized RPE dysfunction/damage, and secondarily to macular degeneration.Elsevier2019info:eu-repo/semantics/articleinfo:eu-repo/semantics/acceptedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfhttps://repositorio.uca.edu.ar/handle/123456789/91590891-584910.1016/j.freeradbiomed.2018.11.03530502459Dieguez, H.H. et al. Oxidative stress damage circumscribed to the central temporal retinal pigment epithelium in early experimental non-exudative age-related macular degeneration [en línea]. Free Radical Biology and Medicine. 2019, 131. ISSN 0891-5849. doi:10.1016/j.freeradbiomed.2018.11.035 Disponible en: https://repositorio.uca.edu.ar/handle/123456789/9159Free Radical Biology and Medicine. 2019, 131reponame:Repositorio Institucional (UCA)instname:Pontificia Universidad Católica Argentinaenginfo:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/4.0/2025-07-03T10:57:02Zoai:ucacris:123456789/9159instacron:UCAInstitucionalhttps://repositorio.uca.edu.ar/Universidad privadaNo correspondehttps://repositorio.uca.edu.ar/oaiclaudia_fernandez@uca.edu.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:25852025-07-03 10:57:02.695Repositorio Institucional (UCA) - Pontificia Universidad Católica Argentinafalse |
dc.title.none.fl_str_mv |
Oxidative stress damage circumscribed to the central temporal retinal pigment epithelium in early experimental non-exudative age-related macular degeneration |
title |
Oxidative stress damage circumscribed to the central temporal retinal pigment epithelium in early experimental non-exudative age-related macular degeneration |
spellingShingle |
Oxidative stress damage circumscribed to the central temporal retinal pigment epithelium in early experimental non-exudative age-related macular degeneration Dieguez, Hernán H. CEGUERA ANTIOXIDANTES MITOCONDRIA DEGENERACION MACULAR ESTRES OXIDATIVO GANGLIOS ENVEJECIMIENTO |
title_short |
Oxidative stress damage circumscribed to the central temporal retinal pigment epithelium in early experimental non-exudative age-related macular degeneration |
title_full |
Oxidative stress damage circumscribed to the central temporal retinal pigment epithelium in early experimental non-exudative age-related macular degeneration |
title_fullStr |
Oxidative stress damage circumscribed to the central temporal retinal pigment epithelium in early experimental non-exudative age-related macular degeneration |
title_full_unstemmed |
Oxidative stress damage circumscribed to the central temporal retinal pigment epithelium in early experimental non-exudative age-related macular degeneration |
title_sort |
Oxidative stress damage circumscribed to the central temporal retinal pigment epithelium in early experimental non-exudative age-related macular degeneration |
dc.creator.none.fl_str_mv |
Dieguez, Hernán H. Romeo, Horacio Alaimo, Agustina González Fleitas, María F. Aranda, Marcos L. Rosenstein, Ruth E. Dorfman, Damián |
author |
Dieguez, Hernán H. |
author_facet |
Dieguez, Hernán H. Romeo, Horacio Alaimo, Agustina González Fleitas, María F. Aranda, Marcos L. Rosenstein, Ruth E. Dorfman, Damián |
author_role |
author |
author2 |
Romeo, Horacio Alaimo, Agustina González Fleitas, María F. Aranda, Marcos L. Rosenstein, Ruth E. Dorfman, Damián |
author2_role |
author author author author author author |
dc.subject.none.fl_str_mv |
CEGUERA ANTIOXIDANTES MITOCONDRIA DEGENERACION MACULAR ESTRES OXIDATIVO GANGLIOS ENVEJECIMIENTO |
topic |
CEGUERA ANTIOXIDANTES MITOCONDRIA DEGENERACION MACULAR ESTRES OXIDATIVO GANGLIOS ENVEJECIMIENTO |
dc.description.none.fl_txt_mv |
Fil: Dieguez, Hernán H. Universidad de Buenos Aires. Facultad de Medicina. Departamento de Bioquímica Humana. Laboratorio de Neuroquímica Retinal y Oftamología Experimental; Argentina Fil: Dieguez, Hernán H. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro de Estudios Farmacológicos y Botánicos; Argentina Fil: Romeo, Horacio. Pontificia Universidad Católica Argentina. Facultad de Ciencias Médicas. Instituto de Investigaciones Biomédicas; Argentina Fil: Romeo, Horacio. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina Fil: Alaimo, Agustina. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Departamento de Química Biológica. Instituto de Química Biológica de la Facultad de Ciencias Exactas y Naturales. Laboratorio Interdisciplinario de Dinámica Celular y Nanoherramientas; Argentina Fil: Alaimo, Agustina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina Fil: González Fleitas, María F. Universidad de Buenos Aires. Facultad de Medicina. Departamento de Bioquímica Humana. Laboratorio de Neuroquímica Retinal y Oftamología Experimental; Argentina Fil: González Fleitas, María F. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro de Estudios Farmacológicos y Botánicos; Argentina Fil: Aranda, Marcos L. Universidad de Buenos Aires. Facultad de Medicina. Departamento de Bioquímica Humana. Laboratorio de Neuroquímica Retinal y Oftamología Experimental; Argentina Fil: Aranda, Marcos L. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro de Estudios Farmacológicos y Botánicos; Argentina Fil: Rosenstein, Ruth E. Universidad de Buenos Aires. Facultad de Medicina. Departamento de Bioquímica Humana. Laboratorio de Neuroquímica Retinal y Oftamología Experimental; Argentina Fil: Rosenstein, Ruth E. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro de Estudios Farmacológicos y Botánicos; Argentina Fil: Dorfman, Damián. Universidad de Buenos Aires. Facultad de Medicina. Departamento de Bioquímica Humana. Laboratorio de Neuroquímica Retinal y Oftamología Experimental; Argentina Fil: Dorfman, Damián. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro de Estudios Farmacológicos y Botánicos; Argentina Abstract: Non-exudative age-related macular degeneration (NE-AMD) represents the leading cause of blindness in the elderly. The macular retinal pigment epithelium (RPE) lies in a high oxidative environment because its high metabolic demand, mitochondria concentration, reactive oxygen species levels, and macular blood flow. It has been suggested that oxidative stress-induced damage to the RPE plays a key role in NE-AMD pathogenesis. The fact that the disease limits to the macular region raises the question as to why this area is particularly susceptible. We have developed a NE-AMD model induced by superior cervical ganglionectomy (SCGx) in C57BL/6J mice, which reproduces the disease hallmarks exclusively circumscribed to the temporal region of the RPE/outer retina. The aim of this work was analyzing RPE regional differences that could explain AMD localized susceptibility. Lower melanin content, thicker basal infoldings, higher mitochondrial mass, and higher levels of antioxidant enzymes, were found in the temporal RPE compared with the nasal region. Moreover, SCGx induced a decrease in the antioxidant system, and in mitochondria mass, as well as an increase in mitochondria superoxide, lipid peroxidation products, nuclear Nrf2 and heme oxygenase-1 levels, and in the occurrence of damaged mitochondria exclusively at the temporal RPE. These findings suggest that despite the well-known differences between the human and mouse retina, it might not be NE-AMD pathophysiology which conditions the localization of the disease, but the macular RPE histologic and metabolic specific attributes that make it more susceptible to choroid alterations leading initially to a localized RPE dysfunction/damage, and secondarily to macular degeneration. |
description |
Fil: Dieguez, Hernán H. Universidad de Buenos Aires. Facultad de Medicina. Departamento de Bioquímica Humana. Laboratorio de Neuroquímica Retinal y Oftamología Experimental; Argentina |
publishDate |
2019 |
dc.date.none.fl_str_mv |
2019 |
dc.type.none.fl_str_mv |
info:eu-repo/semantics/article info:eu-repo/semantics/acceptedVersion http://purl.org/coar/resource_type/c_6501 info:ar-repo/semantics/articulo |
format |
article |
status_str |
acceptedVersion |
dc.identifier.none.fl_str_mv |
https://repositorio.uca.edu.ar/handle/123456789/9159 0891-5849 10.1016/j.freeradbiomed.2018.11.035 30502459 Dieguez, H.H. et al. Oxidative stress damage circumscribed to the central temporal retinal pigment epithelium in early experimental non-exudative age-related macular degeneration [en línea]. Free Radical Biology and Medicine. 2019, 131. ISSN 0891-5849. doi:10.1016/j.freeradbiomed.2018.11.035 Disponible en: https://repositorio.uca.edu.ar/handle/123456789/9159 |
url |
https://repositorio.uca.edu.ar/handle/123456789/9159 |
identifier_str_mv |
0891-5849 10.1016/j.freeradbiomed.2018.11.035 30502459 Dieguez, H.H. et al. Oxidative stress damage circumscribed to the central temporal retinal pigment epithelium in early experimental non-exudative age-related macular degeneration [en línea]. Free Radical Biology and Medicine. 2019, 131. ISSN 0891-5849. doi:10.1016/j.freeradbiomed.2018.11.035 Disponible en: https://repositorio.uca.edu.ar/handle/123456789/9159 |
dc.language.none.fl_str_mv |
eng |
language |
eng |
dc.rights.none.fl_str_mv |
info:eu-repo/semantics/openAccess https://creativecommons.org/licenses/by-nc-sa/4.0/ |
eu_rights_str_mv |
openAccess |
rights_invalid_str_mv |
https://creativecommons.org/licenses/by-nc-sa/4.0/ |
dc.format.none.fl_str_mv |
application/pdf |
dc.publisher.none.fl_str_mv |
Elsevier |
publisher.none.fl_str_mv |
Elsevier |
dc.source.none.fl_str_mv |
Free Radical Biology and Medicine. 2019, 131 reponame:Repositorio Institucional (UCA) instname:Pontificia Universidad Católica Argentina |
reponame_str |
Repositorio Institucional (UCA) |
collection |
Repositorio Institucional (UCA) |
instname_str |
Pontificia Universidad Católica Argentina |
repository.name.fl_str_mv |
Repositorio Institucional (UCA) - Pontificia Universidad Católica Argentina |
repository.mail.fl_str_mv |
claudia_fernandez@uca.edu.ar |
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1836638348855214080 |
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13.070432 |