Brain antioxidant status in a high pressure–induced rat model of glaucoma

Autores
Ferreira, Sandra María; Lerner, Fabián; Reides, Claudia Gabriela; Brunzini, Ricardo; Llesuy, Susana Francisca
Año de publicación
2013
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
PURPOSE: The goal of the present study is to establish the antioxidant status in the brain of a high pressure-induced rat model. METHODS: Ocular hypertension was induced in rats (n = 12) cauterizing two episcleral veins under a surgical microscope. A sham procedure (n = 12) was performed in the control group. The markers evaluated in the brain 7 days after surgery were as follows: spontaneous chemiluminescence, protein carbonylation, nitrite concentration, total reactive antioxidant potential (TRAP), ascorbic acid, glutathione, vitamin E and activities of superoxide dismutase (SOD), glutathione peroxidase (GPx) and catalase. RESULTS: Chemiluminescence in glaucoma was 55% higher than in controls (393 ± 20 cpm/mg protein, p < 0.001). Protein carbonylation in glaucoma was 93% higher than in controls (1.15 ± 0.18 nmol/mg protein, p < 0.001). Nitrite concentration was 5.30 ± 0.25 μM for glaucoma (controls 4.41 ± 0.24 μM, p < 0.05). Total reactive antioxidant potential decreased by 42% in glaucoma (controls 153 ± 14 μM Trolox, p < 0.001). Ascorbic acid was 67 ± 26 μM for glaucoma (controls 275 ± 22 μM, p < 0.001). Vitamin E was 0.58 ± 0.05 μmol/g organ for glaucoma (controls 1.10 ± 0.06 μmol/g organ, p < 0.01). Glutathione was 1.98 ± 0.13 μmol/g organ for glaucoma (controls 8.19 ± 0.71 μmol/g organ, p < 0.001). Superoxide dismutase and GPx were increased in glaucoma by 42 and 59%, respectively (p < 0.05). CONCLUSIONS: Reactive oxygen and nitrogen species were increased in glaucoma, the increase in chemiluminescence, protein carbonylation and nitrite levels could be evidenced by this situation. The decrease in nonenzymatic antioxidants and a compensatory increase in SOD and GPx activity may have been a consequence of an increase in oxidative processes.
Fil: Ferreira, Sandra María. Universidad de Buenos Aires. Facultad de Farmacia y Bioquímica. Departamento de Química Analítica y Fisicoquímica. Cátedra de Química General e Inorgánica; Argentina
Fil: Lerner, Fabián. Fundación para la Investigación del Glaucoma; Argentina
Fil: Reides, Claudia Gabriela. Universidad de Buenos Aires. Facultad de Farmacia y Bioquímica. Departamento de Química Analítica y Fisicoquímica. Cátedra de Química General e Inorgánica; Argentina
Fil: Brunzini, Ricardo. Universidad de Buenos Aires. Facultad de Farmacia y Bioquímica. Departamento de Química Analítica y Fisicoquímica. Cátedra de Química General e Inorgánica; Argentina
Fil: Llesuy, Susana Francisca. Universidad de Buenos Aires. Facultad de Farmacia y Bioquímica. Departamento de Química Analítica y Fisicoquímica. Cátedra de Química General e Inorgánica; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Houssay. Programa de Radicales Libres; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina
Materia
Glaucoma
Antioxidants
Brain
Oxidative Stress
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:11336/21318
Acceder
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oai_identifier_str oai:ri.conicet.gov.ar:11336/21318
network_acronym_str CONICETDig
repository_id_str 3498
network_name_str CONICET Digital (CONICET)
spelling Brain antioxidant status in a high pressure–induced rat model of glaucomaFerreira, Sandra MaríaLerner, FabiánReides, Claudia GabrielaBrunzini, RicardoLlesuy, Susana FranciscaGlaucomaAntioxidantsBrainOxidative Stresshttps://purl.org/becyt/ford/3.3https://purl.org/becyt/ford/3PURPOSE: The goal of the present study is to establish the antioxidant status in the brain of a high pressure-induced rat model. METHODS: Ocular hypertension was induced in rats (n = 12) cauterizing two episcleral veins under a surgical microscope. A sham procedure (n = 12) was performed in the control group. The markers evaluated in the brain 7 days after surgery were as follows: spontaneous chemiluminescence, protein carbonylation, nitrite concentration, total reactive antioxidant potential (TRAP), ascorbic acid, glutathione, vitamin E and activities of superoxide dismutase (SOD), glutathione peroxidase (GPx) and catalase. RESULTS: Chemiluminescence in glaucoma was 55% higher than in controls (393 ± 20 cpm/mg protein, p < 0.001). Protein carbonylation in glaucoma was 93% higher than in controls (1.15 ± 0.18 nmol/mg protein, p < 0.001). Nitrite concentration was 5.30 ± 0.25 μM for glaucoma (controls 4.41 ± 0.24 μM, p < 0.05). Total reactive antioxidant potential decreased by 42% in glaucoma (controls 153 ± 14 μM Trolox, p < 0.001). Ascorbic acid was 67 ± 26 μM for glaucoma (controls 275 ± 22 μM, p < 0.001). Vitamin E was 0.58 ± 0.05 μmol/g organ for glaucoma (controls 1.10 ± 0.06 μmol/g organ, p < 0.01). Glutathione was 1.98 ± 0.13 μmol/g organ for glaucoma (controls 8.19 ± 0.71 μmol/g organ, p < 0.001). Superoxide dismutase and GPx were increased in glaucoma by 42 and 59%, respectively (p < 0.05). CONCLUSIONS: Reactive oxygen and nitrogen species were increased in glaucoma, the increase in chemiluminescence, protein carbonylation and nitrite levels could be evidenced by this situation. The decrease in nonenzymatic antioxidants and a compensatory increase in SOD and GPx activity may have been a consequence of an increase in oxidative processes.Fil: Ferreira, Sandra María. Universidad de Buenos Aires. Facultad de Farmacia y Bioquímica. Departamento de Química Analítica y Fisicoquímica. Cátedra de Química General e Inorgánica; ArgentinaFil: Lerner, Fabián. Fundación para la Investigación del Glaucoma; ArgentinaFil: Reides, Claudia Gabriela. Universidad de Buenos Aires. Facultad de Farmacia y Bioquímica. Departamento de Química Analítica y Fisicoquímica. Cátedra de Química General e Inorgánica; ArgentinaFil: Brunzini, Ricardo. Universidad de Buenos Aires. Facultad de Farmacia y Bioquímica. Departamento de Química Analítica y Fisicoquímica. Cátedra de Química General e Inorgánica; ArgentinaFil: Llesuy, Susana Francisca. Universidad de Buenos Aires. Facultad de Farmacia y Bioquímica. Departamento de Química Analítica y Fisicoquímica. Cátedra de Química General e Inorgánica; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Houssay. Programa de Radicales Libres; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; ArgentinaWiley2013-02info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/21318Ferreira, Sandra María; Lerner, Fabián; Reides, Claudia Gabriela; Brunzini, Ricardo; Llesuy, Susana Francisca; Brain antioxidant status in a high pressure–induced rat model of glaucoma; Wiley; Acta Ophthalmologica; 91; 1; 2-2013; 64-701755-375X1755-3768CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/url/http://onlinelibrary.wiley.com/doi/10.1111/j.1755-3768.2012.02572.x/abstractinfo:eu-repo/semantics/altIdentifier/doi/10.1111/j.1755-3768.2012.02572.xinfo:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-10-22T11:24:13Zoai:ri.conicet.gov.ar:11336/21318instacron: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:34982025-10-22 11:24:13.603CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv Brain antioxidant status in a high pressure–induced rat model of glaucoma
title Brain antioxidant status in a high pressure–induced rat model of glaucoma
spellingShingle Brain antioxidant status in a high pressure–induced rat model of glaucoma
Ferreira, Sandra María
Glaucoma
Antioxidants
Brain
Oxidative Stress
title_short Brain antioxidant status in a high pressure–induced rat model of glaucoma
title_full Brain antioxidant status in a high pressure–induced rat model of glaucoma
title_fullStr Brain antioxidant status in a high pressure–induced rat model of glaucoma
title_full_unstemmed Brain antioxidant status in a high pressure–induced rat model of glaucoma
title_sort Brain antioxidant status in a high pressure–induced rat model of glaucoma
dc.creator.none.fl_str_mv Ferreira, Sandra María
Lerner, Fabián
Reides, Claudia Gabriela
Brunzini, Ricardo
Llesuy, Susana Francisca
author Ferreira, Sandra María
author_facet Ferreira, Sandra María
Lerner, Fabián
Reides, Claudia Gabriela
Brunzini, Ricardo
Llesuy, Susana Francisca
author_role author
author2 Lerner, Fabián
Reides, Claudia Gabriela
Brunzini, Ricardo
Llesuy, Susana Francisca
author2_role author
author
author
author
dc.subject.none.fl_str_mv Glaucoma
Antioxidants
Brain
Oxidative Stress
topic Glaucoma
Antioxidants
Brain
Oxidative Stress
purl_subject.fl_str_mv https://purl.org/becyt/ford/3.3
https://purl.org/becyt/ford/3
dc.description.none.fl_txt_mv PURPOSE: The goal of the present study is to establish the antioxidant status in the brain of a high pressure-induced rat model. METHODS: Ocular hypertension was induced in rats (n = 12) cauterizing two episcleral veins under a surgical microscope. A sham procedure (n = 12) was performed in the control group. The markers evaluated in the brain 7 days after surgery were as follows: spontaneous chemiluminescence, protein carbonylation, nitrite concentration, total reactive antioxidant potential (TRAP), ascorbic acid, glutathione, vitamin E and activities of superoxide dismutase (SOD), glutathione peroxidase (GPx) and catalase. RESULTS: Chemiluminescence in glaucoma was 55% higher than in controls (393 ± 20 cpm/mg protein, p < 0.001). Protein carbonylation in glaucoma was 93% higher than in controls (1.15 ± 0.18 nmol/mg protein, p < 0.001). Nitrite concentration was 5.30 ± 0.25 μM for glaucoma (controls 4.41 ± 0.24 μM, p < 0.05). Total reactive antioxidant potential decreased by 42% in glaucoma (controls 153 ± 14 μM Trolox, p < 0.001). Ascorbic acid was 67 ± 26 μM for glaucoma (controls 275 ± 22 μM, p < 0.001). Vitamin E was 0.58 ± 0.05 μmol/g organ for glaucoma (controls 1.10 ± 0.06 μmol/g organ, p < 0.01). Glutathione was 1.98 ± 0.13 μmol/g organ for glaucoma (controls 8.19 ± 0.71 μmol/g organ, p < 0.001). Superoxide dismutase and GPx were increased in glaucoma by 42 and 59%, respectively (p < 0.05). CONCLUSIONS: Reactive oxygen and nitrogen species were increased in glaucoma, the increase in chemiluminescence, protein carbonylation and nitrite levels could be evidenced by this situation. The decrease in nonenzymatic antioxidants and a compensatory increase in SOD and GPx activity may have been a consequence of an increase in oxidative processes.
Fil: Ferreira, Sandra María. Universidad de Buenos Aires. Facultad de Farmacia y Bioquímica. Departamento de Química Analítica y Fisicoquímica. Cátedra de Química General e Inorgánica; Argentina
Fil: Lerner, Fabián. Fundación para la Investigación del Glaucoma; Argentina
Fil: Reides, Claudia Gabriela. Universidad de Buenos Aires. Facultad de Farmacia y Bioquímica. Departamento de Química Analítica y Fisicoquímica. Cátedra de Química General e Inorgánica; Argentina
Fil: Brunzini, Ricardo. Universidad de Buenos Aires. Facultad de Farmacia y Bioquímica. Departamento de Química Analítica y Fisicoquímica. Cátedra de Química General e Inorgánica; Argentina
Fil: Llesuy, Susana Francisca. Universidad de Buenos Aires. Facultad de Farmacia y Bioquímica. Departamento de Química Analítica y Fisicoquímica. Cátedra de Química General e Inorgánica; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Houssay. Programa de Radicales Libres; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina
description PURPOSE: The goal of the present study is to establish the antioxidant status in the brain of a high pressure-induced rat model. METHODS: Ocular hypertension was induced in rats (n = 12) cauterizing two episcleral veins under a surgical microscope. A sham procedure (n = 12) was performed in the control group. The markers evaluated in the brain 7 days after surgery were as follows: spontaneous chemiluminescence, protein carbonylation, nitrite concentration, total reactive antioxidant potential (TRAP), ascorbic acid, glutathione, vitamin E and activities of superoxide dismutase (SOD), glutathione peroxidase (GPx) and catalase. RESULTS: Chemiluminescence in glaucoma was 55% higher than in controls (393 ± 20 cpm/mg protein, p < 0.001). Protein carbonylation in glaucoma was 93% higher than in controls (1.15 ± 0.18 nmol/mg protein, p < 0.001). Nitrite concentration was 5.30 ± 0.25 μM for glaucoma (controls 4.41 ± 0.24 μM, p < 0.05). Total reactive antioxidant potential decreased by 42% in glaucoma (controls 153 ± 14 μM Trolox, p < 0.001). Ascorbic acid was 67 ± 26 μM for glaucoma (controls 275 ± 22 μM, p < 0.001). Vitamin E was 0.58 ± 0.05 μmol/g organ for glaucoma (controls 1.10 ± 0.06 μmol/g organ, p < 0.01). Glutathione was 1.98 ± 0.13 μmol/g organ for glaucoma (controls 8.19 ± 0.71 μmol/g organ, p < 0.001). Superoxide dismutase and GPx were increased in glaucoma by 42 and 59%, respectively (p < 0.05). CONCLUSIONS: Reactive oxygen and nitrogen species were increased in glaucoma, the increase in chemiluminescence, protein carbonylation and nitrite levels could be evidenced by this situation. The decrease in nonenzymatic antioxidants and a compensatory increase in SOD and GPx activity may have been a consequence of an increase in oxidative processes.
publishDate 2013
dc.date.none.fl_str_mv 2013-02
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/11336/21318
Ferreira, Sandra María; Lerner, Fabián; Reides, Claudia Gabriela; Brunzini, Ricardo; Llesuy, Susana Francisca; Brain antioxidant status in a high pressure–induced rat model of glaucoma; Wiley; Acta Ophthalmologica; 91; 1; 2-2013; 64-70
1755-375X
1755-3768
CONICET Digital
CONICET
url http://hdl.handle.net/11336/21318
identifier_str_mv Ferreira, Sandra María; Lerner, Fabián; Reides, Claudia Gabriela; Brunzini, Ricardo; Llesuy, Susana Francisca; Brain antioxidant status in a high pressure–induced rat model of glaucoma; Wiley; Acta Ophthalmologica; 91; 1; 2-2013; 64-70
1755-375X
1755-3768
CONICET Digital
CONICET
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/url/http://onlinelibrary.wiley.com/doi/10.1111/j.1755-3768.2012.02572.x/abstract
info:eu-repo/semantics/altIdentifier/doi/10.1111/j.1755-3768.2012.02572.x
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
dc.publisher.none.fl_str_mv Wiley
publisher.none.fl_str_mv Wiley
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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score 12.982451

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