Antioxidant Treatment Induces Hyperactivation of the HPA Axis by Upregulating ACTH Receptor in the Adrenal and Downregulating Glucocorticoid Receptors in the Pituitary

Detalhes bibliográficos
Autor(a) principal: Prevatto, Jessika P.
Data de Publicação: 2017
Outros Autores: Torres, Rafael C., Diaz, Bruno L., Silva, Patrícia M. R. e, Martins, Marco A., Carvalho, Vinicius F.
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Repositório Institucional da FIOCRUZ (ARCA)
Texto Completo: https://www.arca.fiocruz.br/handle/icict/19675
Resumo: Fundação Oswaldo Cruz. Instituto Oswaldo Cruz. Laboratório de Inflamação. Rio de Janeiro, RJ. Brasil.
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spelling Prevatto, Jessika P.Torres, Rafael C.Diaz, Bruno L.Silva, Patrícia M. R. eMartins, Marco A.Carvalho, Vinicius F.2017-06-29T15:56:22Z2017-06-29T15:56:22Z2017PREVATTO, Jessika P. et al. Antioxidant Treatment Induces Hyperactivation of the HPA Axis by Upregulating ACTH Receptor in the Adrenal and Downregulating Glucocorticoid Receptors in the Pituitary. Oxidative Medicine and Cellular Longevity, Vol. 2017, Article ID 4156361, 10p, 20171942-0900https://www.arca.fiocruz.br/handle/icict/1967510.1155/2017/41563611942-0994engHindawi Publishing CorporationTratamento com antioxidantesGlândulas SuprarrenaisSistema Hipófise-SuprarrenalReceptores de GlucocorticoidesGlucocorticoid ReceptorsAntioxidant TreatmentHPAHyperactivationPituitary-Adrenal SystemAntioxidant Treatment Induces Hyperactivation of the HPA Axis by Upregulating ACTH Receptor in the Adrenal and Downregulating Glucocorticoid Receptors in the Pituitaryinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articleFundação Oswaldo Cruz. Instituto Oswaldo Cruz. Laboratório de Inflamação. Rio de Janeiro, RJ. Brasil.Universidade Federal do Rio de Janeiro. Instituto de Biofísica Carlos Chagas Filho. Laboratório de Inflamação. Rio de Janeiro, RJ, Brasil.Universidade Federal do Rio de Janeiro. Instituto de Biofísica Carlos Chagas Filho. Laboratório de Inflamação. Rio de Janeiro, RJ, Brasil.Fundação Oswaldo Cruz. Instituto Oswaldo Cruz. Laboratório de Inflamação. Rio de Janeiro, RJ. Brasil.Fundação Oswaldo Cruz. Instituto Oswaldo Cruz. Laboratório de Inflamação. Rio de Janeiro, RJ. Brasil.Fundação Oswaldo Cruz. Instituto Oswaldo Cruz. Laboratório de Inflamação. Rio de Janeiro, RJ. Brasil / Instituto Nacional de Ciência e Tecnologia em Neuroimunomodulação. Rio de Janeiro, RJ, Brasil. .Glucocorticoid (GC) production is physiologically regulated through a negative feedback loop mediated by the GC, which appear disrupted in several pathological conditions. The inability to perform negative feedback of the hypothalamus-pituitary-adrenal (HPA) axis in several diseases is associated with an overproduction of reactive oxygen species (ROS); however, nothing is known about the effects of ROS on the functionality of the HPA axis during homeostasis. This study analyzed the putative impact of antioxidants on the HPA axis activity and GC-mediated negative feedback upon the HPA cascade. Male Wistar rats were orally treated with N-acetylcysteine (NAC) or vitamin E for 18 consecutive days. NAC-treated rats were then subjected to a daily treatment with dexamethasone, which covered the last 5 days of the antioxidant therapy. We found that NAC and vitamin E induced an increase in plasma corticosterone levels. NAC intensified MC2R and StAR expressions in the adrenal and reduced GR and MR expressions in the pituitary. NAC also prevented the dexamethasone-induced reduction in plasma corticosterone levels. Furthermore, NAC decreased HO-1 and Nrf2 expression in the pituitary. These findings show that antioxidants induce hyperactivity of the HPA axis via upregulation of MC2R expression in the adrenal and downregulation of GR and MR in the pituitary.info:eu-repo/semantics/openAccessreponame:Repositório Institucional da FIOCRUZ (ARCA)instname:Fundação Oswaldo Cruz (FIOCRUZ)instacron:FIOCRUZLICENSElicense.txtlicense.txttext/plain; charset=utf-82991https://www.arca.fiocruz.br/bitstream/icict/19675/1/license.txt5a560609d32a3863062d77ff32785d58MD51ORIGINALjessika_prevatto_etal_IOC_2017.pdfjessika_prevatto_etal_IOC_2017.pdfapplication/pdf6433963https://www.arca.fiocruz.br/bitstream/icict/19675/2/jessika_prevatto_etal_IOC_2017.pdfdb1220d6ab514f6415803c62d8fa5040MD52TEXTjessika_prevatto_etal_IOC_2017.pdf.txtjessika_prevatto_etal_IOC_2017.pdf.txtExtracted texttext/plain46886https://www.arca.fiocruz.br/bitstream/icict/19675/3/jessika_prevatto_etal_IOC_2017.pdf.txt6093019d86efc64ec15edf50154338d8MD53icict/196752023-09-05 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dc.title.pt_BR.fl_str_mv Antioxidant Treatment Induces Hyperactivation of the HPA Axis by Upregulating ACTH Receptor in the Adrenal and Downregulating Glucocorticoid Receptors in the Pituitary
title Antioxidant Treatment Induces Hyperactivation of the HPA Axis by Upregulating ACTH Receptor in the Adrenal and Downregulating Glucocorticoid Receptors in the Pituitary
spellingShingle Antioxidant Treatment Induces Hyperactivation of the HPA Axis by Upregulating ACTH Receptor in the Adrenal and Downregulating Glucocorticoid Receptors in the Pituitary
Prevatto, Jessika P.
Tratamento com antioxidantes
Glândulas Suprarrenais
Sistema Hipófise-Suprarrenal
Receptores de Glucocorticoides
Glucocorticoid Receptors
Antioxidant Treatment
HPA
Hyperactivation
Pituitary-Adrenal System
title_short Antioxidant Treatment Induces Hyperactivation of the HPA Axis by Upregulating ACTH Receptor in the Adrenal and Downregulating Glucocorticoid Receptors in the Pituitary
title_full Antioxidant Treatment Induces Hyperactivation of the HPA Axis by Upregulating ACTH Receptor in the Adrenal and Downregulating Glucocorticoid Receptors in the Pituitary
title_fullStr Antioxidant Treatment Induces Hyperactivation of the HPA Axis by Upregulating ACTH Receptor in the Adrenal and Downregulating Glucocorticoid Receptors in the Pituitary
title_full_unstemmed Antioxidant Treatment Induces Hyperactivation of the HPA Axis by Upregulating ACTH Receptor in the Adrenal and Downregulating Glucocorticoid Receptors in the Pituitary
title_sort Antioxidant Treatment Induces Hyperactivation of the HPA Axis by Upregulating ACTH Receptor in the Adrenal and Downregulating Glucocorticoid Receptors in the Pituitary
author Prevatto, Jessika P.
author_facet Prevatto, Jessika P.
Torres, Rafael C.
Diaz, Bruno L.
Silva, Patrícia M. R. e
Martins, Marco A.
Carvalho, Vinicius F.
author_role author
author2 Torres, Rafael C.
Diaz, Bruno L.
Silva, Patrícia M. R. e
Martins, Marco A.
Carvalho, Vinicius F.
author2_role author
author
author
author
author
dc.contributor.author.fl_str_mv Prevatto, Jessika P.
Torres, Rafael C.
Diaz, Bruno L.
Silva, Patrícia M. R. e
Martins, Marco A.
Carvalho, Vinicius F.
dc.subject.other.pt_BR.fl_str_mv Tratamento com antioxidantes
Glândulas Suprarrenais
Sistema Hipófise-Suprarrenal
Receptores de Glucocorticoides
topic Tratamento com antioxidantes
Glândulas Suprarrenais
Sistema Hipófise-Suprarrenal
Receptores de Glucocorticoides
Glucocorticoid Receptors
Antioxidant Treatment
HPA
Hyperactivation
Pituitary-Adrenal System
dc.subject.en.pt_BR.fl_str_mv Glucocorticoid Receptors
Antioxidant Treatment
HPA
Hyperactivation
Pituitary-Adrenal System
description Fundação Oswaldo Cruz. Instituto Oswaldo Cruz. Laboratório de Inflamação. Rio de Janeiro, RJ. Brasil.
publishDate 2017
dc.date.accessioned.fl_str_mv 2017-06-29T15:56:22Z
dc.date.available.fl_str_mv 2017-06-29T15:56:22Z
dc.date.issued.fl_str_mv 2017
dc.type.status.fl_str_mv info:eu-repo/semantics/publishedVersion
dc.type.driver.fl_str_mv info:eu-repo/semantics/article
format article
status_str publishedVersion
dc.identifier.citation.fl_str_mv PREVATTO, Jessika P. et al. Antioxidant Treatment Induces Hyperactivation of the HPA Axis by Upregulating ACTH Receptor in the Adrenal and Downregulating Glucocorticoid Receptors in the Pituitary. Oxidative Medicine and Cellular Longevity, Vol. 2017, Article ID 4156361, 10p, 2017
dc.identifier.uri.fl_str_mv https://www.arca.fiocruz.br/handle/icict/19675
dc.identifier.issn.pt_BR.fl_str_mv 1942-0900
dc.identifier.doi.none.fl_str_mv 10.1155/2017/4156361
dc.identifier.eissn.none.fl_str_mv 1942-0994
identifier_str_mv PREVATTO, Jessika P. et al. Antioxidant Treatment Induces Hyperactivation of the HPA Axis by Upregulating ACTH Receptor in the Adrenal and Downregulating Glucocorticoid Receptors in the Pituitary. Oxidative Medicine and Cellular Longevity, Vol. 2017, Article ID 4156361, 10p, 2017
1942-0900
10.1155/2017/4156361
1942-0994
url https://www.arca.fiocruz.br/handle/icict/19675
dc.language.iso.fl_str_mv eng
language eng
dc.rights.driver.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.publisher.none.fl_str_mv Hindawi Publishing Corporation
publisher.none.fl_str_mv Hindawi Publishing Corporation
dc.source.none.fl_str_mv reponame:Repositório Institucional da FIOCRUZ (ARCA)
instname:Fundação Oswaldo Cruz (FIOCRUZ)
instacron:FIOCRUZ
instname_str Fundação Oswaldo Cruz (FIOCRUZ)
instacron_str FIOCRUZ
institution FIOCRUZ
reponame_str Repositório Institucional da FIOCRUZ (ARCA)
collection Repositório Institucional da FIOCRUZ (ARCA)
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https://www.arca.fiocruz.br/bitstream/icict/19675/2/jessika_prevatto_etal_IOC_2017.pdf
https://www.arca.fiocruz.br/bitstream/icict/19675/3/jessika_prevatto_etal_IOC_2017.pdf.txt
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