In vivo and in vitro arsenic exposition induces oxidative stress in anterior pituitary gland
- Autores
- Ronchetti, Sonia Alejandra; Bianchi, Maria Silvia; Duvilanski, Beatriz Haydee; Cabilla, Jimena Paula
- Año de publicación
- 2016
- Idioma
- inglés
- Tipo de recurso
- artículo
- Estado
- versión publicada
- Descripción
- Inorganic arsenic (iAs) is at the top of toxic metalloids. Inorganic arsenic-contaminated water consumption is one of the greatest environmental health threats worldwide. Human iAs exposure has been associated with cancers of several organs, neurological disorders, and reproductive problems. Nevertheless, there are no reports describing how iAs affects the anterior pituitary gland. The aim of this study was to investigate the mechanisms involved in iAs-mediated anterior pituitary toxicity both in vivo and in vitro. We showed that iAs administration (from 5 to 100 ppm) to male rats through drinking water increased messenger RNA expression of several oxidative stress-responsive genes in the anterior pituitary gland. Serum prolactin levels diminished, whereasluteinizing hormone (LH) levels were only affected at the higher dose tested. In anterior pituitary cells in culture, 25 micromol/L iAssignificantly decreased prolactin release in a time-dependent fashion, whereas LH levels remained unaltered. Cell viability was significantly reduced mainly by apoptosis evidenced by morphological and phosphatidylserine externalization studies. This process is characterized by early depolarization of mitochondrial membrane potential and increased levels of reactive oxygen species. Expression of some key oxidative stress-responsive genes, such as heme oxygenase-1 and metallothionein-1, was also stimulated by iAs exposure. The antioxidant N-acetyl cysteine prevented iAs-induced effects on the expression of oxidative stress markers, prolactin release, and apoptosis. In summary, the present work demonstrates for the first time that iAs reduces prolactin releaseboth in vivo and in vitro and induces apoptosis in anterior pituitary cells, possibly resulting from imbalanced cellular redox status.
Fil: Ronchetti, Sonia Alejandra. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Houssay. Instituto de Investigaciones Biomédicas. Universidad de Buenos Aires. Facultad de Medicina. Instituto de Investigaciones Biomédicas; Argentina
Fil: Bianchi, Maria Silvia. Consejo Nacional de Investigaciones Científicas y Técnicas. Instituto de Biología y Medicina Experimental. Fundación de Instituto de Biología y Medicina Experimental. Instituto de Biología y Medicina Experimental; Argentina
Fil: Duvilanski, Beatriz Haydee. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Houssay. Instituto de Investigaciones Biomédicas. Universidad de Buenos Aires. Facultad de Medicina. Instituto de Investigaciones Biomédicas; Argentina
Fil: Cabilla, Jimena Paula. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Houssay. Instituto de Investigaciones Biomédicas. Universidad de Buenos Aires. Facultad de Medicina. Instituto de Investigaciones Biomédicas; Argentina - Materia
-
Arsenic
Oxidative Stress
Apoptosis
Anterior Pituitary Cells - Nivel de accesibilidad
- acceso abierto
- Condiciones de uso
- https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
- Repositorio
- Institución
- Consejo Nacional de Investigaciones Científicas y Técnicas
- OAI Identificador
- oai:ri.conicet.gov.ar:11336/23454
Ver los metadatos del registro completo
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In vivo and in vitro arsenic exposition induces oxidative stress in anterior pituitary glandRonchetti, Sonia AlejandraBianchi, Maria SilviaDuvilanski, Beatriz HaydeeCabilla, Jimena PaulaArsenicOxidative StressApoptosisAnterior Pituitary Cellshttps://purl.org/becyt/ford/3.1https://purl.org/becyt/ford/3Inorganic arsenic (iAs) is at the top of toxic metalloids. Inorganic arsenic-contaminated water consumption is one of the greatest environmental health threats worldwide. Human iAs exposure has been associated with cancers of several organs, neurological disorders, and reproductive problems. Nevertheless, there are no reports describing how iAs affects the anterior pituitary gland. The aim of this study was to investigate the mechanisms involved in iAs-mediated anterior pituitary toxicity both in vivo and in vitro. We showed that iAs administration (from 5 to 100 ppm) to male rats through drinking water increased messenger RNA expression of several oxidative stress-responsive genes in the anterior pituitary gland. Serum prolactin levels diminished, whereasluteinizing hormone (LH) levels were only affected at the higher dose tested. In anterior pituitary cells in culture, 25 micromol/L iAssignificantly decreased prolactin release in a time-dependent fashion, whereas LH levels remained unaltered. Cell viability was significantly reduced mainly by apoptosis evidenced by morphological and phosphatidylserine externalization studies. This process is characterized by early depolarization of mitochondrial membrane potential and increased levels of reactive oxygen species. Expression of some key oxidative stress-responsive genes, such as heme oxygenase-1 and metallothionein-1, was also stimulated by iAs exposure. The antioxidant N-acetyl cysteine prevented iAs-induced effects on the expression of oxidative stress markers, prolactin release, and apoptosis. In summary, the present work demonstrates for the first time that iAs reduces prolactin releaseboth in vivo and in vitro and induces apoptosis in anterior pituitary cells, possibly resulting from imbalanced cellular redox status.Fil: Ronchetti, Sonia Alejandra. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Houssay. Instituto de Investigaciones Biomédicas. Universidad de Buenos Aires. Facultad de Medicina. Instituto de Investigaciones Biomédicas; ArgentinaFil: Bianchi, Maria Silvia. Consejo Nacional de Investigaciones Científicas y Técnicas. Instituto de Biología y Medicina Experimental. Fundación de Instituto de Biología y Medicina Experimental. Instituto de Biología y Medicina Experimental; ArgentinaFil: Duvilanski, Beatriz Haydee. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Houssay. Instituto de Investigaciones Biomédicas. Universidad de Buenos Aires. Facultad de Medicina. Instituto de Investigaciones Biomédicas; ArgentinaFil: Cabilla, Jimena Paula. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Houssay. Instituto de Investigaciones Biomédicas. Universidad de Buenos Aires. Facultad de Medicina. Instituto de Investigaciones Biomédicas; ArgentinaSage Publications2016-04info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfapplication/pdfapplication/pdfapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/23454Ronchetti, Sonia Alejandra; Bianchi, Maria Silvia; Duvilanski, Beatriz Haydee; Cabilla, Jimena Paula; In vivo and in vitro arsenic exposition induces oxidative stress in anterior pituitary gland; Sage Publications; International Journal Of Toxicology; 35; 4; 4-2016; 463-4751091-58181092-874XCONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/url/http://journals.sagepub.com/doi/abs/10.1177/1091581816645797info:eu-repo/semantics/altIdentifier/doi/10.1177/1091581816645797info:eu-repo/semantics/altIdentifier/pmid/27151894info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-09-03T09:52:24Zoai:ri.conicet.gov.ar:11336/23454instacron: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:34982025-09-03 09:52:24.585CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse |
dc.title.none.fl_str_mv |
In vivo and in vitro arsenic exposition induces oxidative stress in anterior pituitary gland |
title |
In vivo and in vitro arsenic exposition induces oxidative stress in anterior pituitary gland |
spellingShingle |
In vivo and in vitro arsenic exposition induces oxidative stress in anterior pituitary gland Ronchetti, Sonia Alejandra Arsenic Oxidative Stress Apoptosis Anterior Pituitary Cells |
title_short |
In vivo and in vitro arsenic exposition induces oxidative stress in anterior pituitary gland |
title_full |
In vivo and in vitro arsenic exposition induces oxidative stress in anterior pituitary gland |
title_fullStr |
In vivo and in vitro arsenic exposition induces oxidative stress in anterior pituitary gland |
title_full_unstemmed |
In vivo and in vitro arsenic exposition induces oxidative stress in anterior pituitary gland |
title_sort |
In vivo and in vitro arsenic exposition induces oxidative stress in anterior pituitary gland |
dc.creator.none.fl_str_mv |
Ronchetti, Sonia Alejandra Bianchi, Maria Silvia Duvilanski, Beatriz Haydee Cabilla, Jimena Paula |
author |
Ronchetti, Sonia Alejandra |
author_facet |
Ronchetti, Sonia Alejandra Bianchi, Maria Silvia Duvilanski, Beatriz Haydee Cabilla, Jimena Paula |
author_role |
author |
author2 |
Bianchi, Maria Silvia Duvilanski, Beatriz Haydee Cabilla, Jimena Paula |
author2_role |
author author author |
dc.subject.none.fl_str_mv |
Arsenic Oxidative Stress Apoptosis Anterior Pituitary Cells |
topic |
Arsenic Oxidative Stress Apoptosis Anterior Pituitary Cells |
purl_subject.fl_str_mv |
https://purl.org/becyt/ford/3.1 https://purl.org/becyt/ford/3 |
dc.description.none.fl_txt_mv |
Inorganic arsenic (iAs) is at the top of toxic metalloids. Inorganic arsenic-contaminated water consumption is one of the greatest environmental health threats worldwide. Human iAs exposure has been associated with cancers of several organs, neurological disorders, and reproductive problems. Nevertheless, there are no reports describing how iAs affects the anterior pituitary gland. The aim of this study was to investigate the mechanisms involved in iAs-mediated anterior pituitary toxicity both in vivo and in vitro. We showed that iAs administration (from 5 to 100 ppm) to male rats through drinking water increased messenger RNA expression of several oxidative stress-responsive genes in the anterior pituitary gland. Serum prolactin levels diminished, whereasluteinizing hormone (LH) levels were only affected at the higher dose tested. In anterior pituitary cells in culture, 25 micromol/L iAssignificantly decreased prolactin release in a time-dependent fashion, whereas LH levels remained unaltered. Cell viability was significantly reduced mainly by apoptosis evidenced by morphological and phosphatidylserine externalization studies. This process is characterized by early depolarization of mitochondrial membrane potential and increased levels of reactive oxygen species. Expression of some key oxidative stress-responsive genes, such as heme oxygenase-1 and metallothionein-1, was also stimulated by iAs exposure. The antioxidant N-acetyl cysteine prevented iAs-induced effects on the expression of oxidative stress markers, prolactin release, and apoptosis. In summary, the present work demonstrates for the first time that iAs reduces prolactin releaseboth in vivo and in vitro and induces apoptosis in anterior pituitary cells, possibly resulting from imbalanced cellular redox status. Fil: Ronchetti, Sonia Alejandra. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Houssay. Instituto de Investigaciones Biomédicas. Universidad de Buenos Aires. Facultad de Medicina. Instituto de Investigaciones Biomédicas; Argentina Fil: Bianchi, Maria Silvia. Consejo Nacional de Investigaciones Científicas y Técnicas. Instituto de Biología y Medicina Experimental. Fundación de Instituto de Biología y Medicina Experimental. Instituto de Biología y Medicina Experimental; Argentina Fil: Duvilanski, Beatriz Haydee. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Houssay. Instituto de Investigaciones Biomédicas. Universidad de Buenos Aires. Facultad de Medicina. Instituto de Investigaciones Biomédicas; Argentina Fil: Cabilla, Jimena Paula. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Houssay. Instituto de Investigaciones Biomédicas. Universidad de Buenos Aires. Facultad de Medicina. Instituto de Investigaciones Biomédicas; Argentina |
description |
Inorganic arsenic (iAs) is at the top of toxic metalloids. Inorganic arsenic-contaminated water consumption is one of the greatest environmental health threats worldwide. Human iAs exposure has been associated with cancers of several organs, neurological disorders, and reproductive problems. Nevertheless, there are no reports describing how iAs affects the anterior pituitary gland. The aim of this study was to investigate the mechanisms involved in iAs-mediated anterior pituitary toxicity both in vivo and in vitro. We showed that iAs administration (from 5 to 100 ppm) to male rats through drinking water increased messenger RNA expression of several oxidative stress-responsive genes in the anterior pituitary gland. Serum prolactin levels diminished, whereasluteinizing hormone (LH) levels were only affected at the higher dose tested. In anterior pituitary cells in culture, 25 micromol/L iAssignificantly decreased prolactin release in a time-dependent fashion, whereas LH levels remained unaltered. Cell viability was significantly reduced mainly by apoptosis evidenced by morphological and phosphatidylserine externalization studies. This process is characterized by early depolarization of mitochondrial membrane potential and increased levels of reactive oxygen species. Expression of some key oxidative stress-responsive genes, such as heme oxygenase-1 and metallothionein-1, was also stimulated by iAs exposure. The antioxidant N-acetyl cysteine prevented iAs-induced effects on the expression of oxidative stress markers, prolactin release, and apoptosis. In summary, the present work demonstrates for the first time that iAs reduces prolactin releaseboth in vivo and in vitro and induces apoptosis in anterior pituitary cells, possibly resulting from imbalanced cellular redox status. |
publishDate |
2016 |
dc.date.none.fl_str_mv |
2016-04 |
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/11336/23454 Ronchetti, Sonia Alejandra; Bianchi, Maria Silvia; Duvilanski, Beatriz Haydee; Cabilla, Jimena Paula; In vivo and in vitro arsenic exposition induces oxidative stress in anterior pituitary gland; Sage Publications; International Journal Of Toxicology; 35; 4; 4-2016; 463-475 1091-5818 1092-874X CONICET Digital CONICET |
url |
http://hdl.handle.net/11336/23454 |
identifier_str_mv |
Ronchetti, Sonia Alejandra; Bianchi, Maria Silvia; Duvilanski, Beatriz Haydee; Cabilla, Jimena Paula; In vivo and in vitro arsenic exposition induces oxidative stress in anterior pituitary gland; Sage Publications; International Journal Of Toxicology; 35; 4; 4-2016; 463-475 1091-5818 1092-874X 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://journals.sagepub.com/doi/abs/10.1177/1091581816645797 info:eu-repo/semantics/altIdentifier/doi/10.1177/1091581816645797 info:eu-repo/semantics/altIdentifier/pmid/27151894 |
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 application/pdf |
dc.publisher.none.fl_str_mv |
Sage Publications |
publisher.none.fl_str_mv |
Sage Publications |
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reponame:CONICET Digital (CONICET) instname:Consejo Nacional de Investigaciones Científicas y Técnicas |
reponame_str |
CONICET Digital (CONICET) |
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CONICET Digital (CONICET) |
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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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13.13397 |