Glutamate Induces Apoptosis in Anterior Pituitary Cells through Group II Metabotropic Glutamate Receptor Activation

Autores
Bottino, Maria Cecilia; Pampillón González, María Cristina; Pisera, Daniel Alberto; Jaita, Gabriela Alejandra; Duvilanski, Beatriz Haydee; Seilicovich, Adriana; Lasaga, Mercedes Isabel; Caruso, Carla Mariana
Año de publicación
2004
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
Glutamate can induce neuronal cell death by activating ionotropic glutamate receptors (iGluRs) as well as metabotropic glutamate receptors (mGluRs). In the present study, we investigated whether glutamate induces apoptosis of cultured anterior pituitary cells from female rats. Glutamate (1 mM) significantly reduced the metabolic activity of viable cells and increased the percentage of terminal deoxynucleotidyl transferasemediated deoxyuridine triphosphate nick-end labeling (TUNEL)-positive cells and caspase-3 activity in anterior pituitary cells. The inhibitory effect of glutamate on the viability of anterior pituitary cells was not observed in the presence of [2S]-α-ethylglutamic acid (0.75 mM), a specific group II mGluR antagonist. Also, (2S,1′S,2′S)-2-(carboxycyclopropyl) glycine (LCCG-I; 0.75 mM), a specific group II mGluR agonist, reduced viability and increased the percentage of TUNEL-positive anterior pituitary cells. Group I and III mGluRs and iGluRs agonists failed to modify the metabolic activity of anterior pituitary cells. Glutamate and LCCG-I increased the percentage of TUNEL-positive lactotropes and somatotropes. The subunit mGluR2/3, belonging to group II mGluR, was localized in these cell types. Glutamate increased nitric oxide (NO) synthase (NOS) activity and inducible NOS expression in anterior pituitary cells. N-methyl-L-arginine (NMMA, 0.5 mM), a NOS inhibitor, potentiated the apoptotic effect of glutamate in anterior pituitary cells, indicating that NO may restrain glutamate-induced apoptosis. Incubation of anterior pituitary cells with a cAMP analog (N6, 2′-o-dibutyryladenosine 3′, 5′-cyclic monophosphate; 1 mM) attenuated the apoptosis induced by glutamate. Glutamate and LCCG-I decreased prolactin release from anterior pituitary cells. N6, 2′-o-dibutyryladenosine 3′, 5′-cyclic monophosphate reversed the inhibitory effect of glutamate on prolactin release, but NMMA failed to modify it. Our data show that glutamate induces apoptosis of lactotropes and somatotropes through group II mGluR activation, probably by decreasing cAMP synthesis.
Fil: Bottino, Maria Cecilia. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Houssay. Instituto de Investigaciones Médicas. Universidad de Buenos Aires. Facultad de Medicina. Instituto de Investigaciones Médicas; Argentina
Fil: Pampillón González, María Cristina. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Houssay. Instituto de Investigaciones Médicas. Universidad de Buenos Aires. Facultad de Medicina. Instituto de Investigaciones Médicas; Argentina
Fil: Pisera, Daniel Alberto. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Houssay. Instituto de Investigaciones Médicas. Universidad de Buenos Aires. Facultad de Medicina. Instituto de Investigaciones Médicas; Argentina
Fil: Jaita, Gabriela Alejandra. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Houssay. Instituto de Investigaciones Médicas. Universidad de Buenos Aires. Facultad de Medicina. Instituto de Investigaciones Médicas; Argentina
Fil: Duvilanski, Beatriz Haydee. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Houssay. Instituto de Investigaciones Médicas. Universidad de Buenos Aires. Facultad de Medicina. Instituto de Investigaciones Médicas; Argentina
Fil: Seilicovich, Adriana. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Houssay. Instituto de Investigaciones Médicas. Universidad de Buenos Aires. Facultad de Medicina. Instituto de Investigaciones Médicas; Argentina
Fil: Lasaga, Mercedes Isabel. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Houssay. Instituto de Investigaciones Médicas. Universidad de Buenos Aires. Facultad de Medicina. Instituto de Investigaciones Médicas; Argentina
Fil: Caruso, Carla Mariana. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Houssay. Instituto de Investigaciones Médicas. Universidad de Buenos Aires. Facultad de Medicina. Instituto de Investigaciones Médicas; Argentina
Materia
Apoptosis
Glutamate
Anterior Pituitary Cells
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:11336/44205
Acceder
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oai_identifier_str oai:ri.conicet.gov.ar:11336/44205
network_acronym_str CONICETDig
repository_id_str 3498
network_name_str CONICET Digital (CONICET)
spelling Glutamate Induces Apoptosis in Anterior Pituitary Cells through Group II Metabotropic Glutamate Receptor ActivationBottino, Maria CeciliaPampillón González, María CristinaPisera, Daniel AlbertoJaita, Gabriela AlejandraDuvilanski, Beatriz HaydeeSeilicovich, AdrianaLasaga, Mercedes IsabelCaruso, Carla MarianaApoptosisGlutamateAnterior Pituitary Cellshttps://purl.org/becyt/ford/3.2https://purl.org/becyt/ford/3Glutamate can induce neuronal cell death by activating ionotropic glutamate receptors (iGluRs) as well as metabotropic glutamate receptors (mGluRs). In the present study, we investigated whether glutamate induces apoptosis of cultured anterior pituitary cells from female rats. Glutamate (1 mM) significantly reduced the metabolic activity of viable cells and increased the percentage of terminal deoxynucleotidyl transferasemediated deoxyuridine triphosphate nick-end labeling (TUNEL)-positive cells and caspase-3 activity in anterior pituitary cells. The inhibitory effect of glutamate on the viability of anterior pituitary cells was not observed in the presence of [2S]-α-ethylglutamic acid (0.75 mM), a specific group II mGluR antagonist. Also, (2S,1′S,2′S)-2-(carboxycyclopropyl) glycine (LCCG-I; 0.75 mM), a specific group II mGluR agonist, reduced viability and increased the percentage of TUNEL-positive anterior pituitary cells. Group I and III mGluRs and iGluRs agonists failed to modify the metabolic activity of anterior pituitary cells. Glutamate and LCCG-I increased the percentage of TUNEL-positive lactotropes and somatotropes. The subunit mGluR2/3, belonging to group II mGluR, was localized in these cell types. Glutamate increased nitric oxide (NO) synthase (NOS) activity and inducible NOS expression in anterior pituitary cells. N-methyl-L-arginine (NMMA, 0.5 mM), a NOS inhibitor, potentiated the apoptotic effect of glutamate in anterior pituitary cells, indicating that NO may restrain glutamate-induced apoptosis. Incubation of anterior pituitary cells with a cAMP analog (N6, 2′-o-dibutyryladenosine 3′, 5′-cyclic monophosphate; 1 mM) attenuated the apoptosis induced by glutamate. Glutamate and LCCG-I decreased prolactin release from anterior pituitary cells. N6, 2′-o-dibutyryladenosine 3′, 5′-cyclic monophosphate reversed the inhibitory effect of glutamate on prolactin release, but NMMA failed to modify it. Our data show that glutamate induces apoptosis of lactotropes and somatotropes through group II mGluR activation, probably by decreasing cAMP synthesis.Fil: Bottino, Maria Cecilia. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Houssay. Instituto de Investigaciones Médicas. Universidad de Buenos Aires. Facultad de Medicina. Instituto de Investigaciones Médicas; ArgentinaFil: Pampillón González, María Cristina. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Houssay. Instituto de Investigaciones Médicas. Universidad de Buenos Aires. Facultad de Medicina. Instituto de Investigaciones Médicas; ArgentinaFil: Pisera, Daniel Alberto. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Houssay. Instituto de Investigaciones Médicas. Universidad de Buenos Aires. Facultad de Medicina. Instituto de Investigaciones Médicas; ArgentinaFil: Jaita, Gabriela Alejandra. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Houssay. Instituto de Investigaciones Médicas. Universidad de Buenos Aires. Facultad de Medicina. Instituto de Investigaciones Médicas; ArgentinaFil: Duvilanski, Beatriz Haydee. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Houssay. Instituto de Investigaciones Médicas. Universidad de Buenos Aires. Facultad de Medicina. Instituto de Investigaciones Médicas; ArgentinaFil: Seilicovich, Adriana. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Houssay. Instituto de Investigaciones Médicas. Universidad de Buenos Aires. Facultad de Medicina. Instituto de Investigaciones Médicas; ArgentinaFil: Lasaga, Mercedes Isabel. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Houssay. Instituto de Investigaciones Médicas. Universidad de Buenos Aires. Facultad de Medicina. Instituto de Investigaciones Médicas; ArgentinaFil: Caruso, Carla Mariana. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Houssay. Instituto de Investigaciones Médicas. Universidad de Buenos Aires. Facultad de Medicina. Instituto de Investigaciones Médicas; ArgentinaEndocrine Society2004-10info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfapplication/pdfapplication/pdfapplication/pdfapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/44205Bottino, Maria Cecilia; Pampillón González, María Cristina; Pisera, Daniel Alberto; Jaita, Gabriela Alejandra; Duvilanski, Beatriz Haydee; et al.; Glutamate Induces Apoptosis in Anterior Pituitary Cells through Group II Metabotropic Glutamate Receptor Activation; Endocrine Society; Endocrinology; 145; 10; 10-2004; 4677-46840013-72271945-7170CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/doi/10.1210/en.2004-0550info:eu-repo/semantics/altIdentifier/url/https://academic.oup.com/endo/article/145/10/4677/2499992info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-10-15T15:15:55Zoai:ri.conicet.gov.ar:11336/44205instacron: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:34982025-10-15 15:15:56.187CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv Glutamate Induces Apoptosis in Anterior Pituitary Cells through Group II Metabotropic Glutamate Receptor Activation
title Glutamate Induces Apoptosis in Anterior Pituitary Cells through Group II Metabotropic Glutamate Receptor Activation
spellingShingle Glutamate Induces Apoptosis in Anterior Pituitary Cells through Group II Metabotropic Glutamate Receptor Activation
Bottino, Maria Cecilia
Apoptosis
Glutamate
Anterior Pituitary Cells
title_short Glutamate Induces Apoptosis in Anterior Pituitary Cells through Group II Metabotropic Glutamate Receptor Activation
title_full Glutamate Induces Apoptosis in Anterior Pituitary Cells through Group II Metabotropic Glutamate Receptor Activation
title_fullStr Glutamate Induces Apoptosis in Anterior Pituitary Cells through Group II Metabotropic Glutamate Receptor Activation
title_full_unstemmed Glutamate Induces Apoptosis in Anterior Pituitary Cells through Group II Metabotropic Glutamate Receptor Activation
title_sort Glutamate Induces Apoptosis in Anterior Pituitary Cells through Group II Metabotropic Glutamate Receptor Activation
dc.creator.none.fl_str_mv Bottino, Maria Cecilia
Pampillón González, María Cristina
Pisera, Daniel Alberto
Jaita, Gabriela Alejandra
Duvilanski, Beatriz Haydee
Seilicovich, Adriana
Lasaga, Mercedes Isabel
Caruso, Carla Mariana
author Bottino, Maria Cecilia
author_facet Bottino, Maria Cecilia
Pampillón González, María Cristina
Pisera, Daniel Alberto
Jaita, Gabriela Alejandra
Duvilanski, Beatriz Haydee
Seilicovich, Adriana
Lasaga, Mercedes Isabel
Caruso, Carla Mariana
author_role author
author2 Pampillón González, María Cristina
Pisera, Daniel Alberto
Jaita, Gabriela Alejandra
Duvilanski, Beatriz Haydee
Seilicovich, Adriana
Lasaga, Mercedes Isabel
Caruso, Carla Mariana
author2_role author
author
author
author
author
author
author
dc.subject.none.fl_str_mv Apoptosis
Glutamate
Anterior Pituitary Cells
topic Apoptosis
Glutamate
Anterior Pituitary Cells
purl_subject.fl_str_mv https://purl.org/becyt/ford/3.2
https://purl.org/becyt/ford/3
dc.description.none.fl_txt_mv Glutamate can induce neuronal cell death by activating ionotropic glutamate receptors (iGluRs) as well as metabotropic glutamate receptors (mGluRs). In the present study, we investigated whether glutamate induces apoptosis of cultured anterior pituitary cells from female rats. Glutamate (1 mM) significantly reduced the metabolic activity of viable cells and increased the percentage of terminal deoxynucleotidyl transferasemediated deoxyuridine triphosphate nick-end labeling (TUNEL)-positive cells and caspase-3 activity in anterior pituitary cells. The inhibitory effect of glutamate on the viability of anterior pituitary cells was not observed in the presence of [2S]-α-ethylglutamic acid (0.75 mM), a specific group II mGluR antagonist. Also, (2S,1′S,2′S)-2-(carboxycyclopropyl) glycine (LCCG-I; 0.75 mM), a specific group II mGluR agonist, reduced viability and increased the percentage of TUNEL-positive anterior pituitary cells. Group I and III mGluRs and iGluRs agonists failed to modify the metabolic activity of anterior pituitary cells. Glutamate and LCCG-I increased the percentage of TUNEL-positive lactotropes and somatotropes. The subunit mGluR2/3, belonging to group II mGluR, was localized in these cell types. Glutamate increased nitric oxide (NO) synthase (NOS) activity and inducible NOS expression in anterior pituitary cells. N-methyl-L-arginine (NMMA, 0.5 mM), a NOS inhibitor, potentiated the apoptotic effect of glutamate in anterior pituitary cells, indicating that NO may restrain glutamate-induced apoptosis. Incubation of anterior pituitary cells with a cAMP analog (N6, 2′-o-dibutyryladenosine 3′, 5′-cyclic monophosphate; 1 mM) attenuated the apoptosis induced by glutamate. Glutamate and LCCG-I decreased prolactin release from anterior pituitary cells. N6, 2′-o-dibutyryladenosine 3′, 5′-cyclic monophosphate reversed the inhibitory effect of glutamate on prolactin release, but NMMA failed to modify it. Our data show that glutamate induces apoptosis of lactotropes and somatotropes through group II mGluR activation, probably by decreasing cAMP synthesis.
Fil: Bottino, Maria Cecilia. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Houssay. Instituto de Investigaciones Médicas. Universidad de Buenos Aires. Facultad de Medicina. Instituto de Investigaciones Médicas; Argentina
Fil: Pampillón González, María Cristina. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Houssay. Instituto de Investigaciones Médicas. Universidad de Buenos Aires. Facultad de Medicina. Instituto de Investigaciones Médicas; Argentina
Fil: Pisera, Daniel Alberto. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Houssay. Instituto de Investigaciones Médicas. Universidad de Buenos Aires. Facultad de Medicina. Instituto de Investigaciones Médicas; Argentina
Fil: Jaita, Gabriela Alejandra. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Houssay. Instituto de Investigaciones Médicas. Universidad de Buenos Aires. Facultad de Medicina. Instituto de Investigaciones Médicas; Argentina
Fil: Duvilanski, Beatriz Haydee. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Houssay. Instituto de Investigaciones Médicas. Universidad de Buenos Aires. Facultad de Medicina. Instituto de Investigaciones Médicas; Argentina
Fil: Seilicovich, Adriana. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Houssay. Instituto de Investigaciones Médicas. Universidad de Buenos Aires. Facultad de Medicina. Instituto de Investigaciones Médicas; Argentina
Fil: Lasaga, Mercedes Isabel. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Houssay. Instituto de Investigaciones Médicas. Universidad de Buenos Aires. Facultad de Medicina. Instituto de Investigaciones Médicas; Argentina
Fil: Caruso, Carla Mariana. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Houssay. Instituto de Investigaciones Médicas. Universidad de Buenos Aires. Facultad de Medicina. Instituto de Investigaciones Médicas; Argentina
description Glutamate can induce neuronal cell death by activating ionotropic glutamate receptors (iGluRs) as well as metabotropic glutamate receptors (mGluRs). In the present study, we investigated whether glutamate induces apoptosis of cultured anterior pituitary cells from female rats. Glutamate (1 mM) significantly reduced the metabolic activity of viable cells and increased the percentage of terminal deoxynucleotidyl transferasemediated deoxyuridine triphosphate nick-end labeling (TUNEL)-positive cells and caspase-3 activity in anterior pituitary cells. The inhibitory effect of glutamate on the viability of anterior pituitary cells was not observed in the presence of [2S]-α-ethylglutamic acid (0.75 mM), a specific group II mGluR antagonist. Also, (2S,1′S,2′S)-2-(carboxycyclopropyl) glycine (LCCG-I; 0.75 mM), a specific group II mGluR agonist, reduced viability and increased the percentage of TUNEL-positive anterior pituitary cells. Group I and III mGluRs and iGluRs agonists failed to modify the metabolic activity of anterior pituitary cells. Glutamate and LCCG-I increased the percentage of TUNEL-positive lactotropes and somatotropes. The subunit mGluR2/3, belonging to group II mGluR, was localized in these cell types. Glutamate increased nitric oxide (NO) synthase (NOS) activity and inducible NOS expression in anterior pituitary cells. N-methyl-L-arginine (NMMA, 0.5 mM), a NOS inhibitor, potentiated the apoptotic effect of glutamate in anterior pituitary cells, indicating that NO may restrain glutamate-induced apoptosis. Incubation of anterior pituitary cells with a cAMP analog (N6, 2′-o-dibutyryladenosine 3′, 5′-cyclic monophosphate; 1 mM) attenuated the apoptosis induced by glutamate. Glutamate and LCCG-I decreased prolactin release from anterior pituitary cells. N6, 2′-o-dibutyryladenosine 3′, 5′-cyclic monophosphate reversed the inhibitory effect of glutamate on prolactin release, but NMMA failed to modify it. Our data show that glutamate induces apoptosis of lactotropes and somatotropes through group II mGluR activation, probably by decreasing cAMP synthesis.
publishDate 2004
dc.date.none.fl_str_mv 2004-10
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/11336/44205
Bottino, Maria Cecilia; Pampillón González, María Cristina; Pisera, Daniel Alberto; Jaita, Gabriela Alejandra; Duvilanski, Beatriz Haydee; et al.; Glutamate Induces Apoptosis in Anterior Pituitary Cells through Group II Metabotropic Glutamate Receptor Activation; Endocrine Society; Endocrinology; 145; 10; 10-2004; 4677-4684
0013-7227
1945-7170
CONICET Digital
CONICET
url http://hdl.handle.net/11336/44205
identifier_str_mv Bottino, Maria Cecilia; Pampillón González, María Cristina; Pisera, Daniel Alberto; Jaita, Gabriela Alejandra; Duvilanski, Beatriz Haydee; et al.; Glutamate Induces Apoptosis in Anterior Pituitary Cells through Group II Metabotropic Glutamate Receptor Activation; Endocrine Society; Endocrinology; 145; 10; 10-2004; 4677-4684
0013-7227
1945-7170
CONICET Digital
CONICET
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/doi/10.1210/en.2004-0550
info:eu-repo/semantics/altIdentifier/url/https://academic.oup.com/endo/article/145/10/4677/2499992
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
application/pdf
dc.publisher.none.fl_str_mv Endocrine Society
publisher.none.fl_str_mv Endocrine Society
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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