Ultrastructural and immunocytochemical studies of the Viscacha (Lagostomus maximus maximus) pituitary pars tuberalis

Autores
Perez Romera, Edith; Mohamed, Fabian Heber; Filippa, Veronica Palmira; Fogal, Teresa Hilda; Dominguez, Susana; Scardapane, Luis Antonio; Piezzi, Ramon Salvador
Año de publicación
2005
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
The hypophyseal pars tuberalis (PT) has been the focus of numerous studies attempting to understand its physiological role in the reproductive regulation and modulation by the neuroendocrine system. Ultrastructural studies of the PT in a number of species have shown that it consists of a well-developed hypophyseal area with important secretory activity, demonstrated by the abundance of secretory granules in the cytoplasm and the marked blood irrigation. This article describes ultrastructural and immunocytochemical aspects of the PT in viscachas captured in their habitat. The cell types identified were PT-specific cells, agranulated cells, and Folliculostellate cells. PT-specific cells are divided into type I and II. Type I cells have cytoplasms with secretory granules of 150?500 nm diameter. The secretory granules of type II PT-specific cells are 65?200 nm in diameter. Both cellular types exhibit numerous nerve endings on the plasmatic membranes. Agranulated cells exhibit nuclei with lax chromatin, mitochondria, phagosomes, scarce Golgi complex, and rough endoplasmic reticulum. Folliculostellate cells exhibit an irregularly shaped and moderately condensed nucleus. All the described cellular types exhibit deposits of cytoplasmic glycogen. The immunocytochemical study revealed the presence of cells immunostained for LH- and FSH- in the PT caudal zone. ACTH was only detected in the zona tuberalis. No staining was observed with antiprolactin, anti-TSH-, and anti-GH sera. Folliculostellate cells exhibited staining with anti-S-100. The results demonstrate that the viscacha PT is a hypophyseal zone with specific cellular types, which exhibits evident secretory activity. The presence of nerve endings suggests neural control of the function of PT cells.
Fil: Perez Romera, Edith. Universidad Nacional de San Luis; Argentina
Fil: Mohamed, Fabian Heber. Universidad Nacional de San Luis; Argentina
Fil: Filippa, Veronica Palmira. Universidad Nacional de San Luis; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Mendoza; Argentina
Fil: Fogal, Teresa Hilda. Consejo Nacional de Investigaciones Cientificas y Tecnicas. Centro Cientifico Tecnologico Conicet - Mendoza. Instituto de Histologia y Embriologia de Mendoza Dr. Mario H. Burgos. Grupo Vinculado de Investigacion y Desarrollo Biotecnologico Aplicado Al Diagnostico Al Ihem | Universidad Nacional de Cuyo. Facultad de Ciencias Medicas. Instituto de Histologia y Embriologia de Mendoza Dr. Mario H. Burgos. Grupo Vinculado de Investigacion y Desarrollo Biotecnologico Aplicado Al Diagnostico Al Ihem.; Argentina
Fil: Dominguez, Susana. Universidad Nacional de San Luis; Argentina
Fil: Scardapane, Luis Antonio. Universidad Nacional de San Luis; Argentina
Fil: Piezzi, Ramon Salvador. Consejo Nacional de Investigaciones Cientificas y Tecnicas. Centro Cientifico Tecnologico Conicet - Mendoza. Instituto de Histologia y Embriologia de Mendoza Dr. Mario H. Burgos. Grupo Vinculado de Investigacion y Desarrollo Biotecnologico Aplicado Al Diagnostico Al Ihem | Universidad Nacional de Cuyo. Facultad de Ciencias Medicas. Instituto de Histologia y Embriologia de Mendoza Dr. Mario H. Burgos. Grupo Vinculado de Investigacion y Desarrollo Biotecnologico Aplicado Al Diagnostico Al Ihem.; Argentina
Materia
IMMUNOCYTOCHEMISTRY
LAGOSTOMUS MAXIMUS MAXIMUS
PARS TUBERALIS
PITUITARY
ULTRASTRUCTURE
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:11336/159868
Acceder
id CONICETDig_018e5c08285979f874fb10526504ea8e
oai_identifier_str oai:ri.conicet.gov.ar:11336/159868
network_acronym_str CONICETDig
repository_id_str 3498
network_name_str CONICET Digital (CONICET)
spelling Ultrastructural and immunocytochemical studies of the Viscacha (Lagostomus maximus maximus) pituitary pars tuberalisPerez Romera, EdithMohamed, Fabian HeberFilippa, Veronica PalmiraFogal, Teresa HildaDominguez, SusanaScardapane, Luis AntonioPiezzi, Ramon SalvadorIMMUNOCYTOCHEMISTRYLAGOSTOMUS MAXIMUS MAXIMUSPARS TUBERALISPITUITARYULTRASTRUCTUREhttps://purl.org/becyt/ford/1.6https://purl.org/becyt/ford/1The hypophyseal pars tuberalis (PT) has been the focus of numerous studies attempting to understand its physiological role in the reproductive regulation and modulation by the neuroendocrine system. Ultrastructural studies of the PT in a number of species have shown that it consists of a well-developed hypophyseal area with important secretory activity, demonstrated by the abundance of secretory granules in the cytoplasm and the marked blood irrigation. This article describes ultrastructural and immunocytochemical aspects of the PT in viscachas captured in their habitat. The cell types identified were PT-specific cells, agranulated cells, and Folliculostellate cells. PT-specific cells are divided into type I and II. Type I cells have cytoplasms with secretory granules of 150?500 nm diameter. The secretory granules of type II PT-specific cells are 65?200 nm in diameter. Both cellular types exhibit numerous nerve endings on the plasmatic membranes. Agranulated cells exhibit nuclei with lax chromatin, mitochondria, phagosomes, scarce Golgi complex, and rough endoplasmic reticulum. Folliculostellate cells exhibit an irregularly shaped and moderately condensed nucleus. All the described cellular types exhibit deposits of cytoplasmic glycogen. The immunocytochemical study revealed the presence of cells immunostained for LH- and FSH- in the PT caudal zone. ACTH was only detected in the zona tuberalis. No staining was observed with antiprolactin, anti-TSH-, and anti-GH sera. Folliculostellate cells exhibited staining with anti-S-100. The results demonstrate that the viscacha PT is a hypophyseal zone with specific cellular types, which exhibits evident secretory activity. The presence of nerve endings suggests neural control of the function of PT cells.Fil: Perez Romera, Edith. Universidad Nacional de San Luis; ArgentinaFil: Mohamed, Fabian Heber. Universidad Nacional de San Luis; ArgentinaFil: Filippa, Veronica Palmira. Universidad Nacional de San Luis; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Mendoza; ArgentinaFil: Fogal, Teresa Hilda. Consejo Nacional de Investigaciones Cientificas y Tecnicas. Centro Cientifico Tecnologico Conicet - Mendoza. Instituto de Histologia y Embriologia de Mendoza Dr. Mario H. Burgos. Grupo Vinculado de Investigacion y Desarrollo Biotecnologico Aplicado Al Diagnostico Al Ihem | Universidad Nacional de Cuyo. Facultad de Ciencias Medicas. Instituto de Histologia y Embriologia de Mendoza Dr. Mario H. Burgos. Grupo Vinculado de Investigacion y Desarrollo Biotecnologico Aplicado Al Diagnostico Al Ihem.; ArgentinaFil: Dominguez, Susana. Universidad Nacional de San Luis; ArgentinaFil: Scardapane, Luis Antonio. Universidad Nacional de San Luis; ArgentinaFil: Piezzi, Ramon Salvador. Consejo Nacional de Investigaciones Cientificas y Tecnicas. Centro Cientifico Tecnologico Conicet - Mendoza. Instituto de Histologia y Embriologia de Mendoza Dr. Mario H. Burgos. Grupo Vinculado de Investigacion y Desarrollo Biotecnologico Aplicado Al Diagnostico Al Ihem | Universidad Nacional de Cuyo. Facultad de Ciencias Medicas. Instituto de Histologia y Embriologia de Mendoza Dr. Mario H. Burgos. Grupo Vinculado de Investigacion y Desarrollo Biotecnologico Aplicado Al Diagnostico Al Ihem.; ArgentinaWiley-liss, div John Wiley & Sons Inc.2005-05info: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/11336/159868Perez Romera, Edith; Mohamed, Fabian Heber; Filippa, Veronica Palmira; Fogal, Teresa Hilda; Dominguez, Susana; et al.; Ultrastructural and immunocytochemical studies of the Viscacha (Lagostomus maximus maximus) pituitary pars tuberalis; Wiley-liss, div John Wiley & Sons Inc.; Anatomical Record; 284; 1; 5-2005; 431-4381552-4884CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/doi/10.1002/ar.a.20163info:eu-repo/semantics/altIdentifier/url/https://anatomypubs.onlinelibrary.wiley.com/doi/10.1002/ar.a.20163info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-09-29T10:33:07Zoai:ri.conicet.gov.ar:11336/159868instacron: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:34982025-09-29 10:33:08.049CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv Ultrastructural and immunocytochemical studies of the Viscacha (Lagostomus maximus maximus) pituitary pars tuberalis
title Ultrastructural and immunocytochemical studies of the Viscacha (Lagostomus maximus maximus) pituitary pars tuberalis
spellingShingle Ultrastructural and immunocytochemical studies of the Viscacha (Lagostomus maximus maximus) pituitary pars tuberalis
Perez Romera, Edith
IMMUNOCYTOCHEMISTRY
LAGOSTOMUS MAXIMUS MAXIMUS
PARS TUBERALIS
PITUITARY
ULTRASTRUCTURE
title_short Ultrastructural and immunocytochemical studies of the Viscacha (Lagostomus maximus maximus) pituitary pars tuberalis
title_full Ultrastructural and immunocytochemical studies of the Viscacha (Lagostomus maximus maximus) pituitary pars tuberalis
title_fullStr Ultrastructural and immunocytochemical studies of the Viscacha (Lagostomus maximus maximus) pituitary pars tuberalis
title_full_unstemmed Ultrastructural and immunocytochemical studies of the Viscacha (Lagostomus maximus maximus) pituitary pars tuberalis
title_sort Ultrastructural and immunocytochemical studies of the Viscacha (Lagostomus maximus maximus) pituitary pars tuberalis
dc.creator.none.fl_str_mv Perez Romera, Edith
Mohamed, Fabian Heber
Filippa, Veronica Palmira
Fogal, Teresa Hilda
Dominguez, Susana
Scardapane, Luis Antonio
Piezzi, Ramon Salvador
author Perez Romera, Edith
author_facet Perez Romera, Edith
Mohamed, Fabian Heber
Filippa, Veronica Palmira
Fogal, Teresa Hilda
Dominguez, Susana
Scardapane, Luis Antonio
Piezzi, Ramon Salvador
author_role author
author2 Mohamed, Fabian Heber
Filippa, Veronica Palmira
Fogal, Teresa Hilda
Dominguez, Susana
Scardapane, Luis Antonio
Piezzi, Ramon Salvador
author2_role author
author
author
author
author
author
dc.subject.none.fl_str_mv IMMUNOCYTOCHEMISTRY
LAGOSTOMUS MAXIMUS MAXIMUS
PARS TUBERALIS
PITUITARY
ULTRASTRUCTURE
topic IMMUNOCYTOCHEMISTRY
LAGOSTOMUS MAXIMUS MAXIMUS
PARS TUBERALIS
PITUITARY
ULTRASTRUCTURE
purl_subject.fl_str_mv https://purl.org/becyt/ford/1.6
https://purl.org/becyt/ford/1
dc.description.none.fl_txt_mv The hypophyseal pars tuberalis (PT) has been the focus of numerous studies attempting to understand its physiological role in the reproductive regulation and modulation by the neuroendocrine system. Ultrastructural studies of the PT in a number of species have shown that it consists of a well-developed hypophyseal area with important secretory activity, demonstrated by the abundance of secretory granules in the cytoplasm and the marked blood irrigation. This article describes ultrastructural and immunocytochemical aspects of the PT in viscachas captured in their habitat. The cell types identified were PT-specific cells, agranulated cells, and Folliculostellate cells. PT-specific cells are divided into type I and II. Type I cells have cytoplasms with secretory granules of 150?500 nm diameter. The secretory granules of type II PT-specific cells are 65?200 nm in diameter. Both cellular types exhibit numerous nerve endings on the plasmatic membranes. Agranulated cells exhibit nuclei with lax chromatin, mitochondria, phagosomes, scarce Golgi complex, and rough endoplasmic reticulum. Folliculostellate cells exhibit an irregularly shaped and moderately condensed nucleus. All the described cellular types exhibit deposits of cytoplasmic glycogen. The immunocytochemical study revealed the presence of cells immunostained for LH- and FSH- in the PT caudal zone. ACTH was only detected in the zona tuberalis. No staining was observed with antiprolactin, anti-TSH-, and anti-GH sera. Folliculostellate cells exhibited staining with anti-S-100. The results demonstrate that the viscacha PT is a hypophyseal zone with specific cellular types, which exhibits evident secretory activity. The presence of nerve endings suggests neural control of the function of PT cells.
Fil: Perez Romera, Edith. Universidad Nacional de San Luis; Argentina
Fil: Mohamed, Fabian Heber. Universidad Nacional de San Luis; Argentina
Fil: Filippa, Veronica Palmira. Universidad Nacional de San Luis; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Mendoza; Argentina
Fil: Fogal, Teresa Hilda. Consejo Nacional de Investigaciones Cientificas y Tecnicas. Centro Cientifico Tecnologico Conicet - Mendoza. Instituto de Histologia y Embriologia de Mendoza Dr. Mario H. Burgos. Grupo Vinculado de Investigacion y Desarrollo Biotecnologico Aplicado Al Diagnostico Al Ihem | Universidad Nacional de Cuyo. Facultad de Ciencias Medicas. Instituto de Histologia y Embriologia de Mendoza Dr. Mario H. Burgos. Grupo Vinculado de Investigacion y Desarrollo Biotecnologico Aplicado Al Diagnostico Al Ihem.; Argentina
Fil: Dominguez, Susana. Universidad Nacional de San Luis; Argentina
Fil: Scardapane, Luis Antonio. Universidad Nacional de San Luis; Argentina
Fil: Piezzi, Ramon Salvador. Consejo Nacional de Investigaciones Cientificas y Tecnicas. Centro Cientifico Tecnologico Conicet - Mendoza. Instituto de Histologia y Embriologia de Mendoza Dr. Mario H. Burgos. Grupo Vinculado de Investigacion y Desarrollo Biotecnologico Aplicado Al Diagnostico Al Ihem | Universidad Nacional de Cuyo. Facultad de Ciencias Medicas. Instituto de Histologia y Embriologia de Mendoza Dr. Mario H. Burgos. Grupo Vinculado de Investigacion y Desarrollo Biotecnologico Aplicado Al Diagnostico Al Ihem.; Argentina
description The hypophyseal pars tuberalis (PT) has been the focus of numerous studies attempting to understand its physiological role in the reproductive regulation and modulation by the neuroendocrine system. Ultrastructural studies of the PT in a number of species have shown that it consists of a well-developed hypophyseal area with important secretory activity, demonstrated by the abundance of secretory granules in the cytoplasm and the marked blood irrigation. This article describes ultrastructural and immunocytochemical aspects of the PT in viscachas captured in their habitat. The cell types identified were PT-specific cells, agranulated cells, and Folliculostellate cells. PT-specific cells are divided into type I and II. Type I cells have cytoplasms with secretory granules of 150?500 nm diameter. The secretory granules of type II PT-specific cells are 65?200 nm in diameter. Both cellular types exhibit numerous nerve endings on the plasmatic membranes. Agranulated cells exhibit nuclei with lax chromatin, mitochondria, phagosomes, scarce Golgi complex, and rough endoplasmic reticulum. Folliculostellate cells exhibit an irregularly shaped and moderately condensed nucleus. All the described cellular types exhibit deposits of cytoplasmic glycogen. The immunocytochemical study revealed the presence of cells immunostained for LH- and FSH- in the PT caudal zone. ACTH was only detected in the zona tuberalis. No staining was observed with antiprolactin, anti-TSH-, and anti-GH sera. Folliculostellate cells exhibited staining with anti-S-100. The results demonstrate that the viscacha PT is a hypophyseal zone with specific cellular types, which exhibits evident secretory activity. The presence of nerve endings suggests neural control of the function of PT cells.
publishDate 2005
dc.date.none.fl_str_mv 2005-05
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/11336/159868
Perez Romera, Edith; Mohamed, Fabian Heber; Filippa, Veronica Palmira; Fogal, Teresa Hilda; Dominguez, Susana; et al.; Ultrastructural and immunocytochemical studies of the Viscacha (Lagostomus maximus maximus) pituitary pars tuberalis; Wiley-liss, div John Wiley & Sons Inc.; Anatomical Record; 284; 1; 5-2005; 431-438
1552-4884
CONICET Digital
CONICET
url http://hdl.handle.net/11336/159868
identifier_str_mv Perez Romera, Edith; Mohamed, Fabian Heber; Filippa, Veronica Palmira; Fogal, Teresa Hilda; Dominguez, Susana; et al.; Ultrastructural and immunocytochemical studies of the Viscacha (Lagostomus maximus maximus) pituitary pars tuberalis; Wiley-liss, div John Wiley & Sons Inc.; Anatomical Record; 284; 1; 5-2005; 431-438
1552-4884
CONICET Digital
CONICET
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/doi/10.1002/ar.a.20163
info:eu-repo/semantics/altIdentifier/url/https://anatomypubs.onlinelibrary.wiley.com/doi/10.1002/ar.a.20163
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-liss, div John Wiley & Sons Inc.
publisher.none.fl_str_mv Wiley-liss, div John Wiley & Sons Inc.
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 13.070432

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