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
- Institución
- Consejo Nacional de Investigaciones Científicas y Técnicas
- OAI Identificador
- oai:ri.conicet.gov.ar:11336/159868
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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 Técnicas2025-09-03T10:07:19Zoai: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:34982025-09-03 10:07:20.22CONICET 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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1842269999221178368 |
score |
13.13397 |