Ultrastructural changes in the follicular epithelium of Ceratophrys cranwelli previtellogenic oocytes

Autores
Villecco, E.I.; Monaco, Maria Eugenia; Sanchez, Sara Serafina del V.
Año de publicación
2007
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
In this work we carried out ultrastructural, autoradiographic and biochemical analyses of the follicular epithelium during C. cranwelli previtellogenesis. This study revealed that the follicular epithelium in early previtellogenesis is constituted of a single layer of squamous homogeneous cells. During midprevitellogenesis two types of cells develop: dark cells and clear cells. The follicular dark cells are actively involved in the synthesis of RNA, which is transferred to the oocyte through the interface. In late previtellogenesis the dark cells show apoptotic characteristics such as chromatin condensation, DNA fragmentation and cytoplasm shrinkage. This process forms apoptotic bodies that seem to be engulfed by the oocyte. Our results show evidence that, during mid- and late C. cranwelli previtellogenesis, the follicular epithelium undergoes remodelling processes interacting with the oocyte.
Fil: Villecco, E.I.. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Tucumán. Instituto Superior de Investigaciones Biológicas. Universidad Nacional de Tucumán. Instituto Superior de Investigaciones Biológicas; Argentina
Fil: Monaco, Maria Eugenia. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Tucumán. Instituto Superior de Investigaciones Biológicas. Universidad Nacional de Tucumán. Instituto Superior de Investigaciones Biológicas; Argentina
Fil: Sanchez, Sara Serafina del V.. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Tucumán. Instituto Superior de Investigaciones Biológicas. Universidad Nacional de Tucumán. Instituto Superior de Investigaciones Biológicas; Argentina
Materia
AMPHIBIAN
APOPTOSIS
FOLLICULAR CELLS
PREVITELLOGENIC OOCYTE
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:11336/95285
Acceder
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network_name_str CONICET Digital (CONICET)
spelling Ultrastructural changes in the follicular epithelium of Ceratophrys cranwelli previtellogenic oocytesVillecco, E.I.Monaco, Maria EugeniaSanchez, Sara Serafina del V.AMPHIBIANAPOPTOSISFOLLICULAR CELLSPREVITELLOGENIC OOCYTEhttps://purl.org/becyt/ford/1.6https://purl.org/becyt/ford/1In this work we carried out ultrastructural, autoradiographic and biochemical analyses of the follicular epithelium during C. cranwelli previtellogenesis. This study revealed that the follicular epithelium in early previtellogenesis is constituted of a single layer of squamous homogeneous cells. During midprevitellogenesis two types of cells develop: dark cells and clear cells. The follicular dark cells are actively involved in the synthesis of RNA, which is transferred to the oocyte through the interface. In late previtellogenesis the dark cells show apoptotic characteristics such as chromatin condensation, DNA fragmentation and cytoplasm shrinkage. This process forms apoptotic bodies that seem to be engulfed by the oocyte. Our results show evidence that, during mid- and late C. cranwelli previtellogenesis, the follicular epithelium undergoes remodelling processes interacting with the oocyte.Fil: Villecco, E.I.. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Tucumán. Instituto Superior de Investigaciones Biológicas. Universidad Nacional de Tucumán. Instituto Superior de Investigaciones Biológicas; ArgentinaFil: Monaco, Maria Eugenia. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Tucumán. Instituto Superior de Investigaciones Biológicas. Universidad Nacional de Tucumán. Instituto Superior de Investigaciones Biológicas; ArgentinaFil: Sanchez, Sara Serafina del V.. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Tucumán. Instituto Superior de Investigaciones Biológicas. Universidad Nacional de Tucumán. Instituto Superior de Investigaciones Biológicas; ArgentinaCambridge University Press2007-08info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/95285Villecco, E.I.; Monaco, Maria Eugenia; Sanchez, Sara Serafina del V.; Ultrastructural changes in the follicular epithelium of Ceratophrys cranwelli previtellogenic oocytes; Cambridge University Press; Zygote; 15; 3; 8-2007; 273-2830967-1994CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/doi/10.1017/S0967199407004297info:eu-repo/semantics/altIdentifier/url/https://www.cambridge.org/core/journals/zygote/article/ultrastructural-changes-in-the-follicular-epithelium-of-ceratophrys-cranwelli-previtellogenic-oocytes/F4D77A4BF812C87584191725F66B345Binfo:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-10-15T14:27:47Zoai:ri.conicet.gov.ar:11336/95285instacron: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 14:27:47.596CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv Ultrastructural changes in the follicular epithelium of Ceratophrys cranwelli previtellogenic oocytes
title Ultrastructural changes in the follicular epithelium of Ceratophrys cranwelli previtellogenic oocytes
spellingShingle Ultrastructural changes in the follicular epithelium of Ceratophrys cranwelli previtellogenic oocytes
Villecco, E.I.
AMPHIBIAN
APOPTOSIS
FOLLICULAR CELLS
PREVITELLOGENIC OOCYTE
title_short Ultrastructural changes in the follicular epithelium of Ceratophrys cranwelli previtellogenic oocytes
title_full Ultrastructural changes in the follicular epithelium of Ceratophrys cranwelli previtellogenic oocytes
title_fullStr Ultrastructural changes in the follicular epithelium of Ceratophrys cranwelli previtellogenic oocytes
title_full_unstemmed Ultrastructural changes in the follicular epithelium of Ceratophrys cranwelli previtellogenic oocytes
title_sort Ultrastructural changes in the follicular epithelium of Ceratophrys cranwelli previtellogenic oocytes
dc.creator.none.fl_str_mv Villecco, E.I.
Monaco, Maria Eugenia
Sanchez, Sara Serafina del V.
author Villecco, E.I.
author_facet Villecco, E.I.
Monaco, Maria Eugenia
Sanchez, Sara Serafina del V.
author_role author
author2 Monaco, Maria Eugenia
Sanchez, Sara Serafina del V.
author2_role author
author
dc.subject.none.fl_str_mv AMPHIBIAN
APOPTOSIS
FOLLICULAR CELLS
PREVITELLOGENIC OOCYTE
topic AMPHIBIAN
APOPTOSIS
FOLLICULAR CELLS
PREVITELLOGENIC OOCYTE
purl_subject.fl_str_mv https://purl.org/becyt/ford/1.6
https://purl.org/becyt/ford/1
dc.description.none.fl_txt_mv In this work we carried out ultrastructural, autoradiographic and biochemical analyses of the follicular epithelium during C. cranwelli previtellogenesis. This study revealed that the follicular epithelium in early previtellogenesis is constituted of a single layer of squamous homogeneous cells. During midprevitellogenesis two types of cells develop: dark cells and clear cells. The follicular dark cells are actively involved in the synthesis of RNA, which is transferred to the oocyte through the interface. In late previtellogenesis the dark cells show apoptotic characteristics such as chromatin condensation, DNA fragmentation and cytoplasm shrinkage. This process forms apoptotic bodies that seem to be engulfed by the oocyte. Our results show evidence that, during mid- and late C. cranwelli previtellogenesis, the follicular epithelium undergoes remodelling processes interacting with the oocyte.
Fil: Villecco, E.I.. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Tucumán. Instituto Superior de Investigaciones Biológicas. Universidad Nacional de Tucumán. Instituto Superior de Investigaciones Biológicas; Argentina
Fil: Monaco, Maria Eugenia. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Tucumán. Instituto Superior de Investigaciones Biológicas. Universidad Nacional de Tucumán. Instituto Superior de Investigaciones Biológicas; Argentina
Fil: Sanchez, Sara Serafina del V.. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Tucumán. Instituto Superior de Investigaciones Biológicas. Universidad Nacional de Tucumán. Instituto Superior de Investigaciones Biológicas; Argentina
description In this work we carried out ultrastructural, autoradiographic and biochemical analyses of the follicular epithelium during C. cranwelli previtellogenesis. This study revealed that the follicular epithelium in early previtellogenesis is constituted of a single layer of squamous homogeneous cells. During midprevitellogenesis two types of cells develop: dark cells and clear cells. The follicular dark cells are actively involved in the synthesis of RNA, which is transferred to the oocyte through the interface. In late previtellogenesis the dark cells show apoptotic characteristics such as chromatin condensation, DNA fragmentation and cytoplasm shrinkage. This process forms apoptotic bodies that seem to be engulfed by the oocyte. Our results show evidence that, during mid- and late C. cranwelli previtellogenesis, the follicular epithelium undergoes remodelling processes interacting with the oocyte.
publishDate 2007
dc.date.none.fl_str_mv 2007-08
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/11336/95285
Villecco, E.I.; Monaco, Maria Eugenia; Sanchez, Sara Serafina del V.; Ultrastructural changes in the follicular epithelium of Ceratophrys cranwelli previtellogenic oocytes; Cambridge University Press; Zygote; 15; 3; 8-2007; 273-283
0967-1994
CONICET Digital
CONICET
url http://hdl.handle.net/11336/95285
identifier_str_mv Villecco, E.I.; Monaco, Maria Eugenia; Sanchez, Sara Serafina del V.; Ultrastructural changes in the follicular epithelium of Ceratophrys cranwelli previtellogenic oocytes; Cambridge University Press; Zygote; 15; 3; 8-2007; 273-283
0967-1994
CONICET Digital
CONICET
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/doi/10.1017/S0967199407004297
info:eu-repo/semantics/altIdentifier/url/https://www.cambridge.org/core/journals/zygote/article/ultrastructural-changes-in-the-follicular-epithelium-of-ceratophrys-cranwelli-previtellogenic-oocytes/F4D77A4BF812C87584191725F66B345B
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
dc.publisher.none.fl_str_mv Cambridge University Press
publisher.none.fl_str_mv Cambridge University Press
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 13.22299

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