The fetomaternal interface in the placenta of three species of armadillos (Eutheria, Xenarthra, Dasypodidae)

Autores
Barbeito, Claudio Gustavo; Rezende, Lorenna Cardoso; Favaron, Phelipe Oliveira; Mess, Andrea Maria; Miglino, Maria Angélica
Año de publicación
2012
Idioma
español castellano
Tipo de recurso
artículo
Estado
versión publicada
Descripción
Background: Placental characters vary among Xenarthra, one of four supraordinal clades of Eutheria. Armadillos are known for villous, haemochorial placentas similar to humans. Only the nine-banded armadillo has been well studied so far. Methods: Placentas of three species of armadillos were investigated by means of histology, immunohistochemistry including proliferation marker, and transmission and scanning electron microscopy. Results: The gross anatomy differed: Euphractus sexcinctus and Chaetophractus villosus had extended, zonary placentas, whereas Chaetophractus vellerosus had a disk. All taxa had complex villous areas within the maternal blood sinuses of the endometrium. Immunohistochemistry indicated the validity of former interpretations that the endothelium of the sinuses was largely intact. Tips of the villi and the columns entering the maternal tissue possessed trophoblast cell clusters with proliferation activity. Elsewhere, the feto-maternal barrier was syncytial haemochorial with fetal vessels near the surface. Conclusions: Differences among armadillos occurred in regard to the extension of the placenta, whereas the fine structure was similar. Parallels to the human suggest that armadillos are likely to be useful animal models for human placentation
Facultad de Ciencias Veterinarias
Materia
Ciencias Veterinarias
Armadillos
Feto
Nivel de accesibilidad
acceso abierto
Condiciones de uso
http://creativecommons.org/licenses/by/2.5/ar/
Repositorio
SEDICI (UNLP)
Institución
Universidad Nacional de La Plata
OAI Identificador
oai:sedici.unlp.edu.ar:10915/29372
Acceder
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network_name_str SEDICI (UNLP)
spelling The fetomaternal interface in the placenta of three species of armadillos (Eutheria, Xenarthra, Dasypodidae)Barbeito, Claudio GustavoRezende, Lorenna CardosoFavaron, Phelipe OliveiraMess, Andrea MariaMiglino, Maria AngélicaCiencias VeterinariasArmadillosFetoBackground: Placental characters vary among Xenarthra, one of four supraordinal clades of Eutheria. Armadillos are known for villous, haemochorial placentas similar to humans. Only the nine-banded armadillo has been well studied so far. Methods: Placentas of three species of armadillos were investigated by means of histology, immunohistochemistry including proliferation marker, and transmission and scanning electron microscopy. Results: The gross anatomy differed: Euphractus sexcinctus and Chaetophractus villosus had extended, zonary placentas, whereas Chaetophractus vellerosus had a disk. All taxa had complex villous areas within the maternal blood sinuses of the endometrium. Immunohistochemistry indicated the validity of former interpretations that the endothelium of the sinuses was largely intact. Tips of the villi and the columns entering the maternal tissue possessed trophoblast cell clusters with proliferation activity. Elsewhere, the feto-maternal barrier was syncytial haemochorial with fetal vessels near the surface. Conclusions: Differences among armadillos occurred in regard to the extension of the placenta, whereas the fine structure was similar. Parallels to the human suggest that armadillos are likely to be useful animal models for human placentationFacultad de Ciencias Veterinarias2012-05info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionArticulohttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfhttp://sedici.unlp.edu.ar/handle/10915/29372spainfo:eu-repo/semantics/altIdentifier/url/http://www.rbej.com/content/pdf/1477-7827-10-38.pdfinfo:eu-repo/semantics/altIdentifier/issn/1477-7827info:eu-repo/semantics/altIdentifier/pmid/22559925info:eu-repo/semantics/altIdentifier/doi/10.1186/1477-7827-10-38info:eu-repo/semantics/openAccesshttp://creativecommons.org/licenses/by/2.5/ar/Creative Commons Attribution 2.5 Argentina (CC BY 2.5)reponame:SEDICI (UNLP)instname:Universidad Nacional de La Platainstacron:UNLP2025-10-15T10:49:45Zoai:sedici.unlp.edu.ar:10915/29372Institucionalhttp://sedici.unlp.edu.ar/Universidad públicaNo correspondehttp://sedici.unlp.edu.ar/oai/snrdalira@sedici.unlp.edu.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:13292025-10-15 10:49:46.255SEDICI (UNLP) - Universidad Nacional de La Platafalse
dc.title.none.fl_str_mv The fetomaternal interface in the placenta of three species of armadillos (Eutheria, Xenarthra, Dasypodidae)
title The fetomaternal interface in the placenta of three species of armadillos (Eutheria, Xenarthra, Dasypodidae)
spellingShingle The fetomaternal interface in the placenta of three species of armadillos (Eutheria, Xenarthra, Dasypodidae)
Barbeito, Claudio Gustavo
Ciencias Veterinarias
Armadillos
Feto
title_short The fetomaternal interface in the placenta of three species of armadillos (Eutheria, Xenarthra, Dasypodidae)
title_full The fetomaternal interface in the placenta of three species of armadillos (Eutheria, Xenarthra, Dasypodidae)
title_fullStr The fetomaternal interface in the placenta of three species of armadillos (Eutheria, Xenarthra, Dasypodidae)
title_full_unstemmed The fetomaternal interface in the placenta of three species of armadillos (Eutheria, Xenarthra, Dasypodidae)
title_sort The fetomaternal interface in the placenta of three species of armadillos (Eutheria, Xenarthra, Dasypodidae)
dc.creator.none.fl_str_mv Barbeito, Claudio Gustavo
Rezende, Lorenna Cardoso
Favaron, Phelipe Oliveira
Mess, Andrea Maria
Miglino, Maria Angélica
author Barbeito, Claudio Gustavo
author_facet Barbeito, Claudio Gustavo
Rezende, Lorenna Cardoso
Favaron, Phelipe Oliveira
Mess, Andrea Maria
Miglino, Maria Angélica
author_role author
author2 Rezende, Lorenna Cardoso
Favaron, Phelipe Oliveira
Mess, Andrea Maria
Miglino, Maria Angélica
author2_role author
author
author
author
dc.subject.none.fl_str_mv Ciencias Veterinarias
Armadillos
Feto
topic Ciencias Veterinarias
Armadillos
Feto
dc.description.none.fl_txt_mv Background: Placental characters vary among Xenarthra, one of four supraordinal clades of Eutheria. Armadillos are known for villous, haemochorial placentas similar to humans. Only the nine-banded armadillo has been well studied so far. Methods: Placentas of three species of armadillos were investigated by means of histology, immunohistochemistry including proliferation marker, and transmission and scanning electron microscopy. Results: The gross anatomy differed: Euphractus sexcinctus and Chaetophractus villosus had extended, zonary placentas, whereas Chaetophractus vellerosus had a disk. All taxa had complex villous areas within the maternal blood sinuses of the endometrium. Immunohistochemistry indicated the validity of former interpretations that the endothelium of the sinuses was largely intact. Tips of the villi and the columns entering the maternal tissue possessed trophoblast cell clusters with proliferation activity. Elsewhere, the feto-maternal barrier was syncytial haemochorial with fetal vessels near the surface. Conclusions: Differences among armadillos occurred in regard to the extension of the placenta, whereas the fine structure was similar. Parallels to the human suggest that armadillos are likely to be useful animal models for human placentation
Facultad de Ciencias Veterinarias
description Background: Placental characters vary among Xenarthra, one of four supraordinal clades of Eutheria. Armadillos are known for villous, haemochorial placentas similar to humans. Only the nine-banded armadillo has been well studied so far. Methods: Placentas of three species of armadillos were investigated by means of histology, immunohistochemistry including proliferation marker, and transmission and scanning electron microscopy. Results: The gross anatomy differed: Euphractus sexcinctus and Chaetophractus villosus had extended, zonary placentas, whereas Chaetophractus vellerosus had a disk. All taxa had complex villous areas within the maternal blood sinuses of the endometrium. Immunohistochemistry indicated the validity of former interpretations that the endothelium of the sinuses was largely intact. Tips of the villi and the columns entering the maternal tissue possessed trophoblast cell clusters with proliferation activity. Elsewhere, the feto-maternal barrier was syncytial haemochorial with fetal vessels near the surface. Conclusions: Differences among armadillos occurred in regard to the extension of the placenta, whereas the fine structure was similar. Parallels to the human suggest that armadillos are likely to be useful animal models for human placentation
publishDate 2012
dc.date.none.fl_str_mv 2012-05
dc.type.none.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
Articulo
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://sedici.unlp.edu.ar/handle/10915/29372
url http://sedici.unlp.edu.ar/handle/10915/29372
dc.language.none.fl_str_mv spa
language spa
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/url/http://www.rbej.com/content/pdf/1477-7827-10-38.pdf
info:eu-repo/semantics/altIdentifier/issn/1477-7827
info:eu-repo/semantics/altIdentifier/pmid/22559925
info:eu-repo/semantics/altIdentifier/doi/10.1186/1477-7827-10-38
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
http://creativecommons.org/licenses/by/2.5/ar/
Creative Commons Attribution 2.5 Argentina (CC BY 2.5)
eu_rights_str_mv openAccess
rights_invalid_str_mv http://creativecommons.org/licenses/by/2.5/ar/
Creative Commons Attribution 2.5 Argentina (CC BY 2.5)
dc.format.none.fl_str_mv application/pdf
dc.source.none.fl_str_mv reponame:SEDICI (UNLP)
instname:Universidad Nacional de La Plata
instacron:UNLP
reponame_str SEDICI (UNLP)
collection SEDICI (UNLP)
instname_str Universidad Nacional de La Plata
instacron_str UNLP
institution UNLP
repository.name.fl_str_mv SEDICI (UNLP) - Universidad Nacional de La Plata
repository.mail.fl_str_mv alira@sedici.unlp.edu.ar
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score 13.221938

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