Islet neogenesis-associated protein (INGAP)-positive cell mass, β-cell mass, and insulin secretion: their relationship during the fetal and neonatal periods

Autores
Madrid, Viviana Graciela; Borelli, Maria Ines; Maiztegui, Barbara; Flores, Luis Emilio; Gagliardino, Juan Jose; del Zotto, Hector Herminio
Año de publicación
2013
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
Objectives: To study the chronological appearance of pancreatic islet neogenesis–associated protein (INGAP)-positive cells and its correlation with the increase in β-cell mass and function in fetal and neonatal rats. Methods: Normal Wistar rat embryos (E) at gestational days 15, 17, and 19 (E15, E17, E19) and 7-day-old postnatal rats (P7) were humanely killed to determine body and pancreas weight; blood glucose; glucose and arginine-induced insulin secretion; real-time polymerase chain reaction of Pdx1 and Ngn3; quantitative immunomorphometric analysis of β-cell replication and apoptosis rate, cytokeratin and INGAP cell mass, and Pdx-1– and Ngn3-positive cells. Results: Body and pancreas weight increased with age (P7 > E19 > E17 > E15; P < 0.05). Neonates had higher blood glucose concentrations than embryos (P < 0.05). We recorded a simultaneous and significant age-dependent trend of increase in the number of β- and Pdx-1-positive cells, β- and cytokeratin-positive cell mass and β-cell capacity to release insulin in response to glucose and arginine, and decreased β-cell apoptotic rate. These changes closely paralleled the increase in INGAP-positive cell mass. Conclusions: These findings suggest that INGAP exerts a positive modulatory effect on β-cell mass and its secretory function in fetal and neonatal rats, thus becoming a new component in the multifactorial regulation of such processes.
Fil: Madrid, Viviana Graciela. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Cientifico Tecnológico La Plata. Centro de Endocrinologia Experimental y Aplicada (i); Argentina
Fil: Borelli, Maria Ines. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Cientifico Tecnológico La Plata. Centro de Endocrinologia Experimental y Aplicada (i); Argentina
Fil: Maiztegui, Barbara. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Cientifico Tecnológico La Plata. Centro de Endocrinologia Experimental y Aplicada (i); Argentina
Fil: Flores, Luis Emilio. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Cientifico Tecnológico La Plata. Centro de Endocrinologia Experimental y Aplicada (i); Argentina
Fil: Gagliardino, Juan Jose. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Cientifico Tecnológico La Plata. Centro de Endocrinologia Experimental y Aplicada (i); Argentina
Fil: del Zotto, Hector Herminio. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Cientifico Tecnológico La Plata. Centro de Endocrinologia Experimental y Aplicada (i); Argentina
Materia
Islet Neogenesis-Associated Protein,
Ontogenesis,
A-Cell Mass,
A-Cell Function,
A-Cell Apoptosis
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:11336/5291
Acceder
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oai_identifier_str oai:ri.conicet.gov.ar:11336/5291
network_acronym_str CONICETDig
repository_id_str 3498
network_name_str CONICET Digital (CONICET)
spelling Islet neogenesis-associated protein (INGAP)-positive cell mass, β-cell mass, and insulin secretion: their relationship during the fetal and neonatal periodsMadrid, Viviana GracielaBorelli, Maria InesMaiztegui, BarbaraFlores, Luis EmilioGagliardino, Juan Josedel Zotto, Hector HerminioIslet Neogenesis-Associated Protein,Ontogenesis,A-Cell Mass,A-Cell Function,A-Cell Apoptosishttps://purl.org/becyt/ford/3.1https://purl.org/becyt/ford/3Objectives: To study the chronological appearance of pancreatic islet neogenesis–associated protein (INGAP)-positive cells and its correlation with the increase in β-cell mass and function in fetal and neonatal rats. Methods: Normal Wistar rat embryos (E) at gestational days 15, 17, and 19 (E15, E17, E19) and 7-day-old postnatal rats (P7) were humanely killed to determine body and pancreas weight; blood glucose; glucose and arginine-induced insulin secretion; real-time polymerase chain reaction of Pdx1 and Ngn3; quantitative immunomorphometric analysis of β-cell replication and apoptosis rate, cytokeratin and INGAP cell mass, and Pdx-1– and Ngn3-positive cells. Results: Body and pancreas weight increased with age (P7 > E19 > E17 > E15; P < 0.05). Neonates had higher blood glucose concentrations than embryos (P < 0.05). We recorded a simultaneous and significant age-dependent trend of increase in the number of β- and Pdx-1-positive cells, β- and cytokeratin-positive cell mass and β-cell capacity to release insulin in response to glucose and arginine, and decreased β-cell apoptotic rate. These changes closely paralleled the increase in INGAP-positive cell mass. Conclusions: These findings suggest that INGAP exerts a positive modulatory effect on β-cell mass and its secretory function in fetal and neonatal rats, thus becoming a new component in the multifactorial regulation of such processes.Fil: Madrid, Viviana Graciela. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Cientifico Tecnológico La Plata. Centro de Endocrinologia Experimental y Aplicada (i); ArgentinaFil: Borelli, Maria Ines. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Cientifico Tecnológico La Plata. Centro de Endocrinologia Experimental y Aplicada (i); ArgentinaFil: Maiztegui, Barbara. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Cientifico Tecnológico La Plata. Centro de Endocrinologia Experimental y Aplicada (i); ArgentinaFil: Flores, Luis Emilio. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Cientifico Tecnológico La Plata. Centro de Endocrinologia Experimental y Aplicada (i); ArgentinaFil: Gagliardino, Juan Jose. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Cientifico Tecnológico La Plata. Centro de Endocrinologia Experimental y Aplicada (i); ArgentinaFil: del Zotto, Hector Herminio. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Cientifico Tecnológico La Plata. Centro de Endocrinologia Experimental y Aplicada (i); ArgentinaLippincott Williams & Wilkins2013-04info: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/11336/5291Madrid, Viviana Graciela; Borelli, Maria Ines; Maiztegui, Barbara; Flores, Luis Emilio; Gagliardino, Juan Jose; et al.; Islet neogenesis-associated protein (INGAP)-positive cell mass, β-cell mass, and insulin secretion: their relationship during the fetal and neonatal periods; Lippincott Williams & Wilkins; Pancreas; 42; 3; 4-2013; 422-4280885-3177enginfo:eu-repo/semantics/altIdentifier/url/http://journals.lww.com/pancreasjournal/Abstract/2013/04000/Islet_Neogenesis_Associated_Protein.6.aspxinfo:eu-repo/semantics/altIdentifier/doi/10.1097/MPA.0b013e318264c7bdinfo:eu-repo/semantics/altIdentifier/url/10.1097/MPA.0b013e318264c7bdinfo:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-09-29T09:53:53Zoai:ri.conicet.gov.ar:11336/5291instacron: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 09:53:53.304CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv Islet neogenesis-associated protein (INGAP)-positive cell mass, β-cell mass, and insulin secretion: their relationship during the fetal and neonatal periods
title Islet neogenesis-associated protein (INGAP)-positive cell mass, β-cell mass, and insulin secretion: their relationship during the fetal and neonatal periods
spellingShingle Islet neogenesis-associated protein (INGAP)-positive cell mass, β-cell mass, and insulin secretion: their relationship during the fetal and neonatal periods
Madrid, Viviana Graciela
Islet Neogenesis-Associated Protein,
Ontogenesis,
A-Cell Mass,
A-Cell Function,
A-Cell Apoptosis
title_short Islet neogenesis-associated protein (INGAP)-positive cell mass, β-cell mass, and insulin secretion: their relationship during the fetal and neonatal periods
title_full Islet neogenesis-associated protein (INGAP)-positive cell mass, β-cell mass, and insulin secretion: their relationship during the fetal and neonatal periods
title_fullStr Islet neogenesis-associated protein (INGAP)-positive cell mass, β-cell mass, and insulin secretion: their relationship during the fetal and neonatal periods
title_full_unstemmed Islet neogenesis-associated protein (INGAP)-positive cell mass, β-cell mass, and insulin secretion: their relationship during the fetal and neonatal periods
title_sort Islet neogenesis-associated protein (INGAP)-positive cell mass, β-cell mass, and insulin secretion: their relationship during the fetal and neonatal periods
dc.creator.none.fl_str_mv Madrid, Viviana Graciela
Borelli, Maria Ines
Maiztegui, Barbara
Flores, Luis Emilio
Gagliardino, Juan Jose
del Zotto, Hector Herminio
author Madrid, Viviana Graciela
author_facet Madrid, Viviana Graciela
Borelli, Maria Ines
Maiztegui, Barbara
Flores, Luis Emilio
Gagliardino, Juan Jose
del Zotto, Hector Herminio
author_role author
author2 Borelli, Maria Ines
Maiztegui, Barbara
Flores, Luis Emilio
Gagliardino, Juan Jose
del Zotto, Hector Herminio
author2_role author
author
author
author
author
dc.subject.none.fl_str_mv Islet Neogenesis-Associated Protein,
Ontogenesis,
A-Cell Mass,
A-Cell Function,
A-Cell Apoptosis
topic Islet Neogenesis-Associated Protein,
Ontogenesis,
A-Cell Mass,
A-Cell Function,
A-Cell Apoptosis
purl_subject.fl_str_mv https://purl.org/becyt/ford/3.1
https://purl.org/becyt/ford/3
dc.description.none.fl_txt_mv Objectives: To study the chronological appearance of pancreatic islet neogenesis–associated protein (INGAP)-positive cells and its correlation with the increase in β-cell mass and function in fetal and neonatal rats. Methods: Normal Wistar rat embryos (E) at gestational days 15, 17, and 19 (E15, E17, E19) and 7-day-old postnatal rats (P7) were humanely killed to determine body and pancreas weight; blood glucose; glucose and arginine-induced insulin secretion; real-time polymerase chain reaction of Pdx1 and Ngn3; quantitative immunomorphometric analysis of β-cell replication and apoptosis rate, cytokeratin and INGAP cell mass, and Pdx-1– and Ngn3-positive cells. Results: Body and pancreas weight increased with age (P7 > E19 > E17 > E15; P < 0.05). Neonates had higher blood glucose concentrations than embryos (P < 0.05). We recorded a simultaneous and significant age-dependent trend of increase in the number of β- and Pdx-1-positive cells, β- and cytokeratin-positive cell mass and β-cell capacity to release insulin in response to glucose and arginine, and decreased β-cell apoptotic rate. These changes closely paralleled the increase in INGAP-positive cell mass. Conclusions: These findings suggest that INGAP exerts a positive modulatory effect on β-cell mass and its secretory function in fetal and neonatal rats, thus becoming a new component in the multifactorial regulation of such processes.
Fil: Madrid, Viviana Graciela. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Cientifico Tecnológico La Plata. Centro de Endocrinologia Experimental y Aplicada (i); Argentina
Fil: Borelli, Maria Ines. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Cientifico Tecnológico La Plata. Centro de Endocrinologia Experimental y Aplicada (i); Argentina
Fil: Maiztegui, Barbara. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Cientifico Tecnológico La Plata. Centro de Endocrinologia Experimental y Aplicada (i); Argentina
Fil: Flores, Luis Emilio. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Cientifico Tecnológico La Plata. Centro de Endocrinologia Experimental y Aplicada (i); Argentina
Fil: Gagliardino, Juan Jose. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Cientifico Tecnológico La Plata. Centro de Endocrinologia Experimental y Aplicada (i); Argentina
Fil: del Zotto, Hector Herminio. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Cientifico Tecnológico La Plata. Centro de Endocrinologia Experimental y Aplicada (i); Argentina
description Objectives: To study the chronological appearance of pancreatic islet neogenesis–associated protein (INGAP)-positive cells and its correlation with the increase in β-cell mass and function in fetal and neonatal rats. Methods: Normal Wistar rat embryos (E) at gestational days 15, 17, and 19 (E15, E17, E19) and 7-day-old postnatal rats (P7) were humanely killed to determine body and pancreas weight; blood glucose; glucose and arginine-induced insulin secretion; real-time polymerase chain reaction of Pdx1 and Ngn3; quantitative immunomorphometric analysis of β-cell replication and apoptosis rate, cytokeratin and INGAP cell mass, and Pdx-1– and Ngn3-positive cells. Results: Body and pancreas weight increased with age (P7 > E19 > E17 > E15; P < 0.05). Neonates had higher blood glucose concentrations than embryos (P < 0.05). We recorded a simultaneous and significant age-dependent trend of increase in the number of β- and Pdx-1-positive cells, β- and cytokeratin-positive cell mass and β-cell capacity to release insulin in response to glucose and arginine, and decreased β-cell apoptotic rate. These changes closely paralleled the increase in INGAP-positive cell mass. Conclusions: These findings suggest that INGAP exerts a positive modulatory effect on β-cell mass and its secretory function in fetal and neonatal rats, thus becoming a new component in the multifactorial regulation of such processes.
publishDate 2013
dc.date.none.fl_str_mv 2013-04
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/11336/5291
Madrid, Viviana Graciela; Borelli, Maria Ines; Maiztegui, Barbara; Flores, Luis Emilio; Gagliardino, Juan Jose; et al.; Islet neogenesis-associated protein (INGAP)-positive cell mass, β-cell mass, and insulin secretion: their relationship during the fetal and neonatal periods; Lippincott Williams & Wilkins; Pancreas; 42; 3; 4-2013; 422-428
0885-3177
url http://hdl.handle.net/11336/5291
identifier_str_mv Madrid, Viviana Graciela; Borelli, Maria Ines; Maiztegui, Barbara; Flores, Luis Emilio; Gagliardino, Juan Jose; et al.; Islet neogenesis-associated protein (INGAP)-positive cell mass, β-cell mass, and insulin secretion: their relationship during the fetal and neonatal periods; Lippincott Williams & Wilkins; Pancreas; 42; 3; 4-2013; 422-428
0885-3177
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/url/http://journals.lww.com/pancreasjournal/Abstract/2013/04000/Islet_Neogenesis_Associated_Protein.6.aspx
info:eu-repo/semantics/altIdentifier/doi/10.1097/MPA.0b013e318264c7bd
info:eu-repo/semantics/altIdentifier/url/10.1097/MPA.0b013e318264c7bd
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 Lippincott Williams & Wilkins
publisher.none.fl_str_mv Lippincott Williams & Wilkins
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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