Effects of 17β-estradiol on the cytoarchitecture of pyramidal CA1 neurons in normoglycemic and diabetic male spontaneously hypertensive rats
- Autores
- Brocca, María Elvira; Pietranera, Luciana; Roig, Paulina; Lima, Analia Ethel; de Nicola, Alejandro Federico
- Año de publicación
- 2014
- Idioma
- inglés
- Tipo de recurso
- artículo
- Estado
- versión publicada
- Descripción
- Previous work has shown a reduction of apical dendritic length and spine density in neurons from the CA1 hippocampus subfield of spontaneously hypertensive rats (SHR). These abnormalities are prevented by treatment for 2 weeks with 17 beta-estradiol. In view of the fact that diabetes and hypertension are comorbid diseases, we have now studied the effect of Streptozotocin-induced diabetes on the dendritic tree and spines of CA1 hippocampus neurons, and also compared the regulation of these parameters by 17 beta-estradiol in diabetic and normoglycemic SHR. Twenty week old male SHR received iv 40 mg/kg Streptozotocin or vehicle and studied one month afterwards. A group of normoglycemic and hyperglycemic SHR also received sc a single 17 beta-estradiol pellet or vehicle for 2 weeks. Hippocampus sections were impregnated with silver nitrate following a modified Golgi´s method and the arbor of CA1 pyramidal neurons analyzed by the Sholl´s method. 17 betaestradiol treatment of normoglycemic SHR reversed the reduced length of apical dendrites, the low spine density and additionally decreased blood pressure. Diabetic SHR showed increased length of apical and basal dendrites but reduced spine density compared to normoglycemic SHR. Diabetes also decreased blood pressure of SHR. Treatment with 17 beta-estradiol of diabetic SHR enhanced dendritic length, increased dendritic spine density and further decreased blood pressure. Thus, changes of cytoarchitecture of CA1 neurons due to 17 beta-estradiol treatment of normoglycemic SHR persisted after diabetes induction. A decrease of blood pressure may also contribute to the central effects of 17beta-estradiol in SHR diabetic rats.
Fil: Brocca, María Elvira. Consejo Nacional de Investigaciones Científicas y Técnicas. Instituto de Biología y Medicina Experimental (i); Argentina
Fil: Pietranera, Luciana. Consejo Nacional de Investigaciones Científicas y Técnicas. Instituto de Biología y Medicina Experimental (i); Argentina. Universidad de Buenos Aires. Facultad de Medicina. Departamento de Bioquímica Humana; Argentina
Fil: Roig, Paulina. Consejo Nacional de Investigaciones Científicas y Técnicas. Instituto de Biología y Medicina Experimental (i); Argentina
Fil: Lima, Analia Ethel. Consejo Nacional de Investigaciones Científicas y Técnicas. Instituto de Biología y Medicina Experimental (i); Argentina
Fil: de Nicola, Alejandro Federico. Consejo Nacional de Investigaciones Científicas y Técnicas. Instituto de Biología y Medicina Experimental (i); Argentina. Universidad de Buenos Aires. Facultad de Medicina. Departamento de Bioquímica Humana; Argentina - Materia
-
Hippocampus
17beta-Estradiol
Dendrites
Spines
Diabetes_Mellitus
Spontaneously_Hypertensive_Rat - Nivel de accesibilidad
- acceso abierto
- Condiciones de uso
- https://creativecommons.org/licenses/by-nc-nd/2.5/ar/
- Repositorio
- Institución
- Consejo Nacional de Investigaciones Científicas y Técnicas
- OAI Identificador
- oai:ri.conicet.gov.ar:11336/6288
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Effects of 17β-estradiol on the cytoarchitecture of pyramidal CA1 neurons in normoglycemic and diabetic male spontaneously hypertensive ratsBrocca, María ElviraPietranera, LucianaRoig, PaulinaLima, Analia Ethelde Nicola, Alejandro FedericoHippocampus17beta-EstradiolDendritesSpinesDiabetes_MellitusSpontaneously_Hypertensive_Rathttps://purl.org/becyt/ford/3.1https://purl.org/becyt/ford/3Previous work has shown a reduction of apical dendritic length and spine density in neurons from the CA1 hippocampus subfield of spontaneously hypertensive rats (SHR). These abnormalities are prevented by treatment for 2 weeks with 17 beta-estradiol. In view of the fact that diabetes and hypertension are comorbid diseases, we have now studied the effect of Streptozotocin-induced diabetes on the dendritic tree and spines of CA1 hippocampus neurons, and also compared the regulation of these parameters by 17 beta-estradiol in diabetic and normoglycemic SHR. Twenty week old male SHR received iv 40 mg/kg Streptozotocin or vehicle and studied one month afterwards. A group of normoglycemic and hyperglycemic SHR also received sc a single 17 beta-estradiol pellet or vehicle for 2 weeks. Hippocampus sections were impregnated with silver nitrate following a modified Golgi´s method and the arbor of CA1 pyramidal neurons analyzed by the Sholl´s method. 17 betaestradiol treatment of normoglycemic SHR reversed the reduced length of apical dendrites, the low spine density and additionally decreased blood pressure. Diabetic SHR showed increased length of apical and basal dendrites but reduced spine density compared to normoglycemic SHR. Diabetes also decreased blood pressure of SHR. Treatment with 17 beta-estradiol of diabetic SHR enhanced dendritic length, increased dendritic spine density and further decreased blood pressure. Thus, changes of cytoarchitecture of CA1 neurons due to 17 beta-estradiol treatment of normoglycemic SHR persisted after diabetes induction. A decrease of blood pressure may also contribute to the central effects of 17beta-estradiol in SHR diabetic rats.Fil: Brocca, María Elvira. Consejo Nacional de Investigaciones Científicas y Técnicas. Instituto de Biología y Medicina Experimental (i); ArgentinaFil: Pietranera, Luciana. Consejo Nacional de Investigaciones Científicas y Técnicas. Instituto de Biología y Medicina Experimental (i); Argentina. Universidad de Buenos Aires. Facultad de Medicina. Departamento de Bioquímica Humana; ArgentinaFil: Roig, Paulina. Consejo Nacional de Investigaciones Científicas y Técnicas. Instituto de Biología y Medicina Experimental (i); ArgentinaFil: Lima, Analia Ethel. Consejo Nacional de Investigaciones Científicas y Técnicas. Instituto de Biología y Medicina Experimental (i); ArgentinaFil: de Nicola, Alejandro Federico. Consejo Nacional de Investigaciones Científicas y Técnicas. Instituto de Biología y Medicina Experimental (i); Argentina. Universidad de Buenos Aires. Facultad de Medicina. Departamento de Bioquímica Humana; ArgentinaElsevier2014-11-07info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfapplication/pdfapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/6288Brocca, María Elvira; Pietranera, Luciana; Roig, Paulina; Lima, Analia Ethel; de Nicola, Alejandro Federico; Effects of 17β-estradiol on the cytoarchitecture of pyramidal CA1 neurons in normoglycemic and diabetic male spontaneously hypertensive rats; Elsevier; Neuroscience; 280; 7-11-2014; 243-2530306-45221873-7544enginfo:eu-repo/semantics/altIdentifier/doi/10.1016/j.neuroscience.2014.09.030info:eu-repo/semantics/altIdentifier/doi/info:eu-repo/semantics/altIdentifier/url/http://www.sciencedirect.com/science/article/pii/S0306452214007799info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-nd/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-09-29T10:13:34Zoai:ri.conicet.gov.ar:11336/6288instacron: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 10:13:35.166CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse |
dc.title.none.fl_str_mv |
Effects of 17β-estradiol on the cytoarchitecture of pyramidal CA1 neurons in normoglycemic and diabetic male spontaneously hypertensive rats |
title |
Effects of 17β-estradiol on the cytoarchitecture of pyramidal CA1 neurons in normoglycemic and diabetic male spontaneously hypertensive rats |
spellingShingle |
Effects of 17β-estradiol on the cytoarchitecture of pyramidal CA1 neurons in normoglycemic and diabetic male spontaneously hypertensive rats Brocca, María Elvira Hippocampus 17beta-Estradiol Dendrites Spines Diabetes_Mellitus Spontaneously_Hypertensive_Rat |
title_short |
Effects of 17β-estradiol on the cytoarchitecture of pyramidal CA1 neurons in normoglycemic and diabetic male spontaneously hypertensive rats |
title_full |
Effects of 17β-estradiol on the cytoarchitecture of pyramidal CA1 neurons in normoglycemic and diabetic male spontaneously hypertensive rats |
title_fullStr |
Effects of 17β-estradiol on the cytoarchitecture of pyramidal CA1 neurons in normoglycemic and diabetic male spontaneously hypertensive rats |
title_full_unstemmed |
Effects of 17β-estradiol on the cytoarchitecture of pyramidal CA1 neurons in normoglycemic and diabetic male spontaneously hypertensive rats |
title_sort |
Effects of 17β-estradiol on the cytoarchitecture of pyramidal CA1 neurons in normoglycemic and diabetic male spontaneously hypertensive rats |
dc.creator.none.fl_str_mv |
Brocca, María Elvira Pietranera, Luciana Roig, Paulina Lima, Analia Ethel de Nicola, Alejandro Federico |
author |
Brocca, María Elvira |
author_facet |
Brocca, María Elvira Pietranera, Luciana Roig, Paulina Lima, Analia Ethel de Nicola, Alejandro Federico |
author_role |
author |
author2 |
Pietranera, Luciana Roig, Paulina Lima, Analia Ethel de Nicola, Alejandro Federico |
author2_role |
author author author author |
dc.subject.none.fl_str_mv |
Hippocampus 17beta-Estradiol Dendrites Spines Diabetes_Mellitus Spontaneously_Hypertensive_Rat |
topic |
Hippocampus 17beta-Estradiol Dendrites Spines Diabetes_Mellitus Spontaneously_Hypertensive_Rat |
purl_subject.fl_str_mv |
https://purl.org/becyt/ford/3.1 https://purl.org/becyt/ford/3 |
dc.description.none.fl_txt_mv |
Previous work has shown a reduction of apical dendritic length and spine density in neurons from the CA1 hippocampus subfield of spontaneously hypertensive rats (SHR). These abnormalities are prevented by treatment for 2 weeks with 17 beta-estradiol. In view of the fact that diabetes and hypertension are comorbid diseases, we have now studied the effect of Streptozotocin-induced diabetes on the dendritic tree and spines of CA1 hippocampus neurons, and also compared the regulation of these parameters by 17 beta-estradiol in diabetic and normoglycemic SHR. Twenty week old male SHR received iv 40 mg/kg Streptozotocin or vehicle and studied one month afterwards. A group of normoglycemic and hyperglycemic SHR also received sc a single 17 beta-estradiol pellet or vehicle for 2 weeks. Hippocampus sections were impregnated with silver nitrate following a modified Golgi´s method and the arbor of CA1 pyramidal neurons analyzed by the Sholl´s method. 17 betaestradiol treatment of normoglycemic SHR reversed the reduced length of apical dendrites, the low spine density and additionally decreased blood pressure. Diabetic SHR showed increased length of apical and basal dendrites but reduced spine density compared to normoglycemic SHR. Diabetes also decreased blood pressure of SHR. Treatment with 17 beta-estradiol of diabetic SHR enhanced dendritic length, increased dendritic spine density and further decreased blood pressure. Thus, changes of cytoarchitecture of CA1 neurons due to 17 beta-estradiol treatment of normoglycemic SHR persisted after diabetes induction. A decrease of blood pressure may also contribute to the central effects of 17beta-estradiol in SHR diabetic rats. Fil: Brocca, María Elvira. Consejo Nacional de Investigaciones Científicas y Técnicas. Instituto de Biología y Medicina Experimental (i); Argentina Fil: Pietranera, Luciana. Consejo Nacional de Investigaciones Científicas y Técnicas. Instituto de Biología y Medicina Experimental (i); Argentina. Universidad de Buenos Aires. Facultad de Medicina. Departamento de Bioquímica Humana; Argentina Fil: Roig, Paulina. Consejo Nacional de Investigaciones Científicas y Técnicas. Instituto de Biología y Medicina Experimental (i); Argentina Fil: Lima, Analia Ethel. Consejo Nacional de Investigaciones Científicas y Técnicas. Instituto de Biología y Medicina Experimental (i); Argentina Fil: de Nicola, Alejandro Federico. Consejo Nacional de Investigaciones Científicas y Técnicas. Instituto de Biología y Medicina Experimental (i); Argentina. Universidad de Buenos Aires. Facultad de Medicina. Departamento de Bioquímica Humana; Argentina |
description |
Previous work has shown a reduction of apical dendritic length and spine density in neurons from the CA1 hippocampus subfield of spontaneously hypertensive rats (SHR). These abnormalities are prevented by treatment for 2 weeks with 17 beta-estradiol. In view of the fact that diabetes and hypertension are comorbid diseases, we have now studied the effect of Streptozotocin-induced diabetes on the dendritic tree and spines of CA1 hippocampus neurons, and also compared the regulation of these parameters by 17 beta-estradiol in diabetic and normoglycemic SHR. Twenty week old male SHR received iv 40 mg/kg Streptozotocin or vehicle and studied one month afterwards. A group of normoglycemic and hyperglycemic SHR also received sc a single 17 beta-estradiol pellet or vehicle for 2 weeks. Hippocampus sections were impregnated with silver nitrate following a modified Golgi´s method and the arbor of CA1 pyramidal neurons analyzed by the Sholl´s method. 17 betaestradiol treatment of normoglycemic SHR reversed the reduced length of apical dendrites, the low spine density and additionally decreased blood pressure. Diabetic SHR showed increased length of apical and basal dendrites but reduced spine density compared to normoglycemic SHR. Diabetes also decreased blood pressure of SHR. Treatment with 17 beta-estradiol of diabetic SHR enhanced dendritic length, increased dendritic spine density and further decreased blood pressure. Thus, changes of cytoarchitecture of CA1 neurons due to 17 beta-estradiol treatment of normoglycemic SHR persisted after diabetes induction. A decrease of blood pressure may also contribute to the central effects of 17beta-estradiol in SHR diabetic rats. |
publishDate |
2014 |
dc.date.none.fl_str_mv |
2014-11-07 |
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/11336/6288 Brocca, María Elvira; Pietranera, Luciana; Roig, Paulina; Lima, Analia Ethel; de Nicola, Alejandro Federico; Effects of 17β-estradiol on the cytoarchitecture of pyramidal CA1 neurons in normoglycemic and diabetic male spontaneously hypertensive rats; Elsevier; Neuroscience; 280; 7-11-2014; 243-253 0306-4522 1873-7544 |
url |
http://hdl.handle.net/11336/6288 |
identifier_str_mv |
Brocca, María Elvira; Pietranera, Luciana; Roig, Paulina; Lima, Analia Ethel; de Nicola, Alejandro Federico; Effects of 17β-estradiol on the cytoarchitecture of pyramidal CA1 neurons in normoglycemic and diabetic male spontaneously hypertensive rats; Elsevier; Neuroscience; 280; 7-11-2014; 243-253 0306-4522 1873-7544 |
dc.language.none.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
info:eu-repo/semantics/altIdentifier/doi/10.1016/j.neuroscience.2014.09.030 info:eu-repo/semantics/altIdentifier/doi/ info:eu-repo/semantics/altIdentifier/url/http://www.sciencedirect.com/science/article/pii/S0306452214007799 |
dc.rights.none.fl_str_mv |
info:eu-repo/semantics/openAccess https://creativecommons.org/licenses/by-nc-nd/2.5/ar/ |
eu_rights_str_mv |
openAccess |
rights_invalid_str_mv |
https://creativecommons.org/licenses/by-nc-nd/2.5/ar/ |
dc.format.none.fl_str_mv |
application/pdf application/pdf application/pdf application/pdf application/pdf |
dc.publisher.none.fl_str_mv |
Elsevier |
publisher.none.fl_str_mv |
Elsevier |
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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1844614053846056960 |
score |
13.070432 |