Cited by 38Bone Metabolism and DiseasesEstrogen and related hormone effectsBone health and treatments

Immunohistochemical detection of estrogen receptor β in alveolar bone cells of estradiol‐treated female rats: possible direct action of estrogen on osteoclast life span

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Cruzoé‐Souza, Mady, Sasso‐Cerri, Estela, Cerri, Paulo S.·2009·Journal of Anatomy

Abstract

The role of estrogen in bone resorption has been specifically related to the effect of estrogen on the signalling pathway that inhibits the formation of osteoclasts. However, osteoclast apoptosis and a significant reduction in the number of these cells have been observed in the alveolar bone of female rats treated with estradiol. In the present study, the expression of estrogen receptor β (ERβ) in the cells of alveolar bone was evaluated in estradiol‐treated and ‐untreated female rats. In order to test the possible direct action of estrogen on osteoclasts, the relationship between apoptosis and ERβ expression in these cells was also analysed. The animals received estradiol for 14 days and the alveolar bone fragments were embedded in paraffin for the quantification of tartrate‐resistant acid phosphatase‐positive osteoclasts. The expression of ERβ and apoptosis in the osteoclasts were evaluated by ERβ immunohistochemistry and Terminal deoxynucleotidyl transferase‐mediated dUTP Nick‐End Labelling (TUNEL) methods, respectively. To confirm osteoclast death by apoptosis, these cells were analysed under transmission electron microscopy. Some osteoclasts from estradiol‐treated animals were found to be undergoing apoptosis and the number of tartrate‐resistant acid phosphatase‐positive osteoclasts was significantly reduced. ERβ immunolabelling was observed in the cytoplasm and nuclei of active osteoblasts, osteocytes and osteoclasts in both groups, suggesting a direct participation of estrogen on alveolar bone cells. However, following estradiol treatment, a strong ERβ immunolabelling was often observed in the TUNEL‐positive osteoclasts. Therefore, these results indicate that, in addition to the other signalling pathway, the reduction of alveolar bone resorption is also related to a direct action of estrogen on osteoclasts, promoting apoptosis in these cells, via ERβ.

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Crossref · 10.1111/j.1469-7580.2009.01158.x

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Authors
Cruzoé‐Souza, M., Sasso‐Cerri, E., & Cerri, P. S.
Affiliations
  • Universidade Federal de São Paulo (BR)
  • Universidade Estadual Paulista (Unesp) (BR)
Corresponding author
Cerri, Paulo S.
Venue
Journal of Anatomy
Publisher
Wiley
Published
2009-11-17
Volume
215
Issue
6
Pages
673-681
ISSN
  • 0021-8782 (ISSN-L)
  • 1469-7580
OpenAlex
W2077065930
Cited by
38
References
52
Citations by year
2025: 5 · 2024: 3 · 2023: 3 · 2022: 1 · 2021: 3 · 2020: 5 · 2018: 2 · 2017: 1 · 2016: 3 · 2015: 3 · 2014: 2 · 2013: 2 · 2012: 1
FWCI
0.67
Type
journal article
Language
en
Open access
Locations
  • Journal of Anatomy (publishedVersion)
  • PubMed Central (publishedVersion)
  • PubMed (publishedVersion)
  • Acervo Digital da Universidade Estadual Paulista (Universidade Estadual Paulista) (submittedVersion, other-oa)
  • Americanae (AECID Library) (submittedVersion, other-oa)
  • Americanae (AECID Library) (submittedVersion)
  • LA Referencia (Red Federada de Repositorios Institucionales de Publicaciones Científicas) (submittedVersion, other-oa)
Funders
  • Conselho Nacional de Desenvolvimento Científico e Tecnológico
  • Fundação para o Desenvolvimento da UNESP
Topics
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Bone Metabolism and Diseases
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Genetics › Estrogen and related hormone effects
  • Health Sciences › Medicine › Oncology › Bone health and treatments
Keywords
estrogen receptor beta, estradiol, osteoclasts, osteoclast apoptosis, alveolar bone, bone resorption, osteoblasts, osteocytes, female rats
MeSH terms
Alveolar Process, Animals, Estradiol, Female, Microscopy, Electron, Osteoclasts, Apoptosis, In Situ Nick-End Labeling, Estrogen Receptor beta, Rats

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