Cited by 17Bone Metabolism and DiseasesPhagocytosis and Immune RegulationBone and Dental Protein Studies

Ultrastructural and lanthanum tracer examination of rapidly resorbing rat alveolar bone suggests that osteoclasts internalize dying bone cells

Taniwaki, N. N., Katchburian, E.·1998·Cell and Tissue Research

Abstract

Glutaraldehyde-formaldehyde fixed undecalcified alveolar bone from 7-day-old rats was prepared for light and electron microscopy. Colloidal lanthanum was used as an ultrastructural tracer, and both random and semi-serial sections were examined. Lanthanum penetrated the infoldings of the ruffled border and some nearby vacuoles and vesicles. The majority of vacuoles and vesicles were lanthanum-free. Some osteoclast profiles contained a large vacuole with a cell enclosed in its interior. The enclosed cell exhibited an irregular nucleus containing condensed peripheral chromatin, intact cytoplasmic organelles, conspicuous rough endoplasmic reticulum and large blebs on the cell surface. These features are characteristic of osteoblasts or bone-lining cells or immature osteocytes which may be undergoing apoptosis or necrosis. The observation of remnants of cellular structures within internalized osteoclast vacuoles, together with the above results, suggests that osteoclasts engulf and probably degrade dying osteoblasts/bone-lining cells or immature osteocytes.

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Crossref · 10.1007/s004410051109

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18 of 18 references verified0 citation errors · 0 not checkable

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  • Osteoclasts are able to remove dying osteocytes and/or osteoblasts from a remodeling site.

    “Accordingly, it has been reported that osteoclasts engulf apoptotic osteocytes [74, 75, 192], suggesting that osteoclasts are able to remove dying osteocytes and/or osteoblasts from a remodeling site (Figures 4(c) and 4(d)).”
  • Osteoclasts engulf apoptotic osteocytes.

    “Accordingly, it has been reported that osteoclasts engulf apoptotic osteocytes [74, 75, 192], suggesting that osteoclasts are able to remove dying osteocytes and/or osteoblasts from a remodeling site (Figures 4(c) and 4(d)).”

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Authors
Taniwaki, N. N., & Katchburian, E.
Affiliations
  • Instituto Adolfo Lutz (BR)
  • Universidade Federal de São Paulo (BR)
Venue
Cell and Tissue Research
Published
1998-06-24
Volume
293
Issue
1
Pages
173-176
ISSN
  • 0302-766X (ISSN-L)
  • 1432-0878
OpenAlex
W2095402053
Cited by
17
References
18
Citations by year
2022: 1 · 2020: 1 · 2019: 1 · 2015: 1 · 2014: 1
FWCI
0.35
Type
journal article
Language
en
Open access
closed
Locations
  • Cell and Tissue Research (publishedVersion)
  • PubMed (publishedVersion)
  • UNIFESP Institutional Repository (Universidade Federal de São Paulo) (submittedVersion)
Topics
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Bone Metabolism and Diseases
  • Life Sciences › Immunology and Microbiology › Immunology › Phagocytosis and Immune Regulation
  • Health Sciences › Medicine › Rheumatology › Bone and Dental Protein Studies
Keywords
osteoclasts, alveolar bone loss, lanthanum tracer, ruffled border, apoptosis, necrosis, osteoblasts, bone lining cells, ultrastructure, rats
MeSH terms
Animals, Bone Resorption, Colloids, Endocytosis, Lanthanum, Microscopy, Electron, Osteoclasts, Phagocytosis, Cell Death, Rats, Wistar, Rats

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