JUNCTIONS BETWEEN EARLY DEVELOPING OSTEOBLASTS of RAT CALVARIA AS REVEALED BY FREEZE-FRACTURE and ULTRATHIN SECTION ELECTRON-MICROSCOPY

JUNCTIONS BETWEEN EARLY DEVELOPING OSTEOBLASTS of RAT CALVARIA AS REVEALED BY FREEZE-FRACTURE and ULTRATHIN SECTION ELECTRON-MICROSCOPY

Autor Arana Chavez, V. E. Google Scholar
Soares, AMV Google Scholar
Katchburian, Eduardo Autor UNIFESP Google Scholar
Instituição Universidade Federal de São Paulo (UNIFESP)
Universidade de São Paulo (USP)
Resumo Although intercellular junctions have been described between mature lamellar bone cells, little has been known about junctions between osteoblasts in early developing bone. We therefore conducted a freeze-fracture and ultrathin section study on developing calvaria of rat embryos aged 17-19 days to determine what types of intercellular junctions appear between osteoblasts in early osteogenesis. We observed that three main types of junctional structures, i.e., adherens of the macular type, gap, and focal tight junctions, coexist between osteoblasts in early developing bone. Their possible involvement in early morphogenetic events is discussed. Tight junctions are considered to be involved in compartmentalization of the early matrix and final polarization of osteoblasts.
Idioma Inglês
Data de publicação 1995-08-01
Publicado em Archives of Histology and Cytology. Niigata: Int Soc Histology & Cytology, v. 58, n. 3, p. 285-292, 1995.
ISSN 0914-9465 (Sherpa/Romeo, fator de impacto)
Publicador Int Soc Histology & Cytology
Extensão 285-292
Fonte http://dx.doi.org/10.1679/aohc.58.285
Direito de acesso Acesso aberto Open Access
Tipo Artigo
Web of Science WOS:A1995RR97500002
Endereço permanente http://repositorio.unifesp.br/handle/11600/25518

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