Mineralization in serially passaged human alveolar bone cells

• Tipo: Artigo em Revista Científica Internacional
• Data: 1997

Autores

Fernandes MH (Autor) FMDUP; Costa, MA (Autor) ICBAS; Carvalho, GS (Autor) Outra

Revista

Título: Journal of Materials Science: Materials in Medicine

Vol. 8 Nº 6

Páginas: 61-65

ISSN: 0957-4530

Editora: Springer Nature

Indexação

ISI Web of Knowledge - 34 Citações

Scopus - 26 Citações

Outras Informações

ID Authenticus: P-001-C1Q

DOI: 10.1023/a:1018598430983

Abstract (EN): Well-characterized human bone cell cultures have been regarded as a useful tool to study bone control mechanisms and also to analyse bone/biomaterials interactions. In the present study, human alveolar bone cells were cultured in alpha-minimal essential medium (alpha-MEM) containing 10% foetal bovine serum (FBS), 50 mu g/ml ascorbic acid, 10 mM sodium beta-glycerophosphate and either in the presence or in the absence of 10 nM dexamethasone (Dexa). Cultures were characterized concerning cell viability/proliferation, alkaline phosphatase (ALP), acid phosphatase (ACP) and tartraric acid resistant phosphatase (TRAP) activities, and formation of mineralized areas. Cell proliferation increased gradually for approximately 20 days. In the presence of Dexa, cells formed isolated or interconnected multilayered clusters that increased with culture time. Histochemical assays revealed strong positive reactions for ALP and calcium and phosphates deposits, mainly in relation to cells associated with the clusters. High levels of ALP activity (biochemical determination) were observed. Cells cultured in the absence of Dexa showed significantly lower ALP activity and no calcium and phosphates deposits were present. Serially passaged cells kept the proliferation rate constant but a decrease in ALP activity was observed either in the presence or in the absence of Dexa. The ability to form mineralized areas (cultures fed with Dexa) also decreased on serial subculture.

Idioma: Inglês

Tipo (Avaliação Docente): Científica

Nº de páginas: 5