Effect of nicotine in matrix mineralization by human bone marrow and Saos-2 cells cultured on the surface of plasma-sprayed titanium implants

• Tipo: Artigo em Revista Científica Internacional
• Data: 2009

Autores

Pereira ML (Autor) FMDUP; João F C Carvalho (Autor) FMDUP; Fernando Peres (Autor) FMDUP; Fernandes MH (Autor) FMDUP

Revista

Título: Journal of Biomedical Materials Research - Part A

Vol. 88 Nº 1

Páginas: 84-93

ISSN: 1549-3296

Editora: Wiley-Blackwell

Indexação

ISI Web of Knowledge - 15 Citações

ISI Web of Science

Scopus - 17 Citações

Pubmed / Medline

Classificação Científica

FOS: Ciências médicas e da saúde > Outras ciências médicas

CORDIS: Ciências da Saúde

Outras Informações

ID Authenticus: P-003-QTG

Abstract (EN): Smoking has an established negative impact in the clinical outcome of dental implants. This work analyses the response of human osteoblastic cells to nicotine, at the surface of plasma-sprayed commercial titanium implants. Human bone marrow (HBM) and Saos-2 cells, seeded on the surface of titanium implants and cultured in experimental conditions favoring osteoblastic differentiation, were exposed continuously to nicotine (0.0001 to 0.5 mg mL−1) and characterized for cell proliferation and function. Exposure of HBM cells resulted in increased cell proliferation, higher alkaline phosphatase (ALP) activity, and earlier onset of matrix mineralization at levels up to 0.2 mg mL−1, an initial inhibitory effect in cell growth and functional activity followed by a recovery in the presence of 0.3 mg mL−1 and a dose-dependent deleterious effect at higher levels. By contrast, exposure to nicotine did not affect cell proliferation of Saos-2 cells at levels up to 0.2 mg mL−1, and caused only a small positive effect in ALP activity in the presence of 0.05 and 0.1 mg mL−1; however, matrix mineralization by Saos-2 cells also occurred earlier in the cultures exposed to levels of nicotine up to 0.1 mg mL−1. Higher concentrations caused dose-dependent inhibitory effects. Considering the high diffusion potential of nicotine, results suggest a local role of nicotine in modulating bone formation events at the implant surface. © 2008 Wiley Periodicals, Inc. J Biomed Mater Res, 2009

Idioma: Inglês

Tipo (Avaliação Docente): Científica