| Title | Comparative effects of nacre water-soluble matrix and dexamethasone on the alkaline phosphatase activity of MRC-5 fibroblasts |
| Publication Type | Journal Article |
| 2001 |
| Authors | Almeida, MJ, Pereira, L, Milet, C, Haigle, J, Barbosa, M, Lopez, E |
| Journal | Journal of Biomedical Materials ResearchJ. Biomed. Mater. Res. |
| Volume | 57 |
| Issue | 2 |
| Pagination | 306 - 312 |
| Date Published | 2001/// |
| 00219304 (ISSN) |
| alkaline phosphatase, Animals, article, Biomedical engineering, BMP-2, Bone, bone development, bone marrow, Bone Marrow Cells, Bone morphogenetic proteins, Cell culture, Cell Line, cell proliferation, Cells, concentration response, dexamethasone, differentiation inducing factor, dose response, Dose-Response Relationship, Drug, enzyme activity, fibroblast, Fibroblasts, Glucocorticoids, human, human cell, Humans, male, MRC-5 fibroblasts, Nacre, natural product, osteoblast, Ostreidae, oyster, phenotype, Proteins, Pulmonary diseases, Rats, Rats, Wistar, Solubility, stroma cell, time, Time Factors, Transforming Growth Factor beta, unclassified drug, Water, Water-soluble matrix |
| In this study we demonstrate, for the first time, that dexamethasone and BMP-2 stimulated alkaline phosphatase (ALP) activity in MRC-5 fibroblasts, a cell line derived from human fetal lung. Previously we reported that the water-soluble matrix (WSM) of nacre obtained from the inner shell layer of the oyster Pinctada maxima, promoted an increase in ALP activity that was dose-dependent. In this work, we show that the effect of WSM is also time-dependent. As a comparison, the effect of WSM was also tested in bone marrow stromal cells because marrow and other bone surface-derived osteoblast stem cells have the inherent direct potential for osteogenesis. WSM promotes cell proliferation and ALP activity when tested with bone marrow cells in concentrations between 135 and 540 μg protein/mL. The effect of WSM on ALP activity of bone marrow stromal cells is similar to that obtained by dexamethasone. These results imply that MRC-5 fibroblasts respond to differentiating factors that promote osteoblastic phenotype in bone-derived cell cultures. © 2001 John Wiley & Sons, Inc. |
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