alexa 1,25-dihydroxyvitamin D3 potentiates fluoride-stimulated collagen type I production in cultures of human bone marrow stromal osteoblast-like cells.
Pulmonology

Pulmonology

Journal of Clinical Respiratory Diseases and Care

Author(s): Kassem M, Mosekilde L, Eriksen EF

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Abstract In this study we tested the effects of sodium fluoride (NaF) in serum-free cultures of human marrow stromal osteoblast-like [hMS(OB)] cells. NaF (10(-5) M) stimulated hMS(OB) cell proliferation up to 220\% of control cultures. NaF alone did not increase type I collagen production, but in the presence of 1,25-dihydroxyvitamin D3 [1,25-(OH)2D3] (10(-9) M), NaF enhanced type I collagen production in a dose-dependent way to 300\% of 1,25-(OH)2D3-treated control cultures. The production of alkaline phosphatase (ALP) and osteocalcin (bone gla protein, BGP) was also enhanced in the presence of 1,25-(OH)2D3 to 170 and 200\%, respectively, of 1,25-(OH)2D3-treated controls. Our results suggest that 1,25-(OH)2D3 potentiates fluoride-mediated anabolism in hMS(OB) cell cultures and suggest that osteoblast precursors in bone marrow are targets for fluoride action. This article was published in J Bone Miner Res and referenced in Journal of Clinical Respiratory Diseases and Care

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