Effects of iloprost on human mature osteoblasts in vitro
Abstract
BACKGROUND AND OBJECTIVES: Bone marrow oedema is a multifactorial conditioned illness. Alongside any strain relief of an affected joint, treatment with Iloprost also belongs to the choice of cures. In past studies, a modulatory effect on bone could be shown. The hypothesis of the present work is that Iloprost has a growth-stimulating effect on osteoblasts in vitro. METHODS: Human osteoblasts were isolated and cultivated. Subsequently, the cells were treated with Iloprost in bioavailable concentrations. Alterations of the cell structure were examined by means of light microscopy. A regulation of the number of vital cells was carried out by using a CASY cell counter. Possible cell impairment after Iloprost treatment was analysed by means of XTT Elisa as well as FDA and PI staining via fluorescence microscopy. RESULTS: Using light microscopy, no changes in cell structure could be observed. With the CASY cell counter, no increase in the numbers of osteoblasts appeared after Iloprost treatment. Also, XTT Elisas and fluorescence microscopy did not reveal any cell impairment due to Iloprost. CONCLUSION: Our results could not confirm a modulatory effect in mature osteoblasts. On the basis of the present work we could not verify any growth-stimulating effect by Iloprost in mature osteoblasts in vitro. Admittedly, effects had been shown previously during osteogenesis, but we do exclude an effect on mature osteoblasts which have already differentiated.
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