正常ヒト骨芽細胞におけるBMP産生に及ぼすフェニトインの効果

概要

論文の詳細を見る
The present study was undertaken to examine the effect of phenytoin on the synthesis of bone morphogenetic proteins (BMPs). The effects of phenytoin on the gene expression of BMP-1-7 in normal human mandible-derived bone cells (HOB-M cells) were evaluated by the semiquantitative reverse transcriptionpolymerase chain reaction (RT-PCR). While phenytoin increased the mRNA levels of BMP-2 in HOB-M cells, it failed to significantly affect the mRNA levels of other BMPs. The effects of phenytoin treatment on intracellular BMP-2 synthesis in HOB-M were assessed by immunocytochemistry and the effects on the secretion of BMP-2 were evaluated by dot blotting. Phenytoin significantly increased the intensity of immunocytological staining of BMP-2 and the secretion of BMP-2. Interestingly, the stimulatory effects of phenytoin on osteocalcin secretion were completely blocked by antihuman BMP-2 monoclonal antibody. In conclusion, the present study indicates that the stimulatory effects of phenytoin on osteocalcin secretion in human bone cells are, at least, in part mediated by BMP-2.
北海道医療大学の論文
1999-06-30