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Glucocorticoid and Bone. The effect of glucocorticoid and PTH in osteoblast apoptosis and differentiation via interleukin 11 expression. Endo Itsuro 1 1Department of Medicine and Bioregulatory Sciences, The University of Tokushima Graduate School of Medical Sciences, Japan. pp.1321-1328
Published Date 2014/8/28
DOI https://doi.org/10.20837/4201409043
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 Intermittent PTH administration stimulates bone formation and counteracts the inhibition of bone formation by glucocorticoid excess. We have previously demonstrated that PTH enhances interleukin(IL)-11 gene transcription by a rapid induction of delta-fosB expression and Smad1/5 phosphorylation. On the other hand, glucocorticoid can suppress osteoblast differentiation and enhance apoptosis of osteoblast cells via down-regulation of IL-11 expression. PTH could reverse glucocorticoid-induced these damage of osteoblast via stimulation of IL-11 expression. Our data also suggested that IL-11 mediates stimulatory and inhibitory signals of osteoblast differentiation by affecting Wnt signaling. These data demonstrates that PTH and glucocorticoid may regulate osteoblast differentiation and apoptosis via their effect on IL-11 expression.



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電子版ISSN 印刷版ISSN 0917-5857 医薬ジャーナル社

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