当前位置： SCI文献检索 > LIFE SCIENCES期刊下所有文献 > Myricetin inhibits the induction of anti-Fas IgM-, tumor necrosis factor-alpha- and interleukin-1beta-mediated apoptosis by Fas pathway inhibition in human osteoblastic cell line MG-63.

Myricetin inhibits the induction of anti-Fas IgM-, tumor necrosis factor-alpha- and interleukin-1beta-mediated apoptosis by Fas pathway inhibition in human osteoblastic cell line MG-63.

Abstract：

:The survival of osteoblast cells is one of the determinants of the development of osteoporosis in patients with inflamed synovium, such as in rheumatoid arthritis (RA). By means of alkaline phosphatase (ALP) activity and osteocalcin ELISA assay, I have shown that myricetin exhibits a significant induction of differentiation in the human osteoblast-like cell line MG-63. In addition, I also assessed whether myricetin affects inflammatory cytokines-mediated apoptosis in osteoblast cells. TNF-alpha or IL-1beta enhances apoptotic DNA fragmentation in anti-Fas IgM-treated MG-63 cells by increasing Fas receptor expression. However, TNF-alpha or IL-1beta treatment alone does not induce apoptosis. Treatment of MG-63 cells with myricetin not only inhibited anti-Fas IgM-induced apoptosis, but also blocked the synergetic effect of anti-Fas IgM with TNF-alpha or IL-1beta on cell death. The apoptotic inhibition of myricetin is associated with inhibition of TNF-alpha and IL-1beta-mediated Fas expression and enhancement of FLIP expression, resulting in a decrease of caspase-8 and caspase-3 activation. These results indicate a potential use of myricetin in preventing osteoporosis by inhibiting inflammatory cytokines-mediated apoptosis in osteoblast cells.

journal_name

Life Sci

journal_title

Life sciences

authors

Kuo PL

doi

10.1016/j.lfs.2005.05.026

subject

Has Abstract

pub_date

2005-10-21 00:00:00

pages

2964-76

issue

23

eissn

0024-3205

issn

1879-0631

pii

S0024-3205(05)00539-4

journal_volume

77

pub_type

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