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- W1913891947 abstract "T cells infiltrate the inflammatory site of periodontitis and consequently stimulate the loss of periodontal bone. We previously reported that T cells from lipopolysaccharide (LPS)-injected mice (LPS-T cells) accelerated osteoclastogenesis in the presence of LPS. Ηowever, the detailed mechanism of this acceleration is still unclear. In this study, we analyzed the mechanism of osteoclastogenesis accelerated by LPS-T cells.We examined the mechanism of osteoclastogenesis acceleration. First, to determine the effect of cell-to-cell contact, we co-cultured T cells and bone marrow macrophages, prestimulated with RANKL for 48 h (R-BMMs), in the presence of LPS for 24 h, in a Transwell. Second, to determine the effect of CD40 ligand (CD40L), we co-cultured T cells and R-BMMs in the presence of LPS and anti-CD40L immunoglobulin. Third, we examined the effect of recombinant mouse CD40L (rCD40L) in the presence of LPS in vitro and in vivo. Lastly, we examined the expression of membrane-bound CD40L (mCD40L) by fluorescence-activated cell sorting (FACS).Blocking cell-to-cell contact between LPS-T cells and R-BMMs completely inhibited the acceleration of osteoclastogenesis. Anti-CD40L immunoglobulin also completely inhibited the acceleration of osteoclastogenesis. Moreover, rCD40L accelerated osteoclastogenesis in the presence of LPS in vitro and in vivo. Finally, the expression of mCD40L on LPS-T cells was higher than that on T cells isolated from mice not injected with LPS.The results demonstrate that CD40L accelerates osteoclastogenesis in the presence of RANKL and LPS. The results also suggest that mCD40L on LPS-T cells accelerates osteoclastogenesis." @default.
- W1913891947 created "2016-06-24" @default.
- W1913891947 creator A5038756361 @default.
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- W1913891947 date "2011-04-26" @default.
- W1913891947 modified "2023-10-16" @default.
- W1913891947 title "Membrane-bound CD40 ligand on T cells from mice injected with lipopolysaccharide accelerates lipopolysaccharide-induced osteoclastogenesis" @default.
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- W1913891947 doi "https://doi.org/10.1111/j.1600-0765.2011.01362.x" @default.
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