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Human periodontal ligament cells facilitate leukocyte recruitment and are influenced in their immunomodulatory function by Th17 cytokine release.

机译:人牙周膜细胞促进白细胞募集,并受Th17细胞因子释放影响其免疫调节功能。

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The objective of this in vitro study was to examine the immunomodulatory impact of human periodontal ligament (PDL) cells on the nature and magnitude of the leukocyte infiltrate in periodontal inflammation, particularly with regard to Th17 cells. PDL cells were challenged with pro-inflammatory cytokines (IL-1?, IL-17A, and IFN-γ) and analyzed for the expression of cytokines involved in periodontal immunoinflammatory processes (IL-6, MIP-3 alpha, IL-23A, TGF?1, IDO, and CD274). In order to further investigate a direct involvement of PDL cells in leukocyte function, co-culture experiments were conducted. The expression of the immunomodulatory cytokines studied was significantly increased under pro-inflammatory conditions in PDL cells. Although PDL cells did not stimulate leukocyte proliferation or Th17 differentiation, these cells induced the recruitment of leukocytes. The results of our study suggest that PDL cells might be involved in chronic inflammatory mechanisms in periodontal tissues and thus in the transition to an adaptive immune response in periodontitis.
机译:这项体外研究的目的是检查人牙周膜(PDL)细胞对牙周炎症中白细胞浸润的性质和大小的免疫调节作用,特别是Th17细胞。用促炎性细胞因子(IL-1α,IL-17A和IFN-γ)攻击PDL细胞,并分析涉及牙周免疫炎症过程的细胞因子的表达(IL-6,MIP-3 alpha,IL-23A, TGF?1,IDO和CD274)。为了进一步研究PDL细胞直接参与白细胞功能,进行了共培养实验。在促炎条件下,PDL细胞中免疫调节细胞因子的表达显着增加。尽管PDL细胞不刺激白细胞增殖或Th17分化,但这些细胞诱导了白细胞的募集。我们的研究结果表明,PDL细胞可能参与牙周组织的慢性炎症机制,从而参与了牙周炎向适应性免疫反应的过渡。

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