首页> 美国卫生研究院文献>The Journal of Experimental Medicine >Spontaneous production of fibroblast-activating factor(s) by synovial inflammatory cells. A potential mechanism for enhanced tissue destruction
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Spontaneous production of fibroblast-activating factor(s) by synovial inflammatory cells. A potential mechanism for enhanced tissue destruction

机译:滑膜炎性细胞自发产生成纤维细胞活化因子。增强组织破坏的潜在机制

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摘要

A characteristic feature of rheumatoid arthritis is hyperplasia of the synovial lining cells and fibroblasts, the source of tissue-degrading mediators, in association with the appearance and persistence of lymphocytes in affected joints. Diseased synovial tissue obtained at arthroscopy from 10 of 12 rheumatoid arthritis patients was found to release a factor(s) that could stimulate quiescent fibroblasts to proliferate in vitro. Mononuclear cells isolated from this synovial tissue and from the synovial fluid spontaneously produced fibroblast- activating factor(s) (FAF). In contrast, synovial tissue from patients with noninflammatory joint disease did not release FAF. By gel filtration, FAF was detected in two peaks (40,000 and 15,000 mol wt) that were consistent with the previously described peripheral blood T lymphocyte- and monocyte-derived factors with identical activity. The mononuclear cells were predominantly OKT3+/Leu-1+ T lymphocytes and OKM1+ cells of monocyte/macrophage lineage that expressed HLA-DR antigens, suggesting prior activation of these cells. Mononuclear cells isolated from the peripheral blood of these patients did not spontaneously secrete FAF. Lymphocytes and monocytes from the site of synovial inflammation appear to be activated in situ to produce factors that may contribute to the hyperplasia and overgrowth of the synovial membrane in rheumatoid arthritis.
机译:类风湿关节炎的特征是滑膜衬里细胞和成纤维细胞的增生,这是组织降解介质的来源,与受累关节中淋巴细胞的出现和持续存在有关。通过关节镜检查从12名类风湿性关节炎患者中的10名患病的滑膜组织被发现释放一种或多种因子,可以刺激静态成纤维细胞在体外增殖。从该滑膜组织和滑液中分离出的单核细胞自发产生成纤维细胞活化因子(FAF)。相反,非炎性关节疾病患者的滑膜组织未释放FAF。通过凝胶过滤,在两个峰(40,000和15,000 mol wt)中检测到了FAF,这两个峰与先前描述的具有相同活性的外周血T淋巴细胞和单核细胞衍生因子一致。单核细胞主要是表达HLA-DR抗原的OKT3 + / Leu-1 + T淋巴细胞和单核细胞/巨噬细胞谱系的OKM1 +细胞,提示这些细胞在先激活。从这些患者的外周血中分离出的单核细胞不会自发分泌FAF。来自滑膜炎症部位的淋巴细胞和单核细胞似乎被原位激活,从而产生可能导致类风湿性关节炎滑膜增生和过度生长的因子。

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