系统性红斑狼疮患者外周血CD14+单核细胞表面TLR2、TLR4表达的变化

    Expression of toll-like receptor-2 and toll-like receptor-4 in peripheral blood monocytes of patients with systemic lupus erythematosus

    • 摘要: 目的:探讨系统性红斑狼疮(systemic lupus erythematosus,SLE)患者外周血单核细胞表面Toll样受体2(toll-likereceptor-2,TLR2)和Toll样受体4(toll-like receptor-4,TLR4)表达的变化。方法:流式细胞术分别检测75例SLE患者(SLE组)和44名正常人(对照组)外周血单核细胞表面TLR2和TLR4的阳性率和平均荧光强度(meam fluorescence intensity,MFI)。统计分析TLR2和TLR4阳性率和MFI与相关临床与实验室指标的相关性。结果:TLR2在SLE组外周血CD14+单核细胞表面的阳性率和MFI均低于对照组;而TLR4在SLE组外周血CD14+单核细胞表面的阳性率高于对照组,但MFI表达低于对照组(P<0.01)。TLR2阳性率与SLE活动指数呈负相关(P<0.01)。结论:TLR2和TLR4在SLE患者外周血CD14+单核细胞表面表达有显著变化,提示可能与SLE的发生及病情存在一定的关联。

       

      Abstract: Objective: To investigate the changes of toll like receptors-2 (TLR2)and toll like receptors-4 (TLR4)on the surface of CD14+ monocytes in the peripheral blood of patients with systemic lupus erythematosus (SLE).Methods: The expression rate and intensity of TLR2 and TLR4 on the CD14+ monocytes in the peripheral blood of 75 patients with SLE and 44 normal controls were determined by flow cytometry.The TLR2 and TLR4 expression rates,the mean fluorescence intensity (MFI) and the related clinical and laboratory indicators were analyzed.Results: The expression rate and MFI of TLR2 and TLR4 on CD14+ monocytes in the peripheral blood of SLE patients were lower than that of the control group,and the TLR4 in SLE patients with CD14+monocyte expression was higher than that of the normal controls,but the MFI of TLR4 was lower than that of normal subjects (P<0.01).The expression rate of TLR2 was inversely correlated with SLE disease activity index (P<0.01).Conclusions: There is difference in the expression pattern of TLR2 and TLR4 between SLE group and the health control.The results indicate that TLR2 and TLR4 may be involved both in the initiation stage and pathogenetic condition of SLE.

       

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