Summary： The expression and activity of NF-kB in the synovium of collagen-induced arthritis （CIA） rats was detected in order to investigate the possible therapeutic effects of triptolide on rheumatoid arthritis （R...Summary： The expression and activity of NF-kB in the synovium of collagen-induced arthritis （CIA） rats was detected in order to investigate the possible therapeutic effects of triptolide on rheumatoid arthritis （RA）. The experimental Wistar rat model of CIA was set up by intradermal injection of emulsion of bovine collagen 11 and the successful rate of setting-up models was evaluated by arthritis index （AI）. Rats were grouped randomly into three groups： normal, model and treatment group. The expression of TNF-α and IL-6 in synovial fluid was detected by ELISA, and the expression and activity of NF kB in synovium by immunohistochemistry method and by electrophoretic mobility shift assay （EMSA） respectively. As compared with normal group, the expression of TNF a and IL-6 in synovia （P〈0. 05）, and the expression and activity of NF-kB （P〈0.05） in synovium were increased in model group. There was statistical difference in above-mentioned indexes between model group and treatment group. Triptolide may play a protective role in IRA via downregulating the expression and activity of NF-kB in synovium.展开更多
Objective: To test whether the novel tumor-suppressor candidate gene-ndr2 is also differentially expressed between osteoarthritis synovium cells (OASC) and rheumatoid arthritis synovium fibroblasts (RASF), and whether...Objective: To test whether the novel tumor-suppressor candidate gene-ndr2 is also differentially expressed between osteoarthritis synovium cells (OASC) and rheumatoid arthritis synovium fibroblasts (RASF), and whether ndr2 can suppress the growth of RASF in vitro. Methods: Dot blotting, cell culture and gene transfection, cell cycle analysis techniques were applied to investigate the effect of ndr2 on the cell phenotype and cell cycles. Results: ndr2 is expressed in OASC but absent in RASF. Transient transfection of ndr2 into RASF can suppress the growth of RASF from phenotype observation. Cell cycle analysis showed that apoptotic peaks can be detected in RASF cells transfected with ndr2 gene. Conclusion: Novel tumor suppressor candidate ndr2 is not only differentially expressed between OASC and RASF but also can induce the apoptosis of RASF in vitro.展开更多
Eosinophils are multifunctional granulocytes that contribute to the initiation and modulation of inflammation.Accumulating evidence suggests that eosinophils are adaptable leukocytes that orchestrate the resolution of...Eosinophils are multifunctional granulocytes that contribute to the initiation and modulation of inflammation.Accumulating evidence suggests that eosinophils are adaptable leukocytes that orchestrate the resolution of inflammatory responses.The most prevalent chronic inflammatory illness,rheumatoid arthritis(RA),is typified by persistent synovitis thatmakes it hard for the disease to go away on its own.Interestingly,a unique subset of eosinophils known as regulatory eosinophils has been found in RA patients’synovium,especially while the disease is in remission.Pro-resolving signatures of regulatory eosinophils in the synovium are distinct from those of their lung counterparts.The most recent research on eosinophils and their function in this disease pathogenesis is compiled in this review.Based on the role of regulatory eosinophils,a new pathological model of inflammation resolution in RA is proposed,and potential therapeutic strategies aimed at enhancing the action of regulatory eosinophils in RA are proposed.展开更多
RHEUMATOID arthritis (RA) is an autoimmune disease which progressively and systematicallyinvades the joints of bones. A severe chronic situation may lead to the damage of cartilages,bones and tendons and eventually ha...RHEUMATOID arthritis (RA) is an autoimmune disease which progressively and systematicallyinvades the joints of bones. A severe chronic situation may lead to the damage of cartilages,bones and tendons and eventually handicap the patients. One of the main histopathological fea-tures of rheumatoid synovium is a marked increase of the thickness and the number of cells inthe synovial lining layer. It is well known that the synovial lining cells secrete many cell fac-展开更多
目的检测NLRP3炎性小体及其下游炎性因子IL-1β/IL-18在类风湿性关节炎(rheumatoid arthritis,RA)患者滑膜被覆细胞及滑膜间质中的表达及分布情况,探讨NLRP3炎症复合体在RA免疫调节中的作用机制。方法采用免疫组化EnVision法检测30例RA...目的检测NLRP3炎性小体及其下游炎性因子IL-1β/IL-18在类风湿性关节炎(rheumatoid arthritis,RA)患者滑膜被覆细胞及滑膜间质中的表达及分布情况,探讨NLRP3炎症复合体在RA免疫调节中的作用机制。方法采用免疫组化EnVision法检测30例RA、10例骨性关节炎(osteoarthritis,OA)患者滑膜被覆细胞及滑膜间质中NLRP3、Caspase-1及其下游炎性因子IL-1β及IL-18的表达。采用Spearman秩相关分析RA患者滑膜组织中NLRP3炎性小体及其下游炎性因子IL-1β/IL-18的表达水平与RA临床和实验室参数的相关性。结果 NLRP3在RA、OA组中的阳性率分别为100.00%和70.00%,Caspase-1在RA、OA组中的阳性率分别为100.00%和50.00%,IL-1β在RA、OA组中的阳性率分别为100.00%和60.00%,IL-18在RA、OA组中的阳性率分别为86.67%和0,NLRP3、Caspase-1、IL-1β及IL-18在RA和OA组间差异均有统计学意义( P <0.05)。IL-1β与RF表达呈显著正相关( P <0.05);NLRP3与CRP、RF、Caspase-1及IL-1β表达均呈显著正相关( P <0.05),而与IL-18表达无相关性( P >0.05)。结论 NLRP3/Caspase-1信号通路因子在RA的发病过程中起重要作用,且与疾病的活动性密切相关。IL-1β的分泌主要是由Caspase-1介导产生,提示抑制NLRP3或Caspase-1可有效下调IL-1β的表达,可能是RA潜在的治疗靶点,具有重要的临床指导意义。展开更多
文摘Summary： The expression and activity of NF-kB in the synovium of collagen-induced arthritis （CIA） rats was detected in order to investigate the possible therapeutic effects of triptolide on rheumatoid arthritis （RA）. The experimental Wistar rat model of CIA was set up by intradermal injection of emulsion of bovine collagen 11 and the successful rate of setting-up models was evaluated by arthritis index （AI）. Rats were grouped randomly into three groups： normal, model and treatment group. The expression of TNF-α and IL-6 in synovial fluid was detected by ELISA, and the expression and activity of NF kB in synovium by immunohistochemistry method and by electrophoretic mobility shift assay （EMSA） respectively. As compared with normal group, the expression of TNF a and IL-6 in synovia （P〈0. 05）, and the expression and activity of NF-kB （P〈0.05） in synovium were increased in model group. There was statistical difference in above-mentioned indexes between model group and treatment group. Triptolide may play a protective role in IRA via downregulating the expression and activity of NF-kB in synovium.
文摘Objective: To test whether the novel tumor-suppressor candidate gene-ndr2 is also differentially expressed between osteoarthritis synovium cells (OASC) and rheumatoid arthritis synovium fibroblasts (RASF), and whether ndr2 can suppress the growth of RASF in vitro. Methods: Dot blotting, cell culture and gene transfection, cell cycle analysis techniques were applied to investigate the effect of ndr2 on the cell phenotype and cell cycles. Results: ndr2 is expressed in OASC but absent in RASF. Transient transfection of ndr2 into RASF can suppress the growth of RASF from phenotype observation. Cell cycle analysis showed that apoptotic peaks can be detected in RASF cells transfected with ndr2 gene. Conclusion: Novel tumor suppressor candidate ndr2 is not only differentially expressed between OASC and RASF but also can induce the apoptosis of RASF in vitro.
基金supported by NIH grants to M Bukrinsky P30 AI117970by the“Creation of Experimental Laboratories in the Natural Sciences Program”and Basic Research Program at the Higher School of Economics University.
文摘Eosinophils are multifunctional granulocytes that contribute to the initiation and modulation of inflammation.Accumulating evidence suggests that eosinophils are adaptable leukocytes that orchestrate the resolution of inflammatory responses.The most prevalent chronic inflammatory illness,rheumatoid arthritis(RA),is typified by persistent synovitis thatmakes it hard for the disease to go away on its own.Interestingly,a unique subset of eosinophils known as regulatory eosinophils has been found in RA patients’synovium,especially while the disease is in remission.Pro-resolving signatures of regulatory eosinophils in the synovium are distinct from those of their lung counterparts.The most recent research on eosinophils and their function in this disease pathogenesis is compiled in this review.Based on the role of regulatory eosinophils,a new pathological model of inflammation resolution in RA is proposed,and potential therapeutic strategies aimed at enhancing the action of regulatory eosinophils in RA are proposed.
文摘RHEUMATOID arthritis (RA) is an autoimmune disease which progressively and systematicallyinvades the joints of bones. A severe chronic situation may lead to the damage of cartilages,bones and tendons and eventually handicap the patients. One of the main histopathological fea-tures of rheumatoid synovium is a marked increase of the thickness and the number of cells inthe synovial lining layer. It is well known that the synovial lining cells secrete many cell fac-
文摘目的检测NLRP3炎性小体及其下游炎性因子IL-1β/IL-18在类风湿性关节炎(rheumatoid arthritis,RA)患者滑膜被覆细胞及滑膜间质中的表达及分布情况,探讨NLRP3炎症复合体在RA免疫调节中的作用机制。方法采用免疫组化EnVision法检测30例RA、10例骨性关节炎(osteoarthritis,OA)患者滑膜被覆细胞及滑膜间质中NLRP3、Caspase-1及其下游炎性因子IL-1β及IL-18的表达。采用Spearman秩相关分析RA患者滑膜组织中NLRP3炎性小体及其下游炎性因子IL-1β/IL-18的表达水平与RA临床和实验室参数的相关性。结果 NLRP3在RA、OA组中的阳性率分别为100.00%和70.00%,Caspase-1在RA、OA组中的阳性率分别为100.00%和50.00%,IL-1β在RA、OA组中的阳性率分别为100.00%和60.00%,IL-18在RA、OA组中的阳性率分别为86.67%和0,NLRP3、Caspase-1、IL-1β及IL-18在RA和OA组间差异均有统计学意义( P <0.05)。IL-1β与RF表达呈显著正相关( P <0.05);NLRP3与CRP、RF、Caspase-1及IL-1β表达均呈显著正相关( P <0.05),而与IL-18表达无相关性( P >0.05)。结论 NLRP3/Caspase-1信号通路因子在RA的发病过程中起重要作用,且与疾病的活动性密切相关。IL-1β的分泌主要是由Caspase-1介导产生,提示抑制NLRP3或Caspase-1可有效下调IL-1β的表达,可能是RA潜在的治疗靶点,具有重要的临床指导意义。
