目的研究薏苡仁酯对胶原诱导性关节炎(collagen induced arthritis,CIA)小鼠外周血中Foxp3+CD4+CD25+调节性T细胞(Treg)的影响,探讨薏苡仁酯类风湿关节炎治疗中的可能机制。方法从25只小鼠随机选取5只为正常组,剩余20只小鼠进行CIA造模...目的研究薏苡仁酯对胶原诱导性关节炎(collagen induced arthritis,CIA)小鼠外周血中Foxp3+CD4+CD25+调节性T细胞(Treg)的影响,探讨薏苡仁酯类风湿关节炎治疗中的可能机制。方法从25只小鼠随机选取5只为正常组,剩余20只小鼠进行CIA造模。造模成功后随机分为造模对照组10只及薏苡仁酯组10只。薏苡仁酯组予薏苡仁酯注射液25 m L/kg,正常组及造模对照组注射生理盐水25 m L/kg,均每天腹腔内注射1次。共用药21天。用药后对各组关节炎进行评分,计算关节炎指数,并应用流式细胞术测定小鼠外周血Foxp3+CD4+CD25+Treg比例。结果与正常组比较,造模对照组关节炎指数明显升高(P<0.01),薏苡仁酯组较造模对照组小鼠关节炎指数明显下降(P<0.01)。与正常组比较,造模对照组Foxp3+CD4+CD25+Treg水平均明显下降(P<0.01),薏苡仁酯组较造模对照组用药后Foxp3+CD4+CD25+Treg水平明显升高,差异有统计学意义(P<0.01)。结论薏苡仁酯能上调CIA小鼠Foxp3+CD4+CD25+Treg比例,可能在CIA的发病中具有一定的免疫调节作用。展开更多
AIM:To investigate the effect of probiotics on regulating T regulatory cells and reducing the severity of experimental colitis in mice. METHODS:Forty C57/BL mice were randomly divided into four groups.Colitis was indu...AIM:To investigate the effect of probiotics on regulating T regulatory cells and reducing the severity of experimental colitis in mice. METHODS:Forty C57/BL mice were randomly divided into four groups.Colitis was induced in the mice using 2,4,6-trinitrobenzene sulfonic acid(TNBS).After 10-d treatment with Bifico capsules(combined bifidobacterium,lactobacillus and enterococcus),body weight,colonic weight,colonic weight index,length of colon,and histological scores were evaluated.CD4+CD25+Foxp3+T cell in mesenteric lymph nodes were measured by flow cytometry,and cytokines in colonic tissue homogenateswere analyzed by a cytometric bead array. RESULTS:The colonic weight index and the colonic weight of colitis mice treated with Bifico were lower than that of TNBS-induced mice without treatment. However,colonic length and percent of body weight amplification were higher than in TNBS-induced mice without treatment.Compared with TNBS-induced mice without treatment,the level of CD4+CD25+Foxp3+T cells in mesenteric lymph nodes,the expression of interleukin(IL)-2,IL-4 and IL-10 in colonic tissues from colitis mice treated with Bifico were upregulated,and tumor necrosis factor-αand interferon-γwere downregulated. CONCLUSION:Probiotics effectively treat experimental colitis by increasing CD4+CD25+Foxp3+T cell and regulating the balance of Th1 and Th2 cytokines in the colonic mucosa.展开更多
文摘目的研究薏苡仁酯对胶原诱导性关节炎(collagen induced arthritis,CIA)小鼠外周血中Foxp3+CD4+CD25+调节性T细胞(Treg)的影响,探讨薏苡仁酯类风湿关节炎治疗中的可能机制。方法从25只小鼠随机选取5只为正常组,剩余20只小鼠进行CIA造模。造模成功后随机分为造模对照组10只及薏苡仁酯组10只。薏苡仁酯组予薏苡仁酯注射液25 m L/kg,正常组及造模对照组注射生理盐水25 m L/kg,均每天腹腔内注射1次。共用药21天。用药后对各组关节炎进行评分,计算关节炎指数,并应用流式细胞术测定小鼠外周血Foxp3+CD4+CD25+Treg比例。结果与正常组比较,造模对照组关节炎指数明显升高(P<0.01),薏苡仁酯组较造模对照组小鼠关节炎指数明显下降(P<0.01)。与正常组比较,造模对照组Foxp3+CD4+CD25+Treg水平均明显下降(P<0.01),薏苡仁酯组较造模对照组用药后Foxp3+CD4+CD25+Treg水平明显升高,差异有统计学意义(P<0.01)。结论薏苡仁酯能上调CIA小鼠Foxp3+CD4+CD25+Treg比例,可能在CIA的发病中具有一定的免疫调节作用。
基金Supported by The Project of Science and Technology Project from Department of Education of Jiangxi Province,No.GJJ1056
文摘AIM:To investigate the effect of probiotics on regulating T regulatory cells and reducing the severity of experimental colitis in mice. METHODS:Forty C57/BL mice were randomly divided into four groups.Colitis was induced in the mice using 2,4,6-trinitrobenzene sulfonic acid(TNBS).After 10-d treatment with Bifico capsules(combined bifidobacterium,lactobacillus and enterococcus),body weight,colonic weight,colonic weight index,length of colon,and histological scores were evaluated.CD4+CD25+Foxp3+T cell in mesenteric lymph nodes were measured by flow cytometry,and cytokines in colonic tissue homogenateswere analyzed by a cytometric bead array. RESULTS:The colonic weight index and the colonic weight of colitis mice treated with Bifico were lower than that of TNBS-induced mice without treatment. However,colonic length and percent of body weight amplification were higher than in TNBS-induced mice without treatment.Compared with TNBS-induced mice without treatment,the level of CD4+CD25+Foxp3+T cells in mesenteric lymph nodes,the expression of interleukin(IL)-2,IL-4 and IL-10 in colonic tissues from colitis mice treated with Bifico were upregulated,and tumor necrosis factor-αand interferon-γwere downregulated. CONCLUSION:Probiotics effectively treat experimental colitis by increasing CD4+CD25+Foxp3+T cell and regulating the balance of Th1 and Th2 cytokines in the colonic mucosa.
