AIM: To determine the anti-inflammatory activity of probiotic Bifidobacteria in Bifidobacteria-fermented milk (BFM) which is effective against active ulcerative colitis (UC) and exacerbations of UC, and to explore the...AIM: To determine the anti-inflammatory activity of probiotic Bifidobacteria in Bifidobacteria-fermented milk (BFM) which is effective against active ulcerative colitis (UC) and exacerbations of UC, and to explore the immunoregulatory mechanisms. METHODS: Peripheral blood mononuclear cells (PBMNC) from UC patients or HT-29 cells were co-cultured with heat-killed probiotic bacteria or culture supernatant of Bifidobacterium breve strain Yakult (BbrY) or Bifidobacterium bifidum strain Yakult (BbiY) to estimate the amount of IL-10 or IL-8 secreted. RESULTS: Both strains of probiotic Bifidobacteria contained in the BFM induced IL-10 production in PBMNC from UC patients, though BbrY was more effective than BbiY. Conditioned medium (CM) and DNA of both strains inhibited IL-8 secretion in HT-29 cells stimulated with TNF-α, whereas no such effect was observed with heat- killed bacteria. The inhibitory effect of CM derived from BbiY was greater than that of CM derived from BbrY. DNAs of the two strains had a comparable inhibitory activity against the secretion of IL-8. CM of BbiY induced a repression of IL-8 gene expression with a higher expression of IκB-ζ mRNA 4 h after culture of HT-29 cells compared to that in the absence of CM.CONCLUSION: Probiotic Bifidobacterium strains in BFM enhance IL-10 production in PBMNC and inhibit IL-8 secretion in intestinal epithelial cells, suggesting that BFM has anti-inflammatory effects against ulcerative colitis.展开更多
目的探讨代谢综合征(MS)患者胰岛素抵抗(IR)与血清白介素10(IL-10)水平的关系。方法 MS患者及年龄相匹配的正常对照组各18例。以高胰岛素-正常血糖钳夹技术检测葡萄糖代谢率(M值),评价IR程度:采用酶联免疫吸附法检测血清IL-10水平,用Pea...目的探讨代谢综合征(MS)患者胰岛素抵抗(IR)与血清白介素10(IL-10)水平的关系。方法 MS患者及年龄相匹配的正常对照组各18例。以高胰岛素-正常血糖钳夹技术检测葡萄糖代谢率(M值),评价IR程度:采用酶联免疫吸附法检测血清IL-10水平,用Pearson相关分析法分析血清IL-10水平与M值的相关性。结果 MS组M值显著低于对照组[(5．76±1．81)mg／kg·min vs (8．39±1．25)mg／kg·mim,P<0．05];MS组血清IL-10水平显著低于对照组[1．3(0．8／3．1) pg／ml vs 2．4(1．1／4．5)pg/ml,P<0．05];Pearson相关分析法显示血清IL-10水平与M值正相关(P<0．05)。结论 MS患者血清IL-10水平降低,可能与IR的发生有关。展开更多
目的探讨汉族广东地区人群白细胞介素-1β(IL-1β)、肿瘤坏死因子-β(TNFβ)及白细胞介素-10(IL-10)三种炎症细胞因子的基因多态性与血脂水平的关系。方法应用聚合酶链反应-限制性片段长度多态性(PCR-RFLP)技术对428例中国广东地区汉族...目的探讨汉族广东地区人群白细胞介素-1β(IL-1β)、肿瘤坏死因子-β(TNFβ)及白细胞介素-10(IL-10)三种炎症细胞因子的基因多态性与血脂水平的关系。方法应用聚合酶链反应-限制性片段长度多态性(PCR-RFLP)技术对428例中国广东地区汉族人群受检样本进行IL-1β+3953、TNF-β+252及IL-10-592位点的基因型检测。按常规法检测总胆固醇(TC)、甘油三酯(TG)、高密度脂蛋白胆固醇(HDL)、LDL和极低密度脂蛋白(VLDL)血清浓度。结果IL-1β+3953位点各基因型间(CC、CT、TT),低密度脂蛋白(LDL)浓度的差异有显著性(F=3.628,P=0.028),CT基因型携带者LDL浓度高于CC型携带者(2.743±0.723 mmol/L vs 2.502±0.699 mmol/L,t=-2.639,P=0.009);TNFβ+252位点AG基因型携带者的总胆固醇(TC)、LDL浓度高于AA型(t=-2.406,P=0.017;t=-2.516,P=0.012);IL-10-592位点基因型间(AA、CA、CC)的血脂水平差异均无统计学意义(P>0.05)。结论炎症细胞因子基因多态性与血脂水平有关,IL-1β+3953位点T等位基因和TNFβ+252位点G等位基因与高脂血症易感性相关。展开更多
Objective： To study the influence of Yanyankang Powder （眼炎康散） on Th1/Th2 in rats with experimental autoimmune uveitis （EAU）. Methods： The EAU models were induced in Lewis rats by immunization with interphoto...Objective： To study the influence of Yanyankang Powder （眼炎康散） on Th1/Th2 in rats with experimental autoimmune uveitis （EAU）. Methods： The EAU models were induced in Lewis rats by immunization with interphotoreceptor retinoid binding protein （IRBP） 1177-1191 in complete Freund＇s adjuvant. The rats were randomly divided into 3 groups： a model control group, a Yanyankang group, and a prednisone group, 9 rats in each group. The model control group was intervened with saline solution by gavage. The Yanyankang group was intervened with Yanyankang Powder 4 g/（kg·day） by gavage. The prednisone group were intervened with prednisone acetate tablets 5 mg/（kg·d） by gavage. All groups were intervened after immunization once every 2 days for 18 days and monitored by slit-lamp biomicroscopy daily until day 18. The levels of gamma interferon （INF-γ） and interleukin-10 （IL-10） in the supernatants of T cells were determined by enzyme-linked immunosorbent assay. Polymerase chain reaction （PCR） technology was used for measuring Thl and Th2 related cytokine mRNA expressions. Results： Slighter intraocular inflammation was found in the Yanyankang group and the prednisone group than the control group. The levels of the IFN-γ and IL-10 in the supernatants of the spleen lymph node cells were 382.33±6.30, 155.87±4.46 μg/L in the Yanyankang group and 270.93 ± 7.76, 265.32 ± 11.88 μg/L in the prednisone group. Both had significant differences compared with the control group （941.53± 8.59, 20.67± 4.65 μg/L; P=0.01）. The PCR results showed the same tendency. Conclusion： Yanyankang Powder showed favorable effects in the rats with EAU by influencing the function of Th1 and Th2 cells.展开更多
Mesenchymal stem cells have been previously shown to exert an immunomodulatory function. The present study sought to investigate the effects of multipotential human adipose tissue-derived mesenchymal stem cells （hAdM...Mesenchymal stem cells have been previously shown to exert an immunomodulatory function. The present study sought to investigate the effects of multipotential human adipose tissue-derived mesenchymal stem cells （hAdMSCs） on disease progression and cytokine expression in Lewis rats with experimental autoimmune encephalomyelitis （EAE） induced by myelin basic protein. The duration of EAE paralysis in the group treated on day 7 posfimmunization with 5 × 10^6 hAdMSCs was significantly reduced compared with the vehicle-treated controls and the 1 x 106 hAdMSC- treated group. The duration of EAE paralysis in the groups treated with 5 × 10^6 hAdMSCs on both day 1 and day 7 postimmunization was significantly reduced compared with the vehicle-treated controls and the groups treated with 5 × 10^6 hAdMSCs on both day 7 and day 10 postimmunization. The mRNA expression of interleukin-10 and indoleamine 2, 3-dioxygenase was significantly decreased in the hAdMSC-treated group compared with the vehicle-treated group. These findings suggest that the ameliorative effects of hAdMSCs on EAE symptoms operate in a dose- and time-dependent manner and can be mediated in part by the ample production of anti-inflammatory cytokines.展开更多
文摘AIM: To determine the anti-inflammatory activity of probiotic Bifidobacteria in Bifidobacteria-fermented milk (BFM) which is effective against active ulcerative colitis (UC) and exacerbations of UC, and to explore the immunoregulatory mechanisms. METHODS: Peripheral blood mononuclear cells (PBMNC) from UC patients or HT-29 cells were co-cultured with heat-killed probiotic bacteria or culture supernatant of Bifidobacterium breve strain Yakult (BbrY) or Bifidobacterium bifidum strain Yakult (BbiY) to estimate the amount of IL-10 or IL-8 secreted. RESULTS: Both strains of probiotic Bifidobacteria contained in the BFM induced IL-10 production in PBMNC from UC patients, though BbrY was more effective than BbiY. Conditioned medium (CM) and DNA of both strains inhibited IL-8 secretion in HT-29 cells stimulated with TNF-α, whereas no such effect was observed with heat- killed bacteria. The inhibitory effect of CM derived from BbiY was greater than that of CM derived from BbrY. DNAs of the two strains had a comparable inhibitory activity against the secretion of IL-8. CM of BbiY induced a repression of IL-8 gene expression with a higher expression of IκB-ζ mRNA 4 h after culture of HT-29 cells compared to that in the absence of CM.CONCLUSION: Probiotic Bifidobacterium strains in BFM enhance IL-10 production in PBMNC and inhibit IL-8 secretion in intestinal epithelial cells, suggesting that BFM has anti-inflammatory effects against ulcerative colitis.
文摘目的探讨代谢综合征(MS)患者胰岛素抵抗(IR)与血清白介素10(IL-10)水平的关系。方法 MS患者及年龄相匹配的正常对照组各18例。以高胰岛素-正常血糖钳夹技术检测葡萄糖代谢率(M值),评价IR程度:采用酶联免疫吸附法检测血清IL-10水平,用Pearson相关分析法分析血清IL-10水平与M值的相关性。结果 MS组M值显著低于对照组[(5．76±1．81)mg／kg·min vs (8．39±1．25)mg／kg·mim,P<0．05];MS组血清IL-10水平显著低于对照组[1．3(0．8／3．1) pg／ml vs 2．4(1．1／4．5)pg/ml,P<0．05];Pearson相关分析法显示血清IL-10水平与M值正相关(P<0．05)。结论 MS患者血清IL-10水平降低,可能与IR的发生有关。
文摘目的探讨汉族广东地区人群白细胞介素-1β(IL-1β)、肿瘤坏死因子-β(TNFβ)及白细胞介素-10(IL-10)三种炎症细胞因子的基因多态性与血脂水平的关系。方法应用聚合酶链反应-限制性片段长度多态性(PCR-RFLP)技术对428例中国广东地区汉族人群受检样本进行IL-1β+3953、TNF-β+252及IL-10-592位点的基因型检测。按常规法检测总胆固醇(TC)、甘油三酯(TG)、高密度脂蛋白胆固醇(HDL)、LDL和极低密度脂蛋白(VLDL)血清浓度。结果IL-1β+3953位点各基因型间(CC、CT、TT),低密度脂蛋白(LDL)浓度的差异有显著性(F=3.628,P=0.028),CT基因型携带者LDL浓度高于CC型携带者(2.743±0.723 mmol/L vs 2.502±0.699 mmol/L,t=-2.639,P=0.009);TNFβ+252位点AG基因型携带者的总胆固醇(TC)、LDL浓度高于AA型(t=-2.406,P=0.017;t=-2.516,P=0.012);IL-10-592位点基因型间(AA、CA、CC)的血脂水平差异均无统计学意义(P>0.05)。结论炎症细胞因子基因多态性与血脂水平有关,IL-1β+3953位点T等位基因和TNFβ+252位点G等位基因与高脂血症易感性相关。
基金Supported by the National Natural Science Foundation of China(No.81072961,81100658 and 81373826)the National Science Foundation for Post-doctoral Scientists of China(No.2012M510068)
文摘Objective： To study the influence of Yanyankang Powder （眼炎康散） on Th1/Th2 in rats with experimental autoimmune uveitis （EAU）. Methods： The EAU models were induced in Lewis rats by immunization with interphotoreceptor retinoid binding protein （IRBP） 1177-1191 in complete Freund＇s adjuvant. The rats were randomly divided into 3 groups： a model control group, a Yanyankang group, and a prednisone group, 9 rats in each group. The model control group was intervened with saline solution by gavage. The Yanyankang group was intervened with Yanyankang Powder 4 g/（kg·day） by gavage. The prednisone group were intervened with prednisone acetate tablets 5 mg/（kg·d） by gavage. All groups were intervened after immunization once every 2 days for 18 days and monitored by slit-lamp biomicroscopy daily until day 18. The levels of gamma interferon （INF-γ） and interleukin-10 （IL-10） in the supernatants of T cells were determined by enzyme-linked immunosorbent assay. Polymerase chain reaction （PCR） technology was used for measuring Thl and Th2 related cytokine mRNA expressions. Results： Slighter intraocular inflammation was found in the Yanyankang group and the prednisone group than the control group. The levels of the IFN-γ and IL-10 in the supernatants of the spleen lymph node cells were 382.33±6.30, 155.87±4.46 μg/L in the Yanyankang group and 270.93 ± 7.76, 265.32 ± 11.88 μg/L in the prednisone group. Both had significant differences compared with the control group （941.53± 8.59, 20.67± 4.65 μg/L; P=0.01）. The PCR results showed the same tendency. Conclusion： Yanyankang Powder showed favorable effects in the rats with EAU by influencing the function of Th1 and Th2 cells.
文摘Mesenchymal stem cells have been previously shown to exert an immunomodulatory function. The present study sought to investigate the effects of multipotential human adipose tissue-derived mesenchymal stem cells （hAdMSCs） on disease progression and cytokine expression in Lewis rats with experimental autoimmune encephalomyelitis （EAE） induced by myelin basic protein. The duration of EAE paralysis in the group treated on day 7 posfimmunization with 5 × 10^6 hAdMSCs was significantly reduced compared with the vehicle-treated controls and the 1 x 106 hAdMSC- treated group. The duration of EAE paralysis in the groups treated with 5 × 10^6 hAdMSCs on both day 1 and day 7 postimmunization was significantly reduced compared with the vehicle-treated controls and the groups treated with 5 × 10^6 hAdMSCs on both day 7 and day 10 postimmunization. The mRNA expression of interleukin-10 and indoleamine 2, 3-dioxygenase was significantly decreased in the hAdMSC-treated group compared with the vehicle-treated group. These findings suggest that the ameliorative effects of hAdMSCs on EAE symptoms operate in a dose- and time-dependent manner and can be mediated in part by the ample production of anti-inflammatory cytokines.
