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作 者:陈小奇[1] 徐焱成[1] 邓浩华[1] 孙家忠[1] 代喆[1] 吴玉文[1] 杨杪[1]
出 处:《中华糖尿病杂志》2011年第6期472-477,共6页CHINESE JOURNAL OF DIABETES MELLITUS
基 金:国家自然科学基金面上项目(30871188)
摘 要:目的阐明1型糖尿病患者自身免疫反应与辅助性Th17T细胞的关系及其机制。方法选取2009年1月至2010年12月在武汉大学中南医院内分泌科诊治的门诊和住院1型糖尿病患者39例[1型糖尿病组,男21例,女18例,平均年龄(31±13)岁],另选择同期在武汉大学中南医院体检的健康志愿者36名[健康对照组,男19名,女17名,平均年龄(29±12)岁]和内分泌科收治的住院2型糖尿病患者40例[2型糖尿病组,男28例,女12例,平均年龄(36±8)岁]。采用流式细胞仪检测外周血Th17辅助性T细胞比例,应用荧光实时定量聚合酶链反应检测外周血单核细胞RORγt基因表达,运用酶联免疫吸附法检测血浆白细胞介素.17A和B细胞活化因子水平。采用t检验进行组间数据比较。结果1型糖尿病组Th17辅助性T细胞含量[(4.2±0.8)%VS(1.8±0.6)%,t=8.338,P=0.005]、血浆白细胞介素-17A水平[(2.42±0.24)VS(1.37±0.37)ng/L,t=5.601,P=0.021]、RORγt mRNA表达(5.0±1.3VS1.4±1.0,t=38.959,P=0.000)、B细胞活化因子水平[(91±5)VS(66±8)ng/L,t=6.211,P:0.015]显著高于健康对照组。偏相关分析显示,在1型糖尿病组中,B细胞活化因子与白细胞介素-17A水平呈显著正相关(r=0.623,P=0.000)。多元逐步回归分析显示,Th17辅助性T细胞与1型糖尿病患者空腹C肽水平呈显著负相关(r=-0.069,P=0.011)。结论Th17辅助性T细胞分泌的白细胞介素-17A可能通过促进B细胞活化因子的分泌影响B细胞的存活,参与1型糖尿病的发生。Objective To assess the role of Thl7 cells in the development of type 1 diabetes mellitus (T1DM). Methods Thirty-nine T1DM patients (T1DM group, 21 males, 18 females, mean age (31 ± 13 ) years), 40 type 2 diabetes mellitus (T2DM) patients ( T2DM group, 28 males, 12 females, mean age (36± 8) years) and 36 healthy volunteers (control group, 19 males, 17 females, mean age (29 ± 12) years) admitted to our hospital during January 2009 and December 2010 were enrolled in this study. Plasma levels of interleukin-17A (IL-17A) and B cell activating factor were measured by enzyme- linked immunosorbent assay (ELISA) and the frequency of Thl7 cells in peripheral blood mononuclear cells was tested by flow cytometry. The expressions of RORγt gene was measured by real-time quantitative polymerase chain reaction, t test was used for data analysis. Results In comparison with the control group, Thl7 cells ((4.2±0.8)% vs (1.8±0.6)%, t=8.338, P=0.005), IL-17Alevel ((2.42±0.24) vs (1.37 ±0. 37) ng/L, t = 5. 601, P = 0. 021) , ROR'yt mRNA expression (5.0± 1.3 vs 1.4 ± 1.0, t = 38. 959, P =0. 000), and B cell activating factor ( (91±5) vs (66 ±8) ng/L, t =6. 211, P =0. 015) of the T1DM group were increased. Partial two-tailed correlation analysis showed that there was a positive correlation between IL-17A and B cell activating factor in the T1DM group ( r = 0. 623, P = 0. 000). Step- wise linear regression analysis indicated that Th17 ceils was negatively correlated with fasting C-peptide (r = -0. 069,P = 0. 011 ). Conclusion Th17 cells might play a role in the development of T1DM through stimulating B cell activating factor.
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