非肥胖性糖尿病（NOD）小鼠糖尿病发病过程中 B10细胞水平的研究 蒋瑞妹;秦瑶;许馨予;陈恒;杨涛;张梅 【期刊名称】《中华微生物学和免疫学杂志》 【年(卷),期】2014(000)011 【摘 要】目的：观察非肥胖性糖尿病（ non-obese diabetic， NOD）小鼠自然病程不同阶段CD19＋CD5＋CD1dhigh B细胞及Th1、Th17细胞数量的变化，探讨B10细胞与NOD小鼠自身免疫性糖尿病发生的关系。方法采用流式细胞术分别检测4周（A组，n＝10）、8周（B组，n＝10）及糖尿病（C组，n＝10）NOD小鼠及同龄C57BL／6小鼠（对照组，n＝20）脾脏、肠系膜淋巴结、外周淋巴结、胰腺淋巴结中CD19＋CD5＋CD1dhigh B、CD19＋IL-10＋B、CD4＋IFN-γ＋Th1、CD4＋IL-17＋Th17细胞及CD4＋CD25＋Foxp3＋T细胞的比例；分离NOD小鼠胰腺组织作病理切片以评估胰岛炎的严重程度。结果（1）胰腺组织HE切片：A组无胰岛炎，4周；B组发生胰岛炎，8周；C组发生明显胰岛炎且无完整胰岛，糖尿病。（2）不同病程阶段NOD小鼠B10细胞比较：B及C组B10细胞较A组增高，而C组B10细胞则较B组显著下降，差异有统计学意义（P＜0．01）；A组B10细胞各组织间无明显差异（P＞0．05），B组B10细胞以胰腺淋巴结最高，C组B10细胞以外周淋巴结最高且胰腺淋巴结B10细胞较B组显著下降，差异有统计学意义（P＜0．01）。（3）不同病程阶段NOD小鼠效应性T细胞比较：C组Th1及Th17细胞较A、B组显著增加，差异有统计学意义（P＜0．01）。（4）不同病程阶段CD4＋CD25＋Foxp3＋T细胞比较：C组Treg较A、B组无明显变化，且NOD小鼠Treg较同龄C57BL／6小鼠亦无明显变化（ P＞0．05）。结论随NOD小鼠年龄增长及胰岛炎进展，B10细胞存在数量变化及组织分布的差异；B10细胞数量减少可能参与NOD小鼠自身免疫性糖尿病的发生。%Objective To study the alterations of CD19+CD5+CD1dhigh B, Th1 and Th17 cells in non-obese diabetic ( NOD) mice and the correlation between B10 cells and type 1 diabetes in NOD mice. Methods Flow cytometry ( FCM) was used to measure the levels of CD19+CD5+CD1dhigh B, CD19+IL-10+B, CD4+IFN-γ+Th1, CD4+IL-17+Th17 and CD4+CD25+Foxp3+T cells in NOD mice ( 4 weeks old NOD mice:group A, n=10;8 weeks old NOD mice:group B, n=10; NOD mice with diabetes: group C, n=10) and age-matched C57BL/6 mice ( control group, n=20 ) .Hematoxylin-eosin staining of pancreatic tissues was performed for histopathological assessment of the development of insulitis in NOD mice.Results (1) Histopathological analysis showed that mice from A, B and C groups respectively showed no insulitis, insulitis and obvious insulitis with no intact islets.(2) The highest levels of B10 cells in NOD mice were ob-served in group B, followed by those in group C and group A (P<0.01).No significant differences with the levels of B10 cells were found among different tissues of 4 weeks old NOD mice (P>0.05).More B10 cells were detected in pancreatic lymph nodes than in other tissues of 8 weeks old NOD mice, the levels of which were also higher than those in pancreatic lymph nodes of mice form group C ( P<0.01) .The highest levels of B10 cells were detected in peripheral lymph nodes among all tissues samples collected from NOD mice with diabetes (P<0.01).(3) The levels of Th1 and Th17 cells in mice from group C were remarkably in-creased as compared with those in mice from group A and B (P<0.01).(4) The percentages of CD4+CD25+Foxp3+T cells in mice from group C showed no differences with those in mice from A and B groups. No significant difference with Treg cells were observed between NOD mice and age-matched C57BL/6 mice (P>0.05).Conclusion The percentages and distribution of B10 cells in NOD mice changed with age and the development of insulitis.The decrease of B10 cells might participate in the development of type 1 diabe-tes in NOD mice. 【总页数】9页(P830-838) 【作 者】蒋瑞妹;秦瑶;许馨予;陈恒;杨涛;张梅 【作者单位】210029 南京医科大学第一附属医院内分泌科;210029 南京医科大学第一附属医院内分泌科;210029 南京医科大学第一附属医院内分泌科;210029 南京医科大学第一附属医院内分泌科;210029 南京医科大学第一附属医院内分泌科;210029 南京医科大学第一附属医院内分泌科 【正文语种】中 文 【相关文献】 1.B10细胞与非肥胖型糖尿病小鼠自身免疫性糖尿病发生的关系研究2.聚肌苷酸-聚胞苷酸阻止非肥胖性糖尿病发病机制的研究3.建立非肥胖型糖尿病/重症联合免疫缺陷(NOD/SCID)小鼠人白血病模型的实验研究4.小儿肥胖症与糖尿病发病率的相关性研究5.NOD/Ltj小鼠Ⅰ型糖尿病不同发病阶段细胞免疫状态研究 因版权原因，仅展示原文概要，查看原文内容请购买 本文来源：https://www.wddqw.com/doc/fdea7d62b62acfc789eb172ded630b1c59ee9bc1.html