间歇低氧-肺气肿大鼠的炎症及免疫反应特点研究  

Inflammatory and immune responses in a rat model of intermittent hypoxia- emphysema

作　　者：韩双羽 李彩丽[2] 冯靖[2] 王玉宝[1] 

机构地区：[1]天津医科大学第二医院感染性疾病研究所,300211 [2]天津医科大学总医院呼吸科

出　　处：《天津医药》2016年第1期14-18,共5页Tianjin Medical Journal

基　　金：国家自然科学基金资助项目(81270144,30800507,81170071)

摘　　要：目的建立间歇低氧(IH)-肺气肿大鼠模型,探讨其引起炎症和免疫反应的特点。方法 60只Wistar大鼠随机分成对照组、肺气肿组、IH组和重叠组(肺气肿合并IH组)。每组15只。造模成功后使用流式细胞仪测定各组外周血中性粒细胞(PMN)、CD3^+CD8^+T细胞、CD3^+CD4^+T细胞凋亡率水平。酶联免疫吸附试验(ELISA)法测定血浆中肿瘤坏死因子(TNF)-α、白细胞介素(IL)-6水平。取大鼠肺泡灌洗液(BALF),在光镜下计算巨噬细胞、外周血PMN和淋巴细胞比例。采集肺、肝脏、胰腺组织和右颈动脉并进行病理评分。结果重叠组中PMN、CD3^+CD8^+T细胞凋亡率与其他3组相比较低,CD3^+CD4^+T细胞凋亡率、TNF-α、IL-6表达水平最高(均P<0.05)。BALF中,肺气肿组巨噬细胞和PMN百分比高于其余3组(均P<0.05)。重叠组中肺、肝脏、胰腺、右颈动脉内中膜厚度的病理评分高于其他3组(均P<0.05)。结论肺气肿合并IH可产生更严重的系统性多器官炎症和免疫反应。Objective To develop an ＂overlap syndrome （OS）＂ rat model by intermittent hypoxia （IH） exposure on the base of pre-existing emphysema, and to explore its characters of severe systemic inflammation and immune responses. Methods Sixty Wistar rats were put into four groups： control group, IH group, emphysema group and overlap （emphysema＋ IH） group. The peripheral blood samples were collected for detecting apoptosis of CD3＋CD4＋, CD3＋CD8＋ T lymphocytes and ueutrophils （PMN）. Tumor necrosis factor （TNF）-α and interleukin （IL）-6 were evaluated by ELISA. The bronehoalveolar la- vage fluid （BALF） was taken to calculate the ratio of macrophages, neutrophils and lymphocytes under light microscope. Tis- sue blocks of lung, liver, pancreas, and right carotid artery were taken for pathologic scoring. Results The apoptotie rates of PMN and CD3 ＋ CD8 ＋ T cells were significantly lower in overlap group than those of other three groups （P 〈 0.05）. Pro-in- flammatory factor IL-6, TNF-α and peripheral blood CD3 ＋ CD4 ＋ T cell apoptosis were the highest in overlap group com- pared to those of other three groups （P 〈 0.05）. The ratio of PMN and maerophages in BALF were significantly higher in em- physema group than those of other three groups （P 〈 0.05） and the pathology scores of lung, liver, pancreas, the ratio of carot- id artery intima-media thickness of whole thickness of vascular were significantly higher in overlap group than those of other three groups （P 〈 0.05）.Conclusion In rat model of intermittent hypoxia-emphysema there are more serious systemic multi-organ inflammation and immune responses.

关 键 词：肺气肿 炎症 免疫 间歇低氧 重叠综合征 

分 类 号：R563.3[医药卫生—呼吸系统]