天津医药 ›› 2016, Vol. 44 ›› Issue (1): 23-25.doi: 10.11958/20150210

• 专题研究呼吸系统疾病 • 上一篇    下一篇

气道上皮细胞紧密连接在小鼠哮喘中的病理学改变

李凡1 , 吴琦2△, 孙昕2 , 李宽2 , 张颖超3 , 李雪2 , 李玉2 , 张秋阳2 , 徐龙2 , 陈怀永2   

  1. 1天津医科大学 (邮编300070); 2天津市海河医院基础医学实验部; 3天津市宝坻区人民医院呼吸科
  • 收稿日期:2015-10-10 修回日期:2015-10-28 出版日期:2016-01-15 发布日期:2016-01-15
  • 通讯作者: △通讯作者 E-mail:wq572004@163.com E-mail:904553077@qq.com
  • 作者简介:李凡 (1990), 女, 硕士在读, 主要从事呼吸病学研究
  • 基金资助:
    国家自然科学基金面上项目 (31471121); 天津市科委基础项目 (14JCYBJC25700, 13JCYBJC40000)

The pathological changes in airway epitheilal tight junctions in mouse model with asthma

LI Fan1 , WU Qi 2△, SUN Xin2 , LI Kuan2 , ZHANG Yingchao3 , LI Xue2 , LI Yu2 , ZHANG Qiuyang2 , XU Long2 , CHEN Huaiyong2   

  1. 1 Tianjin Medical University, Tianjin 300070, China; 2 Department of Basic Medical Research,Tianjin Haihe Hospital; 3 Department of Respiratory, Tianjin Baodi Hospital
  • Received:2015-10-10 Revised:2015-10-28 Published:2016-01-15 Online:2016-01-15
  • Contact: △Corresponding Author E-mail: wq572004@163.com E-mail:904553077@qq.com

摘要: 摘要: 目的 探讨小鼠支气管哮喘 (哮喘) 中气道上皮紧密连接的病理学改变。方法 10 只小鼠随机分为对照组和哮喘组, 每组 5 只。哮喘组于第 0、 7 天腹腔注射鸡卵清蛋白 (OVA) 溶液, 在第 14、 15、 16 天以雾化的 OVA 熏诱小鼠, 1 h/次、 1 次/d; 对照组用 PBS 溶液替代 OVA; 2 组小鼠在第 18 天回收肺组织, 采用免疫荧光染色法评价小鼠哮喘模型的有效性, 荧光定量 PCR检测紧密连接相关蛋白基因Claudin 1、 Claudin 3、 Claudin 4、 Claudin 5、 Claudin 7、 Clau⁃ din 10在肺组织中的表达。结果 哮喘组 Claudin 3、 Claudin 4、 Claudin 10 mRNA 水平较对照组低 (P<0.05), 而 Clau⁃ din 1、 Claudin 5、 Claudin 7 mRNA 水平与对照组比较差异无统计学意义 (P>0.05)。结论 哮喘病理过程中气道上皮细胞紧密连接松散, 提示气道上皮屏障破坏。

关键词: 哮喘;, 连接蛋白类;, 气道上皮黏膜; , 钙激活氯离子通道蛋白3; , 紧密连接蛋白; , Claudin 3

Abstract: Abstract: Objective To investigate the pathological changes of airway epithelium mucosa in asthmatic mice. Meth⁃ ods Ten mice were divided into two groups: control group and asthma group, five mice in each group. Asthma group was sensitized with chicken ovalbumin (OVA) by intraperitoneal injection on day 0 and 7. Mice were then challenged with OVA on day 14, 15, and 16, 1 hour each time, once a day. Control group was given PBS solution instead of OVA. Lungs were col⁃ lected at day 18 in two groups. Immunofluorescence staining was used to evaluate asthmatic mouse model. Quantitative PCR was applied to detect the expression of Claudin 1, Claudin 3, Claudin 4, Claudin 5, Claudin 7 and Claudin 10 in lung tissues. Results The expressions of Claudin 3, Claudin 4 and Claudin 10 were significantly lower in asthma group than those in control group (P < 0.05). There were no significant differences in Claudin 1, Claudin 5 and Claudin 7 mRNA levels between control group and asthma group (P > 0.05). Conclusion Tight junctions of airway epithelium are loosed in asthma, suggest⁃ ing that epithelial permeability is increased.

Key words: asthma, connexins;, airway epithelium, chloride channel, calcium activated, family member 3;, tight junc? tion protein, Claudin 3