Sci Rep:Occludin和claudin-7表达降低与过敏性鼻炎患者所在城市位置和二手烟暴露有关

2021-02-09 AlexYang MedSci原创

过敏性鼻炎(AR)患者的鼻腔上皮屏障会发生损伤。细胞连接分子(包括紧密连接蛋白(TJs)和细胞桥粒)的损伤在AR的发病机制中起着诱因作用。

过敏性鼻炎(AR)患者的鼻腔上皮屏障会发生损伤。细胞连接分子(包括紧密连接蛋白(TJs)和细胞桥粒)的损伤在AR的发病机制中起着诱因作用

最近,有研究人员在AR患者(n=30)和非过敏对照组(n=30)中调查了TJs的转录表达水平,包括occludin(OCLN)、claudin-3和-7(CLDN3和CLDN7)、desmoglein 3(DSG3)和胸腺基质淋巴生成素(TSLP)。研究人员收集了非过敏性对照组和AR患者的鼻上皮细胞来调查mRNA表达水平,并与临床-人口学和环境参数关联起来。研究表明,AR患者与非过敏对照组相比,OCLN(p=0.009)、CLDN3(p=0.032)或CLDN7(p=0.004)转录物的表达显著降低。与非过敏对照组相比,AR患者中DSG3(p=0.750)或TSLP(p=0.991)转录物的表达没有显著差异。另外,研究人员在AR患者中发现城市地点与较低的OCLN表达之间存在显著关联(p=0.010),且暴露于二手烟与较低的CLDN7表达之间存在显著关联(p=0.042)。有趣的是,TJs的表达均与养宠物、更换床单的频率和家务劳动没有显著关系。

AR患者中OCLN、CLDN3、CLDN、DSG3和TSLP表达与人口统计参数的关系

最后,研究人员指出,AR患者鼻腔上皮屏障缺陷可归因于OCLN和CLDN7的表达降低,且与城市地点和二手烟暴露有关,支持最近的空气污染是AR诱因之一的研究结果

原始出处:

Siti Muhamad Nur Husna, Che Othman Siti Sarah, Hern-Tze Tina Tan et al. Reduced occludin and claudin-7 expression is associated with urban locations and exposure to second-hand smoke in allergic rhinitis patients. Sci Rep. Jan 2021

 

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    2021-07-19 hb2008ye
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    2021-02-11 zhaojie88

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