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Eur Arch Otorhinol:黏附分子和炎症细胞因子的表达对PM2.5的量为浓度依赖的

2017-06-18 AlexYang MedSci原创

过敏性鼻炎(AR)代表了一种临床健康问题,大约影响了全世界5亿人口。最近,有研究人员探索了空气细颗粒物质(PM2.5)对患有过敏性鼻炎小鼠鼻粘膜的影响。研究包括了75只健康的雄性SD小鼠,并随机分为普通、模型、低浓度、中等浓度和高浓度组(每组15只小鼠)。AR小鼠模型利用致敏混合物建立并且利用不同浓度的PM2.5进行刺激。研究人员对打喷嚏和挠鼻事件进行了观察,并利用自动化的血清分析仪定量了白细胞数

过敏性鼻炎(AR)代表了一种临床健康问题,大约影响了全世界5亿人口。最近,有研究人员探索了空气细颗粒物质(PM2.5)对患有过敏性鼻炎小鼠鼻粘膜的影响。

研究包括了75只健康的雄性SD小鼠,并随机分为普通、模型、低浓度、中等浓度和高浓度组(每组15只小鼠)。AR小鼠模型利用致敏混合物建立并且利用不同浓度的PM2.5进行刺激。研究人员对打喷嚏和挠鼻事件进行了观察,并利用自动化的血清分析仪定量了白细胞数(WBCs),还利用ELISA技术、HE染色和qRT-PCR检测了血清lgE、ICAM-1和VCAM-1的表达、嗜酸性粒细胞(EOS)浸润和IFN-γ、IL-4、IL-5、IL-33和TSLP 的表达。研究发现,在模型组,低浓度组、中等浓度组和高浓度组中,与正常组比较,WBCs数量更多,lgE水平、 ICAM-1、VCAM-1、EOS、IFN-γ、IL-4、IL-5、IL-33和TSLP水平提高。并且,在中等浓度组和高浓度组与模型组和低浓度组比较中发现了相同的趋势。另外,正常小鼠和AR小鼠的比较表明了AR小鼠具有显著更高的细胞因子表达水平,即IFN-γ、IL-4、IL-5、TSLP和IL-33。最后,研究人员指出,PM2.5刺激的AR小鼠导致了黏附分子和炎症细胞因子表达水平的增加,并以浓度依赖的方式。对PM2.5和其对AR的影响的分析在对疾病的预防和控制继续推进上非常重要。

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    2017-06-19 清风拂面

    学习了,谢谢分享

    0

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    2017-06-19 184****9840

    学习了谢谢分享。

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    2017-06-18 changjiu

    看看,谢谢分享

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