Mol Immunol:在过敏性鼻炎患者中,组织缺氧能够打乱芳香烃受体信号和Th17响应

2018-08-04 AlexYang MedSci原创

组织缺氧是过敏性鼻炎(AR)的关键特性,然而,在AR中组织缺氧产生的影响还没有完全的认识。最近,有研究人员通过调查组织缺氧影响的信号通路对Th17分化的作用,探究了组织缺氧对Th17响应的影响。研究包括了23名AR患者和15名健康的对照。在常氧和缺氧条件下,研究人员测量了HIF-1α, AhR, CYP1A1和CYP1B1的表达情况以及Th17细胞在CD4+T细胞中的表现情况。研究发现,与健康对照

组织缺氧是过敏性鼻炎(AR)的关键特性,然而,在AR中组织缺氧产生的影响还没有完全的认识。最近,有研究人员通过调查组织缺氧影响的信号通路对Th17分化的作用,探究了组织缺氧对Th17响应的影响。

研究包括了23名AR患者和15名健康的对照。在常氧和缺氧条件下,研究人员测量了HIF-1α, AhR, CYP1A1和CYP1B1的表达情况以及Th17细胞在CD4+T细胞中的表现情况。研究发现,与健康对照相比,来源于AR患者的CD4+T细胞中的HIF-1α和AhR的表达量更高。在组织缺氧环境条件下,AR患者和健康对照的HIF-1α在CD4+T细胞中的表达均提高。同时,在组织缺氧条件下,无毒AhR配体对Th17响应的抑制作用和它对IL-10产生的积极响应在AR患者和健康对照细胞中均受到了抑制。这些影响均是由于HIF-1α能够与AhR竞争性的结合ARNT产生,上述竞争性结合能够限制AhR通路的活性。

最后,研究人员指出,他们的研究表明了组织缺氧能够通过HIF-1α活性来减少AhR活性,从而促进Th17响应。因此,组织缺氧可能密切参与了AR的致病过程。

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    2018-08-15 Jackie Li

    学习

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    2018-08-06 zhaojie88

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过敏性鼻炎主要由IgE介导的介质(主要是组胺)释放,并有多种免疫活性细胞和细胞因子等参与的鼻黏膜非感染性炎性疾病。其发生的必要条件有特异性抗原即引起机体免疫反应的物质、特应性个体、特异性抗原与特应型个体二者相遇。过敏性鼻炎是一个全球性健康问题,可导致许多疾病和劳动力丧失。梅斯医学小编整理了近期过敏性鼻炎的研究进展,与大家一起分享学习!【1】EBioMedicine:在过敏性鼻炎且伴随肥胖的患者