Int Forum Allergy Rhinol:过敏性鼻炎中TSLP和IL-33/ST2的协同作用以及组织缺氧作用研究

2020-01-23 AlexYang MedSci原创

世界卫生组织(WHO)已经注明了过敏性疾病是21世纪的一个主要的健康问题。过敏性鼻炎(AR)是I型过敏性疾病,并通过鼻粘膜和免疫系统异常来进行鉴定。AR可以由各种炎症细胞来介导,并且具有细胞因子分泌改变的特征。胸腺基质淋巴生成素(TSLP)和白介素-33/刺激表达基因2 (IL-33/ST2)信号通路在许多炎症细胞响应和过敏性反应中具有重要的作用。在许多疾病中均报道了上述2个途径的互作关系。组织缺

世界卫生组织(WHO)已经注明了过敏性疾病是21世纪的一个主要的健康问题。过敏性鼻炎(AR)是I型过敏性疾病,并通过鼻粘膜和免疫系统异常来进行鉴定。AR可以由各种炎症细胞来介导,并且具有细胞因子分泌改变的特征。胸腺基质淋巴生成素(TSLP)和白介素-33/刺激表达基因2 (IL-33/ST2)信号通路在许多炎症细胞响应和过敏性反应中具有重要的作用。在许多疾病中均报道了上述2个途径的互作关系。组织缺氧是AR的一种常见的病理表现。最近,有研究人员探索了AR中TSLP和IL-33/ST2的关系、表达和生物学功能,同时确定了组织缺氧对这些细胞因子的作用。

研究发现,与来源于对照小鼠的鼻粘膜上皮细胞相比,TSLP、IL-33和ST2表达在来源于AR小鼠的鼻粘膜上皮细胞中显著更高。组织缺氧能够进一步促进它们的表达。另外,TSLP和IL-33/ST2能够促进细胞增殖、抑制细胞凋亡和增强细胞迁移。另外,TSLP表达的下调能够有效的减少IL-33/ST2轴的表达;通过使用IL-33拮抗剂,同样能够减少TSLP表达,其协同作用要比组织缺氧更加明显。

最后,研究人员指出,他们的数据表明了TSLP和IL-33/ST2信号途径在AR病理机制和病理发展中能够互作。TSLP的抑制是AR治疗的一个关键因子。抑制组织缺氧诱导的病理过程代表了一种新的治疗途径,即可以通过下调TSLP表达来抑制IL-33/ST2的表达来实现。

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    2020-01-25 膀胱癌
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    2020-01-25 宋威

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最近,有研究人员评估了呼出气中一氧化氮浓度(FeNO)和最大中段呼气流速(MMEF)在患有或者不患有过敏性鼻炎慢性咳嗽患者中区分咳嗽变异性哮喘(CVA)的诊断价值情况。研究总共包括了328名慢性咳嗽患者,且经历了呼吸量测试和FeNO测试。研究人员根据CVA诊断标准将患者分成了两个小组,CVA组(n=125)和NCVA(n=203)组。研究发现,FeNO和MMEF从慢性咳嗽中区分CVA的最优FeNO

Allergy Asthma Clin Immunol:患有或不患有过敏性哮喘的常年性过敏性鼻炎对睡眠、工作和活动水平的影响

过敏性呼吸疾病,比如过敏性鼻炎(AR)和过敏性哮喘(AA)是常见的情况,能够对睡眠和白天的活动产生影响。然而,上述影响的意义仍旧不清楚,尤其是在常年过敏性患者中。最近,有研究人员调查了常年过敏对睡眠、日常活动和效率的影响情况。研究总共包括了511名常年AR患者(47.4%的患者同时患有季节性过敏),且都完成了调查问卷。大多数受试者(77.5%)具有医生诊断的AR;46.4%的患者被同时诊断为AR和

Biol Pharm Bull:过敏性鼻炎中T细胞介导的鼻高反应性

过敏性鼻炎患者承受着各种各样的症状,比如打喷嚏、流鼻涕和鼻塞。随着疾病严重度和慢性进展,鼻高反应性(NHR)能够在这些患者产生和发展。最近,有研究人员在开发一个小鼠过敏性鼻炎模型中,发现了免疫小鼠在进行重复的鼻抗原挑战时能够发展为NHR。通过使用遗传修饰小鼠和一个原始开发的T细胞转移小鼠模型,研究人员确认了NHR中分化为几种辅助细胞后CD4+T细胞的关键作用。从另一方面来讲,免疫球蛋白E/肥大细胞