J Allergy Clin Immunol:髓样树突状细胞和浆细胞样树突状细胞对过敏性鼻炎患者ILC2s的影响研究

2019-12-24 AlexYang MedSci原创

Ⅱ型固有淋巴细胞(ILC2s)在过敏性疾病中具有关键的作用。髓样树突状细胞(mDCs)和浆细胞样树突状细胞(pDCs)在过敏性免疫响应中也有明显的作用。然而,DCs对ILC2s在过敏性疾病中的影响,尤其是过敏性鼻炎患者中,仍旧不清楚。最近,有研究人员评估了在AR中mDCs和pDCs在调控ILC2功能中的作用。研究发现,ILC2s、mDCs和pDCs在AR患者的鼻粘膜中的确存在。异体和自体mDCs均

Ⅱ型固有淋巴细胞(ILC2s)在过敏性疾病中具有关键的作用。髓样树突状细胞(mDCs)和浆细胞样树突状细胞(pDCs)在过敏性免疫响应中也有明显的作用。然而,DCs对ILC2s在过敏性疾病中的影响,尤其是过敏性鼻炎患者中,仍旧不清楚。

最近,有研究人员评估了在AR中mDCs和pDCs在调控ILC2功能中的作用。研究发现,ILC2s、mDCs和pDCs在AR患者的鼻粘膜中的确存在。异体和自体mDCs均能够激活来源于AR患者的ILC2s,并能够产生Th2细胞因子,增强GATA-3和STAT信号途径,其中,IL-33促进产生的mDCs能够通过结合在ST2上对ILC2s发挥主要作用。研究人员进一步鉴定了在抗原挑战下AR患者中高水平的IL-33+mDCs和ILC2s。激活的pDCs能够抑制AR患者的ILC2s产生细胞因子。

最后,研究人员指出,在AR患者中,mDCs通过IL-33/ST2促进ILC2的功能,pDCs的激活能够通过IL-6抑制ILC2发的功能。他们的发现对DCs和ILC2s在过敏性疾病的互作提供了新的理解。

原始出处:

Peng YQ, Qin ZL, Fang SB et al. Effects of myeloid and plasmacytoid dendritic cells on ILC2s in patients with allergic rhinitis. J Allergy Clin Immunol. Dec 5 2019.

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    2019-12-26 膀胱癌
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ORL J Otorhinolaryngol Relat Spec:IL-35能够抑制抑制过敏性鼻炎儿童的Th17响应

之前的研究证明了Th17(辅助性T17细胞)细胞亚群,一种特异的促炎性CD4+T细胞谱系,参与了过敏性鼻炎(AR)的病理生理过程。IL-35主要由自然调节性T细胞(Treg)(nTreg)分泌,且依赖于Foxp3的表达,能够有效的减弱过敏原诱导的特异性气道炎症。然而,IL-35在过敏性鼻炎中的调控仍旧未知。最近,有研究人员招募了20名AR儿童和20名健康对照。研究人员检测了血清中IL-35的表达,

Eur Respir J:早期经历空气污染和儿童哮喘、过敏性鼻炎和湿疹研究

越来越多的证据表明了空气污染可能导致儿童哮喘和其他过敏性疾病。最近,有研究人员在一个多伦多儿童健康评估调查问卷(T-CHEQ)跟踪调查研究中,评估了早期经历空气污染与哮喘、过敏性鼻炎和湿疹在出生到青少年之间的发病率情况。研究包括了1286名T-CHEQ参与者,他们从出生到2016年3月31日一直进行跟踪调查或者跟踪失败,平均跟踪调查的时间为17年。研究人员根据参与者出生时的邮政编码测量了1999年

Clin Respir J:过敏性鼻炎和睡眠呼吸暂停综合征儿童共有的和特异的风险因子和临床生物标记研究

鼻炎和睡眠呼吸暂停综合征(OSAS)是不同的疾病,但是具有相似的风险因子。最近,有研究人员比较了鼻炎和OSAS儿童中的风险因子和临床生物标记情况。研究是一个代表性的研究,包括了3917名儿童(4-13岁)。研究发现,OSAS和鼻炎在研究群体中的患病率分别为4.0%和43.5%。身体质量指数(P<0.001)和早熟(P=0.016)与OSAS显著相关,而与鼻炎没有相关性。父母更高的教育水平和收