Multisystem inflammatory syndrome in children – allergist and immunologist point of view

A. Sybilski
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Abstract

Multisystem inflammatory syndrome in children associated with COVID-19 (MIS-C) is a complication following SARS-CoV-2 infection. It may appear a few weeks after coronavirus infection, even if it was asymptomatic. Symptoms may appear gradually in the following days of illness and may be mild to severe in its course. The most common symptoms of MIS-C include fever > 3 days, gastrointestinal symptoms, skin changes. Shock can often occur. The key pathomechanism of the syndrome is hyperinflammation and an altered cytokine profile. Activation of T lymphocytes in MIS-C is mediated by the superantigen, which is the spike protein of the virus. The clinical picture and the immune pathophysiological profile show similarities between MIS-C and Kawasaki diseases (KD). The relationship of MIS-C with allergic diseases has not been investigated, but by analogy it can be assumed that it will be similar to KD. Allergic rhinitis, asthma, and atopic dermatitis have been demonstrated to increase following KD. Children who have previously suffered from combined allergic diseases (atopic dermatitis, allergic rhinitis, and urticaria) are at an increased risk of developing KD. There is an increased risk of KD in children who had sought medical care for allergic diseases more than twice a year compared to children with fewer medical visits. Data on the relationship of KD with atopy indicate the need to undertake studies analyzing MIS-C in this context.
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儿童多系统炎症综合征——过敏症专家和免疫学家的观点
与COVID-19相关的儿童多系统炎症综合征(MIS-C)是SARS-CoV-2感染后的并发症。它可能在冠状病毒感染后几周出现,即使没有症状。症状可在发病后几天逐渐出现,病程可由轻至重。MIS-C最常见的症状包括发烧3天,胃肠道症状,皮肤变化。休克是经常发生的。该综合征的关键病理机制是过度炎症和细胞因子谱的改变。MIS-C中T淋巴细胞的激活是由超抗原介导的,超抗原是病毒的刺突蛋白。临床表现和免疫病理生理特征显示misc和川崎病(KD)的相似之处。MIS-C与变应性疾病的关系尚未研究,但通过类比可以推测其与KD相似。变应性鼻炎、哮喘和特应性皮炎已被证实在KD后增加。以前患有合并过敏性疾病(特应性皮炎、过敏性鼻炎和荨麻疹)的儿童患KD的风险增加。与就诊次数较少的儿童相比,每年因过敏性疾病就诊两次以上的儿童患KD的风险增加。KD与特应性关系的数据表明有必要在此背景下进行分析MIS-C的研究。
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来源期刊
自引率
50.00%
发文量
18
期刊介绍: Alergologia Polska - Polish Journal of Allergology is aimed mainly at allergologists, but also medical doctors working in related fields, such as otolaryngology, pulmonology, and dermatology. The main goal of the journal is to ensure rapid publication of important research papers and interesting case studies from the following areas: allergology, diagnostics, therapy of allergic diseases, in particular in the area of immunotherapy, rhinitis, asthma. The Editorial Board accepts for publication original papers, case studies and letters to the Editor. We also publish review articles (both commissioned and those agreed upon with the Editor-in-Chief), articles dealing with standards of medical practice, as well as special issues. The journal is published quarterly. We guarantee short review times (up to two weeks) and immediate publication on-line upon Editor acceptance.
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