根据他们的亚托皮性皮肤炎状态,确定严重喘儿童的主要免疫差异
Guillaume Lezmi1, Clément Poirault1, Marta Grauso2
1Université de Paris, Institut Necker Enfants Malades, Equipe Immunorégulation et Immunopathologie, Inserm UMR1151, CNRS UMR8253, F-75015, Paris, France; AP-HP, Hôpital Necker-Enfants Malades, Service de Pneumologie et Allergologie Pédiatriques, F-75015, Paris, France.
Cellular immunology
|March 1, 2024
概括
与没有AD的儿童相比,患有严重喘 (SA) 和皮炎 (AD) 的儿童在呼吸道和血液样本中显示出不同的免疫特征. 这些差异表明,在儿童严重喘中,独特的炎症途径存在.
科学领域:
- 儿科免疫学 儿科免疫学
- 呼吸系统医学 呼吸系统医学
- 过敏和免疫学 过敏和免疫学
背景情况:
- 严重的喘 (SA) 影响了2%至5%的喘儿童,高达34%的人也患有亚托皮炎 (AD).
- 这两种疾病都有共同的遗传和免疫联系,但SA儿童的独特免疫特征,有或没有AD,仍然不清楚.
- 了解这些差异对于识别儿科SA的潜在内型至关重要.
研究的目的:
- 为了比较支气管支气管洗 (BAL) 和患有严重喘 (cwSA) 的儿童的血液中的免疫特征,有和没有亚托皮性皮肤炎 (AD).
- 为了研究特定的免疫细胞群和细胞因子/化学因子之间的差异,这两组儿科患者.
- 在cwSA中探索血和BAL细胞因子之间的相关性.有和没有AD.
主要方法:
- 招募了17名患有严重喘 (cwSA) 的儿童:有7名患有阿兹海默症,10名没有阿兹海默症.
- 支气管支气管洗 (BAL) 和血液样本被收集用于分析.
- 在BAL和血液中量化了73种细胞因子/化学因子和免疫T细胞种群.
主要成果:
- 在BAL和血液中的总体免疫特征在有或没有AD的cwSA之间是相似的.
- 观察到的特定差异:BAL.中的Tc2,Th17和IL-17产生MAIT细胞的频率较低.
- 较高的CD8 / CD4比率和IL-22在BAL中,以及在血中增加的CCL19在cWSA和AD中被发现.
- 血和BAL细胞因子之间的正相关性仅在AD的cwSA中发现.
结论:
- 儿科重症喘患者与没有亚托皮性皮肤炎之间的BAL和血液存在显著的免疫差异.
- 这些发现表明,不同的内型可能有助于这些儿科群体的炎症反应.
- 对这些免疫变异的进一步研究可能会导致针对儿科严重喘的更有针对性的治疗策略.
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