孕激素放大过敏性炎症和呼吸道病理,与较高的肺部ILC2反应相关
Shubhanshi Trivedi1,2, Cassandra E Deering-Rice3, Samuel E Aamodt4
1Division of Infectious Disease, Department of Internal Medicine, University of Utah, Salt Lake City, Utah, United States.
概括
孕激素通过增加小鼠和人类的呼吸道炎症和过敏反应,使过敏喘恶化. 这种激素增强了2组先天性淋巴细胞 (ILC2) 的反应,导致女性喘恶化.
科学领域:
- 免疫学 免疫学 免疫学
- 呼吸系统医学 呼吸系统医学
- 内分泌学 在内分泌学.
背景情况:
- 喘恶化在女性中很常见,特别是在月经前期.
- 孕激素等性激素对喘严重性的影响尚未完全理解.
研究的目的:
- 调查孕激素在恶化过敏气道炎症中的作用.
- 在小鼠模型和人类细胞中确定孕激素对第2组先天性淋巴细胞 (ILC2) 的作用.
主要方法:
- 利用卵泡诱导过敏喘的小鼠模型,向卵巢切除的小鼠注射孕激素.
- 评估肺炎,呼吸道过敏反应,以及ILC2的数量和功能.
- 研究了孕激素对人类外周血液单核细胞 (PBMCs),特别是ILC2的影响.
主要成果:
- 孕激素显著增加了小鼠的呼吸道炎症,反应过敏,以及ILC2和中性粒细胞透.
- 受孕激素治疗的小鼠ILC2对IL-33的反应增强,产生更多的IL-13和化学激素.
- 人类ILC2表达了孕激素受体,在联合孕激素和IL-33刺激时表现出高水平的IL-13和化学激素产生.
结论:
- 孕激素会加剧过敏呼吸道炎症和过敏反应.
- 鼠类和人类的ILC2对孕激素有反应,并导致过敏肺炎.
- 孕激素诱导的ILC2过敏反应可能解释了女性在特定月经周期阶段喘恶化增加.
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