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Luca Modestino1, Manuela Tumminelli1, Ilaria Mormile1,2
1Department of Internal Medicine and Clinical Immunology, University Hospital of Naples Federico II, Naples, Italy.
Frontiers in immunology
|September 23, 2024
概括
牛皮关节炎 (PsA) 患者的中性粒细胞 (PMN) 显示功能和激活减少,但血清中炎症介质增加,表明"耗尽"的表型有助于疾病.
科学领域:
- 免疫学 免疫学 免疫学
- 类风湿病学 类风湿病学
- 细胞生物学 细胞生物学
背景情况:
- 中性粒细胞 (多态核白细胞,PMN) 是关键的炎症细胞,与牛皮关节炎 (PsA) 有关.
- 在PsA病变发生过程中,PMN及其介质的确切功能仍然不完全理解.
- 这项研究研究了PsA患者中PMN和相关介质的生物功能.
研究的目的:
- 在PsA患者中描述周围血液PMN的激活状态和功能能力.
- 在PSA患者中量化中性粒细胞衍生的炎症媒介的血清水平.
- 探索PMN功能和PSA血清中介水平之间的关系.
主要方法:
- 从31名PsA患者和22名健康对照人群 (HCs) 中分离的PMN用于体外刺激.
- 评估了PMN激活,反应性氧物种 (ROS) 生产,细胞化,颗粒酶释放和中性粒细胞外细胞陷 (NETs) 的形成.
- 使用ELISA测量了MMP-9,MPO,TNF,IL-23,IL-17和CitH3的血清水平.
主要成果:
- 与HC相比,PSA PMN在TNF刺激时表现出减少的激活,ROS产生和细胞形成.
- PsA PMNs显示颗粒酶 (MPO) 和NET释放的减少.
- 肺炎患者的血清中MMP-9,MPO,TNF,IL-23,IL-17和CitH3水平升高,在某些媒介之间观察到显著的相关性.
结论:
- 来自PSA患者的PMN表现出一种"耗尽"的表型,其特征是体外功能受损.
- 中性粒细胞衍生媒介的血清水平升高表明,在PsA病理生理学中具有促炎作用.
- 这些发现凸显了PMN在牛皮关节炎的发病过程中的复杂和多方面的参与.
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