吸烟者和COPD患者呼吸道上皮损伤的记忆
François M Carlier1,2,3, Bruno Detry4, Marylène Lecocq4
1Pole of Pneumology, ENT, and Dermatology, Institute of Experimental and Clinical Research, Université Catholique de Louvain, Brussels, Belgium carlierfrancois@gmail.com.
慢性阻塞性肺病 (COPD) 呼吸道上皮缺陷在吸烟者和COPD患者中长期存在. 这些细胞变化反映了对香烟烟雾损伤的持久记忆,影响了肺部健康.
科学领域:
- 肺部医学 肺部医学
- 细胞生物学 细胞生物学
- 呼吸系统研究 呼吸系统研究
背景情况:
- 慢性阻塞性肺病 (COPD) 涉及不可逆转的支气管上皮缺陷.
- 这些体外表皮质缺陷的长期持续性尚不清楚.
- 了解上皮细胞记忆对于COPD的发病过程至关重要.
研究的目的:
- 在长期的呼吸道上皮培养中调查COPD相关的上皮缺陷的持久性.
- 为了将ex vivo发现与本地表皮和手术样本进行比较.
- 探索炎症和细胞因子在维持上皮质异常中的作用.
主要方法:
- 从非吸烟者,吸烟者和COPD患者的长期呼吸道上皮细胞培养物.
- 评估屏障功能,极性,细胞结合,以及上皮细胞转化为介质细胞的转变 (EMT).
- 细胞因子分析和治疗以评估炎症的作用.
主要成果:
- 与COPD相关的屏障功能障碍,极性丧失和血统异常持续长达10周.
- 杯状细胞增生与最近暴露于香烟烟雾相关.
- 增加IL-8/CXCL-8释放和异常EMT随着时间的推移而减少,但ex vivo发现与手术样本相匹配.
结论:
- 吸烟者和COPD患者的气道上皮质保留了香烟烟雾引起的伤害的"记忆".
- 这些持续的异常有助于COPD的长期结构和功能缺陷.
- 这些发现强调了吸烟对呼吸道上皮细胞的持久影响.
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