在COPD中,支气管和肺动脉中的细胞外矩阵和内皮激活标记物
Raquel Annoni1,2, Jôse Mára de Brito1,3, Salvatore Battaglia4
1Laboratório de Patologia Ambiental e Experimental, Departamento de Patologia, Faculdade de Medicina da Universidade de São Paulo, São Paulo, SP, Brazil.
The clinical respiratory journal
|November 29, 2025
概括
细胞外基质重塑和内皮激活发生在吸烟者和COPD患者的动脉中. 纤维素是轻度至中度COPD动脉变化的关键,影响支气管循环和肺高血压的发展.
科学领域:
- 肺和血管医学 肺和血管医学
- 慢性阻塞性肺病 (COPD) 的研究.
- 心血管病理学心血管病理学
背景情况:
- 血管变化是慢性阻塞性肺病 (COPD) 病理生理学的核心.
- 肺高血压影响39%的COPD患者,特别是那些患有严重疾病的人.
- 吸烟会导致内皮功能障碍,甚至在早期的COPD阶段也会导致血管变化.
研究的目的:
- 研究肺 (PMA) 和支气管肌动脉 (BMA) 中细胞外矩阵 (ECM) 改造和内皮激活.
- 为了比较非吸烟者 (NS),非阻塞吸烟者 (NOS) 和轻度/中度COPD患者的血管变化.
主要方法:
- 分析44名接受切除的患者的肺组织样本.
- 在BMA和PMA中量化形态参数,ECM组件 (原体,纤维菌素,弹性纤维,素-C,versican) 和内皮标记物 (VCAM-1,ICAM-1,内皮蛋白-1).
- 利用免疫组织化学和形态分析,评估群体差异和临床相关性.
主要成果:
- 慢性肺炎患者在PMA中表现出增加的内厚度和纤维素,在BMA中表现出更大的偶然区域.
- 非阻塞吸烟者 (NOS) 在BMA中显示出更高的VCAM-1,在PMA中增加了弹性纤维.
- 在COPD中,弹性纤维和III型原与吸烟史有负相关性;纤维内素与年龄有正相关性. 在BMA中的VCAM-1与肺功能 (FEV1,FEV1/FVC) 有负相关性.
结论:
- 在吸烟者和COPD患者的支气管动脉中首次证明ECM重塑和内皮激活.
- 纤维肌菌素被确定为轻度至中度慢性肺炎动脉重塑中的关键ECM成分.
- 研究结果提供了对支气管循环调节和COPD相关的肺高血压发展的见解.
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