和的输送损失改变了PM诱导的表皮功能障碍
Sandra Jaworowska1, Kamila Maliszewska-Olejniczak1, Agnieszka Łukasiak1
1Department of Physics and Biophysics, Institute of Biology, Warsaw University of Life Sciences - SGGW, Warsaw, Poland.
和化物运输障碍使颗粒物对呼吸道细胞的影响恶化. 这凸显了离子通道功能对于维持呼吸系统健康和上皮质完整性的重要性.
科学领域:
- 呼吸系统生物学 呼吸系统生物学
- 离子通道功能 离子通道功能
- 环境健康 环境健康
背景情况:
- 慢性颗粒物 (PM) 暴露会导致呼吸系统问题,如氧化应激和炎症.
- 通过BKCa和CFTR通道运输和化物在PM诱导的肺功能障碍中的作用尚不清楚.
研究的目的:
- 为了研究颗粒物 (PM) 如何影响呼吸道上皮细胞与改变的离子运输.
- 确定BKCa和CFTR通道功能中断对PM诱导的细胞损伤和屏障完整性的影响.
主要方法:
- 评估了PM对ROS,炎症,线粒体功能,平衡和壁垒完整性的影响,在野生型,BKCa受损和CFTR功能障碍的人类支气管上皮细胞中.
- 测量过体电阻 (TEER) 来评估表皮屏障功能.
主要成果:
- 暴露于颗粒物增加了ROS和炎症标志物 (IL-6,TNF-α),特别是在离子运输受损的细胞中.
- 线粒体功能和平衡受到PM的干扰,在BKCa或CFTR有缺陷的细胞中更严重.
- 用TEER测量的上皮屏障完整性被PM显著降低,CFBE细胞表现出最大的敏感性.
结论:
- 损坏的BKCa和CFTR功能加剧了PM诱导的氧化应激,炎症,线粒体功能障碍和气道上皮细胞中的不平衡.
- 适当的和化物运输对于保持呼吸道上皮质完整性,防止颗粒物等环境污染至关重要.
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