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慢性Pod-Mod电子烟气溶暴露在高胆固醇血症小鼠中诱导大动脉功能障碍:氧化应激和炎症的作用
Yasmeen M Farra1, Simone Sabnis1, Jacqueline Matz1
1Department of Bioengineering, Northeastern University, Boston, MA (Y.M.F., S.S., J.M., H.I.B.W., V.A.W., O.T., H.K., J.M.O., C.B.).
Arteriosclerosis, thrombosis, and vascular biology
|July 24, 2025
概括
电子烟 (电子烟) 的蒸发会导致大动脉硬,并通过增加炎症和氧化应激来损害血管功能. 这项研究揭示了电子烟如何导致心血管风险.
科学领域:
- 心血管科学 心血管科学
- 毒理学 毒理学 毒理学
- 肺部医学 肺部医学
背景情况:
- 电子烟 (e-cigarettes) 在青少年和成年人中很受欢迎,经常选择传统的戒烟辅助工具.
- 尽管感知危害较低,但电子烟气溶吸入会引起急性心血管反应,可能导致长期损伤.
研究的目的:
- 研究电子烟气溶暴露对大动脉硬性和血管活性的长期影响.
- 探索蒸汽诱导的大动脉损伤背后的细胞和分子机制.
主要方法:
- 雌性高胆固醇贫血小鼠每天暴露在电子烟喷雾剂或过空气中,持续24周.
- 评估了大动脉硬度,血管活性和损伤的分子标志物.
主要成果:
- 慢性吸入电子烟气溶导致全身炎症和T淋巴细胞在大动脉组织中的积累.
- 观察到氧化 (NO) 生物可用性降低和内皮依赖血管扩张受损.
- 大动脉组织表现出加厚,硬化和原沉积,导致心缩和脉压力增加.
结论:
- 电子烟的吸烟会促进大动脉组织中的氧化应激,炎症和纤维化.
- 这些变化显著损害了大动脉功能,增加了心血管不良事件的风险.
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