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电子烟斗 (水管) 蒸汽减少血管内皮功能:尼古丁的作用
Mary Rezk-Hanna1, Matthew J Rossman2, Katelyn Ludwig2
1School of Nursing, University of California, Los Angeles, Los Angeles, California, United States.
American journal of physiology. Heart and circulatory physiology
|December 22, 2023
概括
使用尼古丁的电子 (电子) 烟斗蒸汽会严重损害内皮功能,并降低氧化 (NO) 的生物可用性. 这些负面的血管影响是由尼古丁引起的,而不是其他电子液成分.
科学领域:
- 心血管研究研究心血管研究
- 血管生物学 血管生物学
- 烟草控制研究研究 烟草控制研究
背景情况:
- 电子 (电子) 烟斗越来越受欢迎,特别是在年轻人中,通常被推销为传统烟草产品的更安全替代品.
- 以前的研究表明,急性电子烟雾烟会对内皮功能产生负面影响,但尼古丁的具体作用和潜在机制需要进一步研究.
- 了解电子烟斗对血管健康的影响对于公共卫生倡议和监管政策至关重要.
研究的目的:
- 研究吸烟电子烟斗 (含尼古丁或不含尼古丁) 对健康年轻人内皮功能的急性影响.
- 阐明电子液体中尼古丁与非尼古丁成分在引起内皮功能障碍中的作用.
- 检查电子烟水蒸汽对影响内皮细胞氧化 (NO) 生产和活性氧物种 (ROS) 生物活性等血因素的影响.
主要方法:
- 一项随机交叉研究,涉及18名健康的年轻人.
- 使用手臂动脉流介导扩张 (FMD) 评估内皮功能.
- 用参与者血培养的人类静脉内皮细胞 (HUVEC) 的体外评估,以测量NO生产和ROS生物活性.
- 在蒸汽会议之前和之后测量血尼古丁度.
主要成果:
- 与尼古丁一起使用电子烟斗显著减少了内皮依赖性口炎,表明内皮功能受损.
- 电子烟斗与尼古丁一起吸烟急剧增加了心率和平均动脉压.
- 暴露于尼古丁电子烟斗后参与者的血中的HUVEC显示了NO生物可用性降低和ROS生物活性增加,没有观察到无尼古丁电子烟斗或假冒vaping的影响.
- 在使用含有尼古丁的电子烟水之后,血尼古丁水平显著增加.
结论:
- 急性电子烟水蒸汽,特别是由于其尼古丁含量,诱导内皮功能障碍.
- 尼古丁通过降低NO的生物可用性和增加ROS的产生来损害内皮功能.
- 这些发现表明,尼古丁,而不是其他电子液体成分,是导致使用电子烟斗的急性血管不良影响的原因.
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