JAHA:维生素C可预防电子水烟引起的血管内皮功能障碍

2021-02-21 MedSci原创 MedSci原创

电子水烟对血管功能有不良影响,可能是由氧化应激所介导,它可能会加速心血管疾病的发生和进展。

电子水烟在年轻人中越来越受欢迎,年轻人认为带香味的气溶胶在通过水时可以降低毒性。然而,电子水烟是通过制造一种由细颗粒和超细颗粒以及其他氧化剂组成的气溶胶来传递尼古丁,这种气溶胶可能会降低一氧化氮的生物利用度,并损害内皮细胞的功能。

近日,血管疾病领域权威杂志JAHA上发表了一篇研究文章,研究人员评估了电子水烟对内皮功能的急性影响,以及氧化应激的增加在多大程度上导致了电子水烟诱导的血管损伤。26名健康的年轻成年习惯性水烟吸烟者被邀请吸30分钟电子水烟,以评估对通过肱动脉血流介导扩张(FMD)衡量的内皮功能的影响。为了评估氧化应激的介导效应,研究人员在静脉输注抗氧化剂维生素C(n=11)之前和之后测量了受试者血浆总抗氧化能力水平,并评估了电子水烟对FMD的影响。在受试者吸电子水烟前后测量了他们血浆中尼古丁水平和呼出气体中一氧化碳水平。

电子水烟可增加受试者血浆中尼古丁水平(+4.93±0.92 ng/mL, P<0.001;平均值±SE),呼气中一氧化碳没有变化(−0.15±0.17 ppm;P=0.479),平均动脉压升高(11±1 mmHg,P<0.001),FMD急性降低(从5.79±0.58%降至4.39±0.46%;P<0.001)。

输注维生素C可使血浆总抗氧化能力增加5倍,可使基线FMD水平增加(5.98±0.66% vs. 9.46±0.87%,P<0.001),并预防电子水烟导致的急性FMD损伤(9.46±0.87% vs. 8.74±0.84%,P=0.002)。所有指标在对照研究期间中没有变化。

由此可见,电子水烟对血管功能有不良影响,可能是由氧化应激所介导,它可能会加速心血管疾病的发生和进展

原始出处:

Mary Rezk‐Hanna.et al.Ascorbic Acid Prevents Vascular Endothelial Dysfunction Induced by Electronic Hookah (Waterpipe) Vaping.J AM HEART ASSOC.2021.https://www.ahajournals.org/doi/full/10.1161/JAHA.120.019271

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    2021-02-23 zhaohui6731
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    2021-02-23 sunmin0222

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