Circulation:木炭水烟可引起年轻成人急性内皮功能障碍

2019-02-23 国际循环编辑部 国际循环

水烟被作为一种无害的香烟替代品常向年轻人推销。吸烟严重损害内皮功能,但吸入水果味水烟烟草的结果尚不清楚。传统上常用木炭加热水烟袋中的水烟烟草,水烟烟雾传递烟草毒物和尼古丁伴木炭燃烧产物:不仅富含碳的纳米粒子-氧化剂可破坏一氧化氮并损害内皮功能,而且还会产生大量血管扩张分子一氧化碳(CO)。

水烟被作为一种无害的香烟替代品常向年轻人推销。吸烟严重损害内皮功能,但吸入水果味水烟烟草的结果尚不清楚。传统上常用木炭加热水烟袋中的水烟烟草,水烟烟雾传递烟草毒物和尼古丁伴木炭燃烧产物:不仅富含碳的纳米粒子-氧化剂可破坏一氧化氮并损害内皮功能,而且还会产生大量血管扩张分子一氧化碳(CO)。

为检测水烟对内皮功能的急性影响,研究者在内皮功能水烟吸烟者(n=30,年龄26±1岁,平均值±SE)中,测量木炭加热水烟吸烟前后血浆尼古丁,呼出的CO和肱动脉血流介导的扩张(FMD)情况。为消除木炭燃烧的影响,相同调味的水烟烟草产品被电加热(n=20)时,进行同样的测量。作为阳性对照,研究者还研究了年龄相同的吸烟者(n=15)。为分离CO增加对FMD的影响,水烟吸烟者(n=8)吸入0.1%CO气体混合物接近用木炭加热水烟吸烟达到的CO上升。

结果显示:受试者尼古丁水平增加,与其他所有类型的吸烟相似。与电加热水烟或吸烟相比,在炭火加热水烟后,呼出的CO增加9~10倍。吸入木炭加热的水烟后FMD没有下降,反而增加+ 43%±7%(P<0.001)。相比之下,吸入电加热水烟后FMD下降-27%±4%(P<0.001),与吸烟后的下降相似。呼吸CO气体后FMD显著增加138%±71%(P<0.001),比木炭加热水烟后相同受试者增加2.8倍(P<0.001),尽管呼出的CO相应增加(24±1 vs. 28±3 PPM,水烟vs. CO)。

吸入水烟烟草与香烟烟草类似,严重损害内皮功能。传统的木炭加热水烟,急性内皮功能障碍被高水平的一氧化碳所掩盖,这是一种由木炭燃烧产生的强效血管扩张分子。关于大动脉内皮功能,吸入水烟并非无害。

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    2019-02-25 sunmin0222
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    2019-02-24 天地飞扬

    学习一下,谢谢分享!

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