J Periodontal Res: 香烟烟雾对中性粒细胞功能的影响

2018-07-22 MedSci MedSci原创

吸烟是牙周炎的主要危险因素,吸烟会扰乱中性粒细胞活性氧的产生。本实验旨在研究香烟烟雾提取物(CSE)及其成分/代谢物尼古丁,可替宁和硫氰酸盐(SCN-)对中性粒细胞功能的影响。

吸烟是牙周炎的主要危险因素,吸烟会扰乱中性粒细胞活性氧的产生。本实验旨在研究香烟烟雾提取物(CSE)及其成分/代谢物尼古丁,可替宁和硫氰酸盐(SCN-)对中性粒细胞功能的影响。

使用实时视频显微镜评估在用CSE预处理的嗜中性粒细胞中的趋化性。使用荧光评估在用CSE,尼古丁,可替宁,SCN-预处理后CSE,尼古丁,可替宁,SCN-或佛波醇12-肉豆蔻酸-13-乙酸酯和次氯酸处理引起的中性粒细胞胞外陷阱(NET)的释放。通过实时聚合酶链反应测定CSE和SCN-治疗对中性粒细胞呼吸爆发和炎症相关基因表达(NFκBIE,DNAJB1,CXCL8,NCF1,NCF2,CYBB)的影响。

结果:CSE和SCN预处理均抑制佛波醇12-肉豆蔻酸-13-乙酸酯刺激的NET释放。另外,SCN-抑制次氯酸刺激的NET形成,而单独的SCN刺激NET释放。总体而言,用CSE预处理的嗜中性粒细胞相对于未处理的嗜中性粒细胞速度,速率和方向性降低。尽管CSE和SCN促进DNAJB1表达,但仅在SCN-处理时检测到氧化还原相关基因表达增加。

这些结果表明CSE可通过独立于SCN-和尼古丁的机制改变离体中性粒细胞活化,并且SCN-可能与吸烟者的先天性免疫应答相关。

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    2018-08-27 feather89
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    2018-07-22 131****1460

    学习了受益匪浅

    0

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    2018-07-22 1e0f8808m18(暂无匿称)

    学习了,谢谢分享。

    0

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    2018-07-22 Jackie Li

    学习

    0

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据美国“侨报网”5 月 22 日报道,一项发表在《国家癌症研究所杂志》(the Journal of the National Cancer Institute)上的研究表明,所谓的“轻型”香烟不仅有害健康,还可能导致患肺腺癌 (肺癌的一种) 的风险增加。

J Natl Cancer I:研究称过滤嘴香烟危害更大,薄荷香烟更危险

美国一项研究发现,香烟的过滤嘴或可增加肺腺癌发生风险。根据研究结果,研究者建议美国疾控部门是否应考虑禁止香烟过滤嘴。研究者还称,薄荷香烟还允许更深入地吸入香烟烟雾,因为薄荷脑是一种麻醉剂。烟草商在上世纪60年代开始使用过滤嘴,同时吸入燃烧的烟草和空气。当时,这被认为是使香烟更安全。之前就有发现,由于烟草公司在过去50年间采取了一系列隐秘的手段,吸烟变得更加危险、更易上瘾。美国“无烟草青少年运动”组