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Front Immun:吸烟的又一大危害被揭发!

2017-11-01 枫丹白露 来宝网

一项新的研究显示了香烟烟雾对肠道炎症的直接影响。韩国的研究人员报告说,将小鼠暴露于香烟烟雾会导致结肠炎,结肠炎,类似于克罗恩病,并鉴定出一种特异性的白细胞和炎性蛋白质。该研究今天发表在开放获取期刊“免疫学前沿”杂志上,可以帮助科学家开发诸如克罗恩病等炎症性肠病的新疗法,并提高吸烟者对结肠炎风险的认识。

吸烟可能导致炎症性肠病】一项新的研究显示了香烟烟雾对肠道炎症的直接影响。韩国的研究人员报告说,将小鼠暴露于香烟烟雾会导致结肠炎,结肠炎,类似于克罗恩病,并鉴定出一种特异性的白细胞和炎性蛋白质。该研究今天发表在开放获取期刊免疫学前沿”杂志上,可以帮助科学家开发诸如克罗恩病炎症性肠病的新疗法,并提高吸烟者对结肠炎风险的认识。

以前的研究表明,吸烟显着增加了克罗恩病,炎性肠病的风险。然而,香烟烟雾影响胃肠系统的机制尚不清楚。一种可能性是吸烟引起的肺部炎症可能在肠道中具有连锁作用。

韩国京畿大学Hy说:“气道和肠道系统有很多共同之处。 “有趣的是,在韩国传统医学中,长期以来一直强调肺和大肠之间的联系,克罗恩病在气道疾病患者中更可能发生,这表明肺部炎症与肠道炎症有关。

为了调查这种可能性,Bae和他的同事每天六天,每天从二十支烟中吸取小鼠吸烟数周。研究人员随后检查了小鼠肺和肠道中是否存在炎症。

毫不奇怪,与暴露于清洁空气的小鼠相比,暴露于香烟烟雾的小鼠在肺中显示出显着的炎症。有趣的是,他们也患有类似克罗恩病的一种结肠炎。研究人员发现结肠粘液和炎症水平增加,暴露烟雾的小鼠粪便中的血液水平升高。他们还发现增加水平的CD4 + T细胞,一种白细胞,其释放称为干扰素-γ的促炎蛋白质。

接下来的研究小组研究了这些白细胞和炎性蛋白是否源于烟雾诱导的结肠炎。他们用非常少的CD4 + T细胞和不能产生干扰素-γ的小鼠重复实验。在这两种情况下,当暴露于香烟烟雾时,小鼠没有发生结肠炎。

该小组现在有信心认为CD4 + T细胞对香烟烟雾诱导的结肠炎负责,但不确定这些白细胞是否可能被肺中的香烟烟雾激活,然后前往结肠引起结肠炎。

为了测试这一点,研究人员将小鼠暴露于香烟烟雾中,然后从肺组织附近分离CD4 + T细胞。然后,他们将细胞注射到从未暴露于烟雾中的小鼠。引人注目的是,注射的细胞迁移到结肠,非烟雾暴露的小鼠在不久之后就发生了结肠炎。

研究人员Jinju Kim解释说:“我们的研究结果表明,吸烟会激活肺中特定的白细胞,这可能会后来移动到结肠,引发肠道炎症。 “吸烟者,特别是那些也患有肠病的人,应该减少吸烟。”这些发现也可以帮助科学家开发克罗恩病的新疗法。”

原始出处:

Gihyun Lee, et al. Cigarette Smoking Triggers Colitis by IFN-γ+ CD4+ T Cells. Frontiers in Immunology, 2017. DOI: 10.3389/fimmu.2017.01344.

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    2017-11-06 thlabcde

    好资料学习了!

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  2. [GetPortalCommentsPageByObjectIdResponse(id=259234, encodeId=e0d62592346d, content=好资料学习了!, beContent=null, objectType=article, channel=null, level=null, likeNumber=80, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=92191944782, createdName=thlabcde, createdTime=Mon Nov 06 20:08:11 CST 2017, time=2017-11-06, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=258534, encodeId=aa5125853462, content=肺和大腸相表里在中医里很早就有了.韩国传统医学可能是中医传过去的, beContent=null, objectType=article, channel=null, level=null, likeNumber=103, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=http://thirdwx.qlogo.cn/mmopen/vi_32/y1ZJaAFo7AFqm7Hn2QNVTjOpBV9mRicUEjyBqRMnLADF1oQXJGeIVCpiaY1hJVMd1C40EhFCw4LL8sCKTx8Yuvsw/132, createdBy=af0b1960284, createdName=孙文杰, createdTime=Sat Nov 04 07:21:20 CST 2017, time=2017-11-04, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=258257, encodeId=86c125825e5e, content=吸烟有害健康, beContent=null, objectType=article, channel=null, level=null, likeNumber=95, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=https://cdnapi.center.medsci.cn/medsci/head/2017/09/07/a9772c74ffd6edc03a7f9af07b4747f6.jpg, createdBy=b3722138742, createdName=sunfeifeiyang, createdTime=Fri Nov 03 07:01:17 CST 2017, time=2017-11-03, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=258223, encodeId=fcfa2582230a, content=学习学习学习, beContent=null, objectType=article, channel=null, level=null, likeNumber=91, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=https://wx.qlogo.cn/mmopen/jW482SpianMayicTRbRZ5RzR8ylhYfiaoAUx2BsaYHVia1IKhG3Cg8CT84rBrn6iaVRkyAibJxBcLEXabOQ5p19vWgDe34ib5ErxNgx/0, createdBy=8a701629084, createdName=jihuaijun1112, createdTime=Fri Nov 03 05:24:47 CST 2017, time=2017-11-03, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=257782, encodeId=0d3125e78235, content=沟沟壑壑还好还好还好还好哈哼哼唧唧, beContent=null, objectType=article, channel=null, level=null, likeNumber=92, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=b0171930782, createdName=为你把脉, createdTime=Wed Nov 01 11:44:21 CST 2017, time=2017-11-01, status=1, ipAttribution=)]
    2017-11-04 孙文杰

    肺和大腸相表里在中医里很早就有了.韩国传统医学可能是中医传过去的

    0

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    2017-11-03 sunfeifeiyang

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    2017-11-03 jihuaijun1112

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    2017-11-01 为你把脉

    沟沟壑壑还好还好还好还好哈哼哼唧唧

    0

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Frontiers in Immunology:吸烟可能导致炎症性肠病

一项新的研究首次表明了香烟烟雾对肠道炎症的直接影响。韩国的研究人员报告说,将老鼠暴露在香烟烟雾中会导致结肠炎,这是一种类似于克罗恩病的结肠炎症,并确定了一种特定的白细胞和炎症蛋白。这项研究今天发表在开放获取期刊《Frontiers in Immunology》杂志上,可以帮助科学家开发新的治疗炎症性肠病的方法,如克罗恩病,并提高吸烟者对结肠炎风险的认识。之前的研究表明,吸烟会显着增加克罗恩病的风险

J Intern Med:酒精摄入、吸烟与主动脉瓣狭窄发病率

主动脉瓣狭窄(AVS)是最常见的瓣膜性心脏病,在65岁以上的人群中发病率为2~7%。 AVS是一种进行性疾病,其终末期与心血管原因的高发病率和死亡率相关。未经治疗的严重AVS患者,2年死亡率近50%。2017年10月,发表在《J Intern Med》的一项由瑞典科学家进行的研究,考察了饮酒、吸烟与AVS风险的相关性。

ANN RHEUM DIS:护士健康研究队列中吸烟与系统性红斑狼疮的风险

这个新发现表明吸烟涉及dsDNA + SLE的发病机制。

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