Frontiers in Immunology:吸烟可能导致炎症性肠病

2017-10-31 MedSci MedSci原创

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


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,即炎症性肠道疾病。然而香烟烟雾对胃肠系统的影响机制尚不清楚。一种可能是,吸烟引起的肺部炎症可能会对肠道产生连锁反应。

"呼吸道和肠道系统有很多共同之处,"韩国庆熙大学的Hyunsu Bae说。有趣的是,在传统的韩国医学中,长期以来一直强调肺与大肠之间的联系。克罗恩病更有可能发生在呼吸道疾病患者身上,这表明肺部炎症与肠道炎症有关。为了研究这种可能性,Bae和他的同事们持续数周每周六天,让老鼠每次暴露在二十根香烟的烟雾中。研究人员随后检查了小鼠肺部和结肠的炎症情况。
毫不意外地是,与暴露在清洁空气中的小鼠相比,暴露在香烟烟雾中的小鼠肺部有明显的炎症。有趣的是,他们也患有一种类似克罗恩病的结肠炎。研究人员发现,结肠中的粘液和炎症水平升高,烟雾暴露的老鼠的粪便中的血液水平也增加了。他们还发现了CD4 + T细胞的增加,这是一种白细胞,它释放了一种叫做干扰素的促炎性蛋白。

研究小组接下来研究了这些白细胞和炎症蛋白是否引起烟雾诱发的结肠炎。他们对那些没有CD4 + T细胞的老鼠和不能产生干扰素的老鼠重复了这个实验。在这两种情况下,老鼠暴露在香烟烟雾中并没有产生结肠炎。

研究小组现在确信,CD4 + T细胞与香烟烟雾引起的结肠炎有关,但不确定这些白细胞是否可能被香烟烟雾激活,然后到达结肠引起结肠炎。

为了测试这一点,研究人员将老鼠暴露在香烟烟雾中,然后从肺部附近的组织中分离出CD4 + T细胞。然后他们将这些细胞注射到从未接触过烟雾的小鼠体内。引人注目的是,注入的细胞迁移到结肠,而非烟雾暴露的小鼠不久就出现结肠炎。

"我们的研究结果表明,吸烟会激活肺部特定的白细胞,随后可能会转移到结肠,引发肠道炎症,"参与这项研究的另一位研究人员Jinju Kim解释说。"吸烟者,尤其是那些患有肠道疾病的人,应该减少吸烟。" 这些发现还可以帮助科学家开发新的治疗克罗恩病的方法。

原文出处:Gihyun Lee1, et.al, Cigarette Smoking Triggers Colitis by IFN-γ+ CD4+ T Cells. Frontiers in Immunology, 2017.

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    2018-06-14 anminleiryan
  2. [GetPortalCommentsPageByObjectIdResponse(id=1878235, encodeId=0a9918e82353a, content=<a href='/topic/show?id=c157696175' target=_blank style='color:#2F92EE;'>#ERS#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=35, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=6961, encryptionId=c157696175, topicName=ERS)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=e93e105, createdName=anminleiryan, createdTime=Thu Jun 14 14:24:00 CST 2018, time=2018-06-14, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1547093, encodeId=8bac154e09355, content=<a href='/topic/show?id=4ef26e01766' target=_blank style='color:#2F92EE;'>#炎症性#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=34, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=67017, encryptionId=4ef26e01766, topicName=炎症性)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=4c37265, createdName=hb2008ye, createdTime=Thu Nov 02 13:24:00 CST 2017, time=2017-11-02, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=257695, encodeId=d7ee25e695ca, content=好知识.值得拥有, beContent=null, objectType=article, channel=null, level=null, likeNumber=55, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=59321624668, createdName=zb1235672, createdTime=Wed Nov 01 07:16:05 CST 2017, time=2017-11-01, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=257681, encodeId=db4125e681dc, content=谢谢了.学习, beContent=null, objectType=article, channel=null, level=null, likeNumber=57, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=null, createdBy=30331616752, createdName=txqjm, createdTime=Wed Nov 01 06:45:51 CST 2017, time=2017-11-01, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=257611, encodeId=16a825e61129, content=不错的文章值得一读., beContent=null, objectType=article, channel=null, level=null, likeNumber=46, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=eff51996281, createdName=1e1b8538m79(暂无匿称), createdTime=Tue Oct 31 22:48:29 CST 2017, time=2017-10-31, status=1, ipAttribution=)]
  3. [GetPortalCommentsPageByObjectIdResponse(id=1878235, encodeId=0a9918e82353a, content=<a href='/topic/show?id=c157696175' target=_blank style='color:#2F92EE;'>#ERS#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=35, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=6961, encryptionId=c157696175, topicName=ERS)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=e93e105, createdName=anminleiryan, createdTime=Thu Jun 14 14:24:00 CST 2018, time=2018-06-14, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1547093, encodeId=8bac154e09355, content=<a href='/topic/show?id=4ef26e01766' target=_blank style='color:#2F92EE;'>#炎症性#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=34, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=67017, encryptionId=4ef26e01766, topicName=炎症性)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=4c37265, createdName=hb2008ye, createdTime=Thu Nov 02 13:24:00 CST 2017, time=2017-11-02, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=257695, encodeId=d7ee25e695ca, content=好知识.值得拥有, beContent=null, objectType=article, channel=null, level=null, likeNumber=55, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=59321624668, createdName=zb1235672, createdTime=Wed Nov 01 07:16:05 CST 2017, time=2017-11-01, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=257681, encodeId=db4125e681dc, content=谢谢了.学习, beContent=null, objectType=article, channel=null, level=null, likeNumber=57, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=null, createdBy=30331616752, createdName=txqjm, createdTime=Wed Nov 01 06:45:51 CST 2017, time=2017-11-01, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=257611, encodeId=16a825e61129, content=不错的文章值得一读., beContent=null, objectType=article, channel=null, level=null, likeNumber=46, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=eff51996281, createdName=1e1b8538m79(暂无匿称), createdTime=Tue Oct 31 22:48:29 CST 2017, time=2017-10-31, status=1, ipAttribution=)]
    2017-11-01 zb1235672

    好知识.值得拥有

    0

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    2017-11-01 txqjm

    谢谢了.学习

    0

  5. [GetPortalCommentsPageByObjectIdResponse(id=1878235, encodeId=0a9918e82353a, content=<a href='/topic/show?id=c157696175' target=_blank style='color:#2F92EE;'>#ERS#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=35, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=6961, encryptionId=c157696175, topicName=ERS)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=e93e105, createdName=anminleiryan, createdTime=Thu Jun 14 14:24:00 CST 2018, time=2018-06-14, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1547093, encodeId=8bac154e09355, content=<a href='/topic/show?id=4ef26e01766' target=_blank style='color:#2F92EE;'>#炎症性#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=34, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=67017, encryptionId=4ef26e01766, topicName=炎症性)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=4c37265, createdName=hb2008ye, createdTime=Thu Nov 02 13:24:00 CST 2017, time=2017-11-02, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=257695, encodeId=d7ee25e695ca, content=好知识.值得拥有, beContent=null, objectType=article, channel=null, level=null, likeNumber=55, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=59321624668, createdName=zb1235672, createdTime=Wed Nov 01 07:16:05 CST 2017, time=2017-11-01, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=257681, encodeId=db4125e681dc, content=谢谢了.学习, beContent=null, objectType=article, channel=null, level=null, likeNumber=57, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=null, createdBy=30331616752, createdName=txqjm, createdTime=Wed Nov 01 06:45:51 CST 2017, time=2017-11-01, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=257611, encodeId=16a825e61129, content=不错的文章值得一读., beContent=null, objectType=article, channel=null, level=null, likeNumber=46, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=eff51996281, createdName=1e1b8538m79(暂无匿称), createdTime=Tue Oct 31 22:48:29 CST 2017, time=2017-10-31, status=1, ipAttribution=)]
    2017-10-31 1e1b8538m79(暂无匿称)

    不错的文章值得一读.

    0

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