Baidu
map

J Immunol:哮喘疾病发生机制新突破

2016-01-08 佚名 生物谷

哮喘是一类以肺炎以及呼吸道超敏反应为表征的慢性呼吸道疾病。然而,临床上获得的哮喘病人样本对揭示该疾病的发生机制十分有限。对于超敏反应而言,Th2与Th17细胞具有重要的作用:分别由Th2与Th17分泌的IL13与IL17A是参与呼吸道超敏反应的效应分子。其中IL-13促进机体对类固醇的超敏反应,从而导致肺部大量嗜酸性细胞的浸润。另一方面,IL-17能够促进中性粒细胞的浸润。为了进一步揭示在哮喘疾病

哮喘是一类以肺炎以及呼吸道超敏反应为表征的慢性呼吸道疾病。然而,临床上获得的哮喘病人样本对揭示该疾病的发生机制十分有限。对于超敏反应而言,Th2与Th17细胞具有重要的作用:分别由Th2与Th17分泌的IL13与IL17A是参与呼吸道超敏反应的效应分子。其中IL-13促进机体对类固醇的超敏反应,从而导致肺部大量嗜酸性细胞的浸润。另一方面,IL-17能够促进中性粒细胞的浸润。为了进一步揭示在哮喘疾病发生过程中Th2与Th17的作用机制,来自匹斯堡大学儿科医学中心的John F. Alcorn课题组建立了一种新的小鼠模型。相关结果发表在最近一期的journal of immunology杂志上。

首先,作者利用T细胞移植的方式向野生型小鼠中导入同源的OVA特异性Th2与Th17细胞,之后利用OVA进行刺激使这部分移植进入的细胞得到激活。从而得到了类固醇耐受性的呼吸道过敏疾病小鼠模型。之后,作者通过elisa手段证明这一方法能够引起肺部大量Th2/Th17细胞的聚集以及IL-13/IL-17A的积累,标志着肺部炎症的发生。
 
之后,作者利用中和抗体的方法阻断了IL-13与IL-17A的活性。结果显示,在介入中和抗体之后,肺部的炎症反应程度得到了显著的减轻。此外,作者证明在IL-13与IL17A活性受到抑制的情况下,小鼠的肺部粘液上皮化生(哮喘的一类症状)也得到了改善。
 
之后,作者通过REAL-TIME PCR的方法证明在IL-13或IL-17被抑制的情况下Th2/Th17细胞内部STAT3的表达水平显著上升,这一结果说明IL-13与IL-17A可能是通过Stat3发挥促炎症的作用的。与此相反,STAT6的表达量在两类细胞被阻断的情况下受到了抑制。最终,作者比较了野生型小鼠与STAT6缺失突变体小鼠在呼吸道炎症疾病模型中的差异。结果显示,相比于野生型,突变体小鼠II型细胞因子的表达量得到了明显的降低。这一结果说明STAT6信号通路对于介导两类细胞因子引起的呼吸道炎症反应具有关键的作用。

原始出处:
 

版权声明:
本网站所有内容来源注明为“梅斯医学”或“MedSci原创”的文字、图片和音视频资料,版权均属于梅斯医学所有。非经授权,任何媒体、网站或个人不得转载,授权转载时须注明来源为“梅斯医学”。其它来源的文章系转载文章,或“梅斯号”自媒体发布的文章,仅系出于传递更多信息之目的,本站仅负责审核内容合规,其内容不代表本站立场,本站不负责内容的准确性和版权。如果存在侵权、或不希望被转载的媒体或个人可与我们联系,我们将立即进行删除处理。
在此留言
评论区 (5)
#插入话题
  1. [GetPortalCommentsPageByObjectIdResponse(id=1724892, encodeId=ca6e1e2489213, content=<a href='/topic/show?id=9ee758586bb' target=_blank style='color:#2F92EE;'>#新突破#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=86, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=58586, encryptionId=9ee758586bb, topicName=新突破)], attachment=null, authenticateStatus=null, createdAvatar=null, createdBy=792a33728807, createdName=zxxiang, createdTime=Mon Jul 18 12:11:00 CST 2016, time=2016-07-18, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=62837, encodeId=0d3c6283e51, content=开阔思路,谢谢, beContent=null, objectType=article, channel=null, level=null, likeNumber=124, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=a24d1675548, createdName=dandanniu, createdTime=Tue Feb 02 16:32:00 CST 2016, time=2016-02-02, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=56030, encodeId=633b56030d3, content=科研的重要性, beContent=null, objectType=article, channel=null, level=null, likeNumber=153, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=e4e21675717, createdName=卡莲, createdTime=Mon Jan 11 22:27:00 CST 2016, time=2016-01-11, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=56029, encodeId=e9315602965, content=点赞, beContent=null, objectType=article, channel=null, level=null, likeNumber=111, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=e4e21675717, createdName=卡莲, createdTime=Mon Jan 11 22:26:00 CST 2016, time=2016-01-11, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1511302, encodeId=a168151130265, content=<a href='/topic/show?id=0a493e89802' target=_blank style='color:#2F92EE;'>#发生机制#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=67, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=37898, encryptionId=0a493e89802, topicName=发生机制)], attachment=null, authenticateStatus=null, createdAvatar=null, createdBy=188310331118, createdName=ms6390871039024434, createdTime=Sun Jan 10 00:11:00 CST 2016, time=2016-01-10, status=1, ipAttribution=)]
    2016-07-18 zxxiang
  2. [GetPortalCommentsPageByObjectIdResponse(id=1724892, encodeId=ca6e1e2489213, content=<a href='/topic/show?id=9ee758586bb' target=_blank style='color:#2F92EE;'>#新突破#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=86, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=58586, encryptionId=9ee758586bb, topicName=新突破)], attachment=null, authenticateStatus=null, createdAvatar=null, createdBy=792a33728807, createdName=zxxiang, createdTime=Mon Jul 18 12:11:00 CST 2016, time=2016-07-18, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=62837, encodeId=0d3c6283e51, content=开阔思路,谢谢, beContent=null, objectType=article, channel=null, level=null, likeNumber=124, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=a24d1675548, createdName=dandanniu, createdTime=Tue Feb 02 16:32:00 CST 2016, time=2016-02-02, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=56030, encodeId=633b56030d3, content=科研的重要性, beContent=null, objectType=article, channel=null, level=null, likeNumber=153, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=e4e21675717, createdName=卡莲, createdTime=Mon Jan 11 22:27:00 CST 2016, time=2016-01-11, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=56029, encodeId=e9315602965, content=点赞, beContent=null, objectType=article, channel=null, level=null, likeNumber=111, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=e4e21675717, createdName=卡莲, createdTime=Mon Jan 11 22:26:00 CST 2016, time=2016-01-11, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1511302, encodeId=a168151130265, content=<a href='/topic/show?id=0a493e89802' target=_blank style='color:#2F92EE;'>#发生机制#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=67, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=37898, encryptionId=0a493e89802, topicName=发生机制)], attachment=null, authenticateStatus=null, createdAvatar=null, createdBy=188310331118, createdName=ms6390871039024434, createdTime=Sun Jan 10 00:11:00 CST 2016, time=2016-01-10, status=1, ipAttribution=)]
    2016-02-02 dandanniu

    开阔思路,谢谢

    0

  3. [GetPortalCommentsPageByObjectIdResponse(id=1724892, encodeId=ca6e1e2489213, content=<a href='/topic/show?id=9ee758586bb' target=_blank style='color:#2F92EE;'>#新突破#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=86, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=58586, encryptionId=9ee758586bb, topicName=新突破)], attachment=null, authenticateStatus=null, createdAvatar=null, createdBy=792a33728807, createdName=zxxiang, createdTime=Mon Jul 18 12:11:00 CST 2016, time=2016-07-18, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=62837, encodeId=0d3c6283e51, content=开阔思路,谢谢, beContent=null, objectType=article, channel=null, level=null, likeNumber=124, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=a24d1675548, createdName=dandanniu, createdTime=Tue Feb 02 16:32:00 CST 2016, time=2016-02-02, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=56030, encodeId=633b56030d3, content=科研的重要性, beContent=null, objectType=article, channel=null, level=null, likeNumber=153, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=e4e21675717, createdName=卡莲, createdTime=Mon Jan 11 22:27:00 CST 2016, time=2016-01-11, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=56029, encodeId=e9315602965, content=点赞, beContent=null, objectType=article, channel=null, level=null, likeNumber=111, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=e4e21675717, createdName=卡莲, createdTime=Mon Jan 11 22:26:00 CST 2016, time=2016-01-11, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1511302, encodeId=a168151130265, content=<a href='/topic/show?id=0a493e89802' target=_blank style='color:#2F92EE;'>#发生机制#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=67, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=37898, encryptionId=0a493e89802, topicName=发生机制)], attachment=null, authenticateStatus=null, createdAvatar=null, createdBy=188310331118, createdName=ms6390871039024434, createdTime=Sun Jan 10 00:11:00 CST 2016, time=2016-01-10, status=1, ipAttribution=)]
    2016-01-11 卡莲

    科研的重要性

    0

  4. [GetPortalCommentsPageByObjectIdResponse(id=1724892, encodeId=ca6e1e2489213, content=<a href='/topic/show?id=9ee758586bb' target=_blank style='color:#2F92EE;'>#新突破#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=86, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=58586, encryptionId=9ee758586bb, topicName=新突破)], attachment=null, authenticateStatus=null, createdAvatar=null, createdBy=792a33728807, createdName=zxxiang, createdTime=Mon Jul 18 12:11:00 CST 2016, time=2016-07-18, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=62837, encodeId=0d3c6283e51, content=开阔思路,谢谢, beContent=null, objectType=article, channel=null, level=null, likeNumber=124, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=a24d1675548, createdName=dandanniu, createdTime=Tue Feb 02 16:32:00 CST 2016, time=2016-02-02, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=56030, encodeId=633b56030d3, content=科研的重要性, beContent=null, objectType=article, channel=null, level=null, likeNumber=153, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=e4e21675717, createdName=卡莲, createdTime=Mon Jan 11 22:27:00 CST 2016, time=2016-01-11, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=56029, encodeId=e9315602965, content=点赞, beContent=null, objectType=article, channel=null, level=null, likeNumber=111, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=e4e21675717, createdName=卡莲, createdTime=Mon Jan 11 22:26:00 CST 2016, time=2016-01-11, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1511302, encodeId=a168151130265, content=<a href='/topic/show?id=0a493e89802' target=_blank style='color:#2F92EE;'>#发生机制#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=67, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=37898, encryptionId=0a493e89802, topicName=发生机制)], attachment=null, authenticateStatus=null, createdAvatar=null, createdBy=188310331118, createdName=ms6390871039024434, createdTime=Sun Jan 10 00:11:00 CST 2016, time=2016-01-10, status=1, ipAttribution=)]
    2016-01-11 卡莲

    点赞

    0

  5. [GetPortalCommentsPageByObjectIdResponse(id=1724892, encodeId=ca6e1e2489213, content=<a href='/topic/show?id=9ee758586bb' target=_blank style='color:#2F92EE;'>#新突破#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=86, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=58586, encryptionId=9ee758586bb, topicName=新突破)], attachment=null, authenticateStatus=null, createdAvatar=null, createdBy=792a33728807, createdName=zxxiang, createdTime=Mon Jul 18 12:11:00 CST 2016, time=2016-07-18, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=62837, encodeId=0d3c6283e51, content=开阔思路,谢谢, beContent=null, objectType=article, channel=null, level=null, likeNumber=124, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=a24d1675548, createdName=dandanniu, createdTime=Tue Feb 02 16:32:00 CST 2016, time=2016-02-02, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=56030, encodeId=633b56030d3, content=科研的重要性, beContent=null, objectType=article, channel=null, level=null, likeNumber=153, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=e4e21675717, createdName=卡莲, createdTime=Mon Jan 11 22:27:00 CST 2016, time=2016-01-11, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=56029, encodeId=e9315602965, content=点赞, beContent=null, objectType=article, channel=null, level=null, likeNumber=111, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=e4e21675717, createdName=卡莲, createdTime=Mon Jan 11 22:26:00 CST 2016, time=2016-01-11, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1511302, encodeId=a168151130265, content=<a href='/topic/show?id=0a493e89802' target=_blank style='color:#2F92EE;'>#发生机制#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=67, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=37898, encryptionId=0a493e89802, topicName=发生机制)], attachment=null, authenticateStatus=null, createdAvatar=null, createdBy=188310331118, createdName=ms6390871039024434, createdTime=Sun Jan 10 00:11:00 CST 2016, time=2016-01-10, status=1, ipAttribution=)]

相关资讯

J Allergy Clin Immunol:哮喘或能增加带状疱疹发病的风险水平!

http://www.medicalnewstoday.com/articles/304551.php

Respirology:哮喘不一定是过敏性疾病

已有研究表明,中性粒细胞炎症会导致成年人非嗜酸细胞性哮喘(NEA),但是目前关于儿童或青少年NEA的研究鲜有,因此研究者对青少年哮喘患者进行了一项研究,探究NEA的临床和炎症特点。该研究纳入了77名哮喘青少年患者以及68名没有哮喘的青少年(12-17岁),评估参与者气道炎症、痰内毒素、气道高反应、特异反应性和肺功能。根据喘息和哮喘史识别哮喘患者。研究数据显示,NEA患者(痰液嗜酸粒细胞<2.

JAMA Pediatr:儿童早期接触动物可降低其哮喘的发生风险

JAMA Pediatr:儿童早期接触动物可降低其哮喘的发生风险早期接触动物和儿童哮喘发生之间的关系并未明确,既往关于此方面的研究得出了相互矛盾的结果。本研究旨在确定早期暴露于狗与农场动物中是否会增加儿童日后哮喘发生的风险。采用队列研究方法,共纳入了2001年1月1日到2010年12月31日之间出生的1011051名瑞典儿童,以评估早期接触狗和农场动物与哮喘发生风险之间的关系。查阅记录狗和农场登记

Lancet Respir Med:哮喘研究的四大领域—呼吸病学2015年度总结专题

胎儿发育期饮食调节是预防哮喘和其他复杂疾病的关键,应用系统生物学的方法分析多元数据对于充分了解哮喘进展的生物化学过程是完全有必要的。

BMJ:对鸡蛋过敏的年轻人使用流感减毒活疫苗是安全的

此开放性的、IV期干预性研究共纳入了779名对鸡蛋过敏的年轻人(2-18岁)。该队列中270名研究对象存在鸡蛋过敏史,其中157名出现过呼吸和/或心血管症状。445名曾被诊断为哮喘或喘息。接种疫苗后至少观察30分钟后才可允许研究对象离开,72小时后进行电话随访。

JAMA:择期剖宫产儿童的不良健康结局

全球范围内分娩方式的选择上“择期剖宫产”无疑占了较大比例,一些地区择期和急诊剖宫产发生率接近50%!先前有观察性研究表明,剖宫产生产的后代在儿童时期更容易生病,但是这些观察性研究并没有对关键的混杂因素进行校正。此外并没有关于择期剖宫产分娩的后代,新生儿期以后的死亡风险报道。因此研究者进行了一项研究,拟探究择期剖宫产与后代健康问题或儿童期死亡风险的关系。该研究在1993-2007年间共纳入了321 

Baidu
map
Baidu
map
Baidu
map