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深静脉血栓形成的新机制

2017-01-25 MedSci MedSci原创

深静脉血栓(DVT)及其主要并发症,肺栓塞是一项全球性的健康问题。但是,有关DVT的机制仍然没有完全了解。血小板在DVT中起着重要的作用,但是有关特异性血小板受体的影响仍不清楚。已知血小板C型凝集素样受体2(CLEC-2)可以在炎症条件下维持血液脉管系统的生理状态。DVT是一种血管壁中的无菌炎症发展的血栓炎症性病症。那么,CLEC-2可能在DVT中起作用。根据这一设想,近期,一项发表在Blood杂

静脉血栓(DVT)及其主要并发症,肺栓塞是一项全球性的健康问题。但是,有关DVT的机制仍然没有完全了解。血小板在DVT中起着重要的作用,但是有关特异性血小板受体的影响仍不清楚。


已知血小板C型凝集素样受体2(CLEC-2)可以在炎症条件下维持血液脉管系统的生理状态。DVT是一种血管壁中的无菌炎症发展的血栓炎症性病症。那么,CLEC-2可能在DVT中起作用。

根据这一设想,近期,一项发表在Blood杂志上的研究使用下腔静脉(IVC)狭窄的鼠DVT模型,证明了CLEC-2缺陷或血小板特异性缺陷的CLEC-2小鼠可以保护其免受DVT。

在完全停滞小鼠模型中没有观察到表型。野生型血小板输注到血小板特异性CLEC-2敲除小鼠中重新形成了血栓。CLEC-2缺乏以及抑制平滑肌蛋白(CLEC-2的配体)与6小时狭窄后IVC壁处的血小板聚集减少有关。

平足蛋白(Podoplanin)在IVC壁中表达,其位于内皮的近腔侧附近。与没有血栓的小鼠相比,狭窄后48小时,IVC中的平足蛋白水平在具有血栓的小鼠中增加到更高的水平。用抗平足蛋白中和抗体治疗动物导致较小血栓的发展。

此项研究提出了一种新型的DVT机制,其中CLEC-2和上调的静脉壁中的平足蛋白表达触发血栓形成。

原始出处:
Payne H, Ponomaryov T, Watson SP, Brill A. Mice with a deficiency in CLEC-2 are protected against deep vein thrombosis. Blood. 2017 Jan 19. pii: blood-2016-09-742999.

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    2017-03-17 xue8602
  2. [GetPortalCommentsPageByObjectIdResponse(id=1955265, encodeId=0b48195526554, content=<a href='/topic/show?id=0aeb991e44c' target=_blank style='color:#2F92EE;'>#静脉血#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=67, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=99174, encryptionId=0aeb991e44c, topicName=静脉血)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=d139492, createdName=xue8602, createdTime=Fri Mar 17 21:35:00 CST 2017, time=2017-03-17, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1697413, encodeId=4816169e413e7, content=<a href='/topic/show?id=f2399910109' target=_blank style='color:#2F92EE;'>#静脉#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=63, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=99101, encryptionId=f2399910109, topicName=静脉)], attachment=null, authenticateStatus=null, createdAvatar=null, createdBy=0bc129907796, createdName=fusion, createdTime=Sun May 14 04:35:00 CST 2017, time=2017-05-14, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=175472, encodeId=fae31e5472d9, content=好文,值得点赞,值得拥有,值得收藏!, beContent=null, objectType=article, channel=null, level=null, likeNumber=128, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=https://wx.qlogo.cn/mmopen/mONcle9pic3zMoyicyo6ia9f4IuLQAwZoxD6Hx4ibd5CMcOCYhStY6oDibbKK6O2X8iaicldO5ib8j1iapOIobIKCGiczU2A/0, createdBy=56251941490, createdName=虈亣靌, createdTime=Sat Feb 11 04:30:10 CST 2017, time=2017-02-11, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=174740, encodeId=b2001e4740ec, content=新进展,值得学习, beContent=null, objectType=article, channel=null, level=null, likeNumber=102, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=https://wx.qlogo.cn/mmopen/mONcle9pic3zMoyicyo6ia9f4IuLQAwZoxD6Hx4ibd5CMcOCYhStY6oDibbKK6O2X8iaicldO5ib8j1iapOIobIKCGiczU2A/0, createdBy=56251941490, createdName=虈亣靌, createdTime=Tue Feb 07 13:20:20 CST 2017, time=2017-02-07, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=173454, encodeId=cc7b1e3454ac, content=学习新东西,充实自己!, beContent=null, objectType=article, channel=null, level=null, likeNumber=112, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=http://cacheapi.medsci.cn/resource/upload/20160824/IMG57BD028FBDBD52088.jpg, createdBy=79ea1934689, createdName=D.Jh, createdTime=Tue Jan 31 15:27:35 CST 2017, time=2017-01-31, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1483248, encodeId=ab261483248b7, content=<a href='/topic/show?id=c82e991e71b' target=_blank style='color:#2F92EE;'>#静脉血栓形成#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=76, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=99177, encryptionId=c82e991e71b, topicName=静脉血栓形成)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=1d387907505, createdName=ms5187542471278033, createdTime=Fri Jan 27 04:35:00 CST 2017, time=2017-01-27, status=1, ipAttribution=)]
    2017-05-14 fusion
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    2017-02-11 虈亣靌

    好文,值得点赞,值得拥有,值得收藏!

    0

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    2017-02-07 虈亣靌

    新进展,值得学习

    0

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    2017-01-31 D.Jh

    学习新东西,充实自己!

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