Nature Commun:Tau加重脑卒中兴奋毒性脑损伤

2017-09-19 MedSci MedSci原创

谷氨酸受体异常兴奋引起的神经元兴奋性中毒可促使脑卒中患者脑损伤。这里,研究人员使用大脑中动脉闭塞与再灌注模型建立实验性脑卒中小鼠模型。发现tau蛋白缺陷(tau−/−)小鼠的大脑不受兴奋性中毒脑损伤和神经功能缺损的影响。机制上研究人员发现,这种保护是由于谷氨酸诱导的位点特异性抑制和Ras抑制性SynGAP1的积累导致的Ras/ERK介导的毒性。因此,降低 tau−/−小鼠中SynGAP1得水平消除

谷氨酸受体异常兴奋引起的神经元兴奋性中毒可促使脑卒中患者脑损伤。这里,研究人员使用大脑中动脉闭塞与再灌注模型建立实验性脑卒中小鼠模型。发现tau蛋白缺陷(tau−/−)小鼠的大脑不受兴奋性中毒脑损伤和神经功能缺损的影响。

机制上研究人员发现,这种保护是由于谷氨酸诱导的位点特异性抑制和Ras抑制性SynGAP1的积累导致的Ras/ERK介导的毒性。因此,降低 tau−/−小鼠中SynGAP1得水平消除了药理学诱导的兴奋性毒性和大脑中动脉闭塞引起的脑损伤的保护作用。相反,SynGAP1的过度表达阻止了野生型神经元中的兴奋性毒素ERK活化。

总之,该研究结果表明,tau通过控制SynGAP1的突触后分隔来介导兴奋毒性Ras / ERK信号传导。

原始出处:

Mian Bi, Amadeus Gladbach,et al., Tau exacerbates excitotoxic brain damage in an animal model of stroke. Nat Commun. 2017; 8: 473.

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=2087126, encodeId=4c4f208e126d1, content=<a href='/topic/show?id=490750196b' target=_blank style='color:#2F92EE;'>#COMMUN#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=38, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=5019, encryptionId=490750196b, topicName=COMMUN)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=7931272, createdName=liuli5079, createdTime=Sun Oct 29 08:07:00 CST 2017, time=2017-10-29, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1882449, encodeId=6623188244900, content=<a href='/topic/show?id=3b2112532d8' target=_blank style='color:#2F92EE;'>#Nat#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=0, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=12532, encryptionId=3b2112532d8, topicName=Nat)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=2e6f107, createdName=liye789132251, createdTime=Wed Jul 25 05:07:00 CST 2018, time=2018-07-25, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1397327, encodeId=0fc8139e3279a, content=<a href='/topic/show?id=8bee565436d' target=_blank style='color:#2F92EE;'>#损伤#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=43, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=56543, encryptionId=8bee565436d, topicName=损伤)], attachment=null, authenticateStatus=null, createdAvatar=https://thirdwx.qlogo.cn/mmopen/vi_32/DYAIOgq83eoNX3lUOlDKGBUEPNwZx0nibmdcFyeibnX4WMhUSCU2REpGRWtSmnT2CCs0dA5waxvJknYDxwtYnIcQ/132, createdBy=294e2500218, createdName=ms3046638856685384, createdTime=Thu Sep 21 07:07:00 CST 2017, time=2017-09-21, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1509259, encodeId=09be15092599a, content=<a href='/topic/show?id=19791e14471' target=_blank style='color:#2F92EE;'>#Tau#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=35, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=17144, encryptionId=19791e14471, topicName=Tau)], attachment=null, authenticateStatus=null, createdAvatar=null, createdBy=55c610090940, createdName=szhvet, createdTime=Thu Sep 21 07:07:00 CST 2017, time=2017-09-21, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=245743, encodeId=e533245e4324, content=学习了受益匪浅, beContent=null, objectType=article, channel=null, level=null, likeNumber=42, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=https://wx.qlogo.cn/mmopen/ajNVdqHZLLDicHg2ldsSNmib46PmdzpO7CQEmPjuULp1v45zPWwMYhrnXgvl3OtmUCZSQfgITWn96X9moL94nUGA/0, createdBy=28072041016, createdName=131****1460, createdTime=Tue Sep 19 18:57:45 CST 2017, time=2017-09-19, status=1, ipAttribution=)]
    2017-10-29 liuli5079
  2. [GetPortalCommentsPageByObjectIdResponse(id=2087126, encodeId=4c4f208e126d1, content=<a href='/topic/show?id=490750196b' target=_blank style='color:#2F92EE;'>#COMMUN#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=38, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=5019, encryptionId=490750196b, topicName=COMMUN)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=7931272, createdName=liuli5079, createdTime=Sun Oct 29 08:07:00 CST 2017, time=2017-10-29, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1882449, encodeId=6623188244900, content=<a href='/topic/show?id=3b2112532d8' target=_blank style='color:#2F92EE;'>#Nat#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=0, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=12532, encryptionId=3b2112532d8, topicName=Nat)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=2e6f107, createdName=liye789132251, createdTime=Wed Jul 25 05:07:00 CST 2018, time=2018-07-25, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1397327, encodeId=0fc8139e3279a, content=<a href='/topic/show?id=8bee565436d' target=_blank style='color:#2F92EE;'>#损伤#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=43, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=56543, encryptionId=8bee565436d, topicName=损伤)], attachment=null, authenticateStatus=null, createdAvatar=https://thirdwx.qlogo.cn/mmopen/vi_32/DYAIOgq83eoNX3lUOlDKGBUEPNwZx0nibmdcFyeibnX4WMhUSCU2REpGRWtSmnT2CCs0dA5waxvJknYDxwtYnIcQ/132, createdBy=294e2500218, createdName=ms3046638856685384, createdTime=Thu Sep 21 07:07:00 CST 2017, time=2017-09-21, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1509259, encodeId=09be15092599a, content=<a href='/topic/show?id=19791e14471' target=_blank style='color:#2F92EE;'>#Tau#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=35, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=17144, encryptionId=19791e14471, topicName=Tau)], attachment=null, authenticateStatus=null, createdAvatar=null, createdBy=55c610090940, createdName=szhvet, createdTime=Thu Sep 21 07:07:00 CST 2017, time=2017-09-21, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=245743, encodeId=e533245e4324, content=学习了受益匪浅, beContent=null, objectType=article, channel=null, level=null, likeNumber=42, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=https://wx.qlogo.cn/mmopen/ajNVdqHZLLDicHg2ldsSNmib46PmdzpO7CQEmPjuULp1v45zPWwMYhrnXgvl3OtmUCZSQfgITWn96X9moL94nUGA/0, createdBy=28072041016, createdName=131****1460, createdTime=Tue Sep 19 18:57:45 CST 2017, time=2017-09-19, status=1, ipAttribution=)]
    2018-07-25 liye789132251
  3. [GetPortalCommentsPageByObjectIdResponse(id=2087126, encodeId=4c4f208e126d1, content=<a href='/topic/show?id=490750196b' target=_blank style='color:#2F92EE;'>#COMMUN#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=38, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=5019, encryptionId=490750196b, topicName=COMMUN)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=7931272, createdName=liuli5079, createdTime=Sun Oct 29 08:07:00 CST 2017, time=2017-10-29, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1882449, encodeId=6623188244900, content=<a href='/topic/show?id=3b2112532d8' target=_blank style='color:#2F92EE;'>#Nat#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=0, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=12532, encryptionId=3b2112532d8, topicName=Nat)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=2e6f107, createdName=liye789132251, createdTime=Wed Jul 25 05:07:00 CST 2018, time=2018-07-25, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1397327, encodeId=0fc8139e3279a, content=<a href='/topic/show?id=8bee565436d' target=_blank style='color:#2F92EE;'>#损伤#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=43, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=56543, encryptionId=8bee565436d, topicName=损伤)], attachment=null, authenticateStatus=null, createdAvatar=https://thirdwx.qlogo.cn/mmopen/vi_32/DYAIOgq83eoNX3lUOlDKGBUEPNwZx0nibmdcFyeibnX4WMhUSCU2REpGRWtSmnT2CCs0dA5waxvJknYDxwtYnIcQ/132, createdBy=294e2500218, createdName=ms3046638856685384, createdTime=Thu Sep 21 07:07:00 CST 2017, time=2017-09-21, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1509259, encodeId=09be15092599a, content=<a href='/topic/show?id=19791e14471' target=_blank style='color:#2F92EE;'>#Tau#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=35, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=17144, encryptionId=19791e14471, topicName=Tau)], attachment=null, authenticateStatus=null, createdAvatar=null, createdBy=55c610090940, createdName=szhvet, createdTime=Thu Sep 21 07:07:00 CST 2017, time=2017-09-21, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=245743, encodeId=e533245e4324, content=学习了受益匪浅, beContent=null, objectType=article, channel=null, level=null, likeNumber=42, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=https://wx.qlogo.cn/mmopen/ajNVdqHZLLDicHg2ldsSNmib46PmdzpO7CQEmPjuULp1v45zPWwMYhrnXgvl3OtmUCZSQfgITWn96X9moL94nUGA/0, createdBy=28072041016, createdName=131****1460, createdTime=Tue Sep 19 18:57:45 CST 2017, time=2017-09-19, status=1, ipAttribution=)]
  4. [GetPortalCommentsPageByObjectIdResponse(id=2087126, encodeId=4c4f208e126d1, content=<a href='/topic/show?id=490750196b' target=_blank style='color:#2F92EE;'>#COMMUN#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=38, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=5019, encryptionId=490750196b, topicName=COMMUN)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=7931272, createdName=liuli5079, createdTime=Sun Oct 29 08:07:00 CST 2017, time=2017-10-29, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1882449, encodeId=6623188244900, content=<a href='/topic/show?id=3b2112532d8' target=_blank style='color:#2F92EE;'>#Nat#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=0, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=12532, encryptionId=3b2112532d8, topicName=Nat)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=2e6f107, createdName=liye789132251, createdTime=Wed Jul 25 05:07:00 CST 2018, time=2018-07-25, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1397327, encodeId=0fc8139e3279a, content=<a href='/topic/show?id=8bee565436d' target=_blank style='color:#2F92EE;'>#损伤#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=43, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=56543, encryptionId=8bee565436d, topicName=损伤)], attachment=null, authenticateStatus=null, createdAvatar=https://thirdwx.qlogo.cn/mmopen/vi_32/DYAIOgq83eoNX3lUOlDKGBUEPNwZx0nibmdcFyeibnX4WMhUSCU2REpGRWtSmnT2CCs0dA5waxvJknYDxwtYnIcQ/132, createdBy=294e2500218, createdName=ms3046638856685384, createdTime=Thu Sep 21 07:07:00 CST 2017, time=2017-09-21, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1509259, encodeId=09be15092599a, content=<a href='/topic/show?id=19791e14471' target=_blank style='color:#2F92EE;'>#Tau#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=35, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=17144, encryptionId=19791e14471, topicName=Tau)], attachment=null, authenticateStatus=null, createdAvatar=null, createdBy=55c610090940, createdName=szhvet, createdTime=Thu Sep 21 07:07:00 CST 2017, time=2017-09-21, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=245743, encodeId=e533245e4324, content=学习了受益匪浅, beContent=null, objectType=article, channel=null, level=null, likeNumber=42, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=https://wx.qlogo.cn/mmopen/ajNVdqHZLLDicHg2ldsSNmib46PmdzpO7CQEmPjuULp1v45zPWwMYhrnXgvl3OtmUCZSQfgITWn96X9moL94nUGA/0, createdBy=28072041016, createdName=131****1460, createdTime=Tue Sep 19 18:57:45 CST 2017, time=2017-09-19, status=1, ipAttribution=)]
    2017-09-21 szhvet
  5. [GetPortalCommentsPageByObjectIdResponse(id=2087126, encodeId=4c4f208e126d1, content=<a href='/topic/show?id=490750196b' target=_blank style='color:#2F92EE;'>#COMMUN#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=38, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=5019, encryptionId=490750196b, topicName=COMMUN)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=7931272, createdName=liuli5079, createdTime=Sun Oct 29 08:07:00 CST 2017, time=2017-10-29, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1882449, encodeId=6623188244900, content=<a href='/topic/show?id=3b2112532d8' target=_blank style='color:#2F92EE;'>#Nat#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=0, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=12532, encryptionId=3b2112532d8, topicName=Nat)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=2e6f107, createdName=liye789132251, createdTime=Wed Jul 25 05:07:00 CST 2018, time=2018-07-25, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1397327, encodeId=0fc8139e3279a, content=<a href='/topic/show?id=8bee565436d' target=_blank style='color:#2F92EE;'>#损伤#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=43, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=56543, encryptionId=8bee565436d, topicName=损伤)], attachment=null, authenticateStatus=null, createdAvatar=https://thirdwx.qlogo.cn/mmopen/vi_32/DYAIOgq83eoNX3lUOlDKGBUEPNwZx0nibmdcFyeibnX4WMhUSCU2REpGRWtSmnT2CCs0dA5waxvJknYDxwtYnIcQ/132, createdBy=294e2500218, createdName=ms3046638856685384, createdTime=Thu Sep 21 07:07:00 CST 2017, time=2017-09-21, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1509259, encodeId=09be15092599a, content=<a href='/topic/show?id=19791e14471' target=_blank style='color:#2F92EE;'>#Tau#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=35, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=17144, encryptionId=19791e14471, topicName=Tau)], attachment=null, authenticateStatus=null, createdAvatar=null, createdBy=55c610090940, createdName=szhvet, createdTime=Thu Sep 21 07:07:00 CST 2017, time=2017-09-21, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=245743, encodeId=e533245e4324, content=学习了受益匪浅, beContent=null, objectType=article, channel=null, level=null, likeNumber=42, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=https://wx.qlogo.cn/mmopen/ajNVdqHZLLDicHg2ldsSNmib46PmdzpO7CQEmPjuULp1v45zPWwMYhrnXgvl3OtmUCZSQfgITWn96X9moL94nUGA/0, createdBy=28072041016, createdName=131****1460, createdTime=Tue Sep 19 18:57:45 CST 2017, time=2017-09-19, status=1, ipAttribution=)]
    2017-09-19 131****1460

    学习了受益匪浅

    0

相关资讯

Neurology:减少心肺复苏后的脑损伤-实践指南概要

以上就是主要的减少心肺复苏后的脑损伤的策略总结,可用于心肺复苏后的脑损伤保护的临床实践。

STEM CELL REP:中美科学家成功利用电场引导神经干细胞治疗脑损伤

近日,一项刊登在国际杂志Stem Cell Reports上的研究报告中,来自加利福尼亚大学等机构的研究人员通过研究发现,利用电场或能够引导神经干细胞移植到大脑中的特定位点,相关研究或为研究人员开发新方法来有效引导干细胞对大脑损伤修复提供新的思路和希望。文章中,研究者阐明了如何利用电场来指导伤口的愈合,损伤的组织能够产生微弱的电场,研究人员揭示了这些电场如何吸引细胞进入到伤口帮助愈合。

JAMA Neurol:急慢性创伤性脑损伤的生物标志物

血浆P-tau水平以及P-tau/T-tau比例是有效的急慢性外伤性脑损伤诊断和预后的生物标志物

PLOS MED:劳动年龄人口中创伤性脑损伤与痴呆相关

已有的流行病学数据显示,在劳动年龄人口中,具有中度或重度创伤性脑损伤病史的患者可能会有更大几率发展神经退行性疾病。芬兰的研究人员进行了一个全国性的全面调查,评估了劳动年龄人口中,中度至重度创伤性脑损伤历史和神经退行性疾病风险之间的关系。

Intens Care Med:减少脑损伤患者呼吸机相关死亡率的多方位策略!

由此可见,脑损伤患者依从建议的低潮气量、中度PEEP和早期拔管似乎增加了无呼吸机天数。

Neuroradiology:轻度创伤性脑损伤后微出血与创伤后脑功能的相关性

磁敏感加权成像(SWI)以T2*加权梯度回波序列作为序列基础,根据不同组织间的磁敏感性差异提供图像对比增强,可同时获得磁距图像(magnitudeimage)和相位图像(phase image)。 SWI在显示脑内小静脉及出血方面敏感性优于常规梯度回波序列,具有较高的临床应用价值。在轻度创伤性脑损伤(mTBI)后慢性期,在磁共振(MRI)检查中经常会发现微出血灶。然而,微出血与脑功能的相关性尚不明