PNAS:缺氧条件下能够减少和逆转Leigh氏综合症导致的神经病变

2017-05-24 MedSci MedSci原创

这项研究确立了通过调整减少氧气的呼吸量可以改善或者逆转神经系统的病变。但是未来如何开发安全和有效的缺氧疗法,仍需要大量工作。

Leigh氏综合症是最常见因为线粒体功能缺陷所引起的小儿疾病。Leigh氏综合症,表现为一种偶发性的亚急性神经变性,患病的幼儿可能在生命的头几年内导致死亡,而且目前为止没有经过验证有效的疗法。在小鼠动物模型中,缺乏Ndufs4蛋白的小鼠会发生类似于Leigh氏综合症的致命性脑病及神经坏死,大概死于出生后的60天。

在最新上线的PNAS杂志上,Michele Ferrari及其同事报导了他们的发现,通过给予缺氧(hypoxia)治疗方法可以在实验小鼠模型上减缓和减轻神经坏死和脑损伤。

在之前的报道中,研究人员我报告说,从早期开始,如果维持呼吸的氧气量为正常的11%,则可以防止神经系统疾病,并且显着改善这些小鼠的生存率。在这项研究报道中,研究人员发现:因为缺少Ndufs4蛋白的小鼠如果暴露于正常的氧气环境中,会在出生后的60天左右死于神经变性和脑坏死。但是经过缺氧治疗的小鼠最终可以存活到出生后的270天,而死因可能来自心脏病。

可惜的是,如果持续维持17%氧气,或者间歇性的缺氧,则对延缓神经坏死无效。在对于晚期脑病的小鼠中进行缺氧治疗后,可以逆转其已建立的神经系统疾病,改善其行动行为,各项生物体征改善,延长存活时间。重要的是,在4周缺氧治疗后,通过核磁共振检测发现,本来的神经组织中的病变发现改善。但是如果小鼠在恢复到正常的氧气含量时,之后的几天内就会死亡。

这项研究确立了通过调整减少氧气的呼吸量可以改善或者逆转神经系统的病变。但是未来如何开发安全和有效的缺氧疗法,仍需要大量工作。

原始出处:
Michele Ferrari et al. Hypoxia treatment reverses neurodegenerative disease in a mouse model of Leigh syndrome. PNAS (2017) May 8, 2017, doi: 10.1073/pnas.1621511114

本文系梅斯医学(MedSci)原创编译整理,转载需授权!

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=1856005, encodeId=546d18560052c, content=<a href='/topic/show?id=f32014428fc' target=_blank style='color:#2F92EE;'>#PNAS#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=28, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=14428, encryptionId=f32014428fc, topicName=PNAS)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=08e964, createdName=drwjr, createdTime=Fri Sep 29 23:53:00 CST 2017, time=2017-09-29, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1491263, encodeId=720f149126324, content=<a href='/topic/show?id=5316e4387aa' target=_blank style='color:#2F92EE;'>#神经病#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=44, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=74387, encryptionId=5316e4387aa, topicName=神经病)], attachment=null, authenticateStatus=null, createdAvatar=null, createdBy=1ab48885684, createdName=axin012, createdTime=Thu May 25 23:53:00 CST 2017, time=2017-05-25, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1500344, encodeId=6115150034414, content=<a href='/topic/show?id=ecdfe438970' target=_blank style='color:#2F92EE;'>#神经病变#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=0, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=74389, encryptionId=ecdfe438970, topicName=神经病变)], attachment=null, authenticateStatus=null, createdAvatar=null, createdBy=0ea69427176, createdName=lingaifan, createdTime=Thu May 25 23:53:00 CST 2017, time=2017-05-25, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=201994, encodeId=470f2019944e, content=学习一下知识, beContent=null, objectType=article, channel=null, level=null, likeNumber=48, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=http://cacheapi.medsci.cn/resource/upload/20160718/IMG578C993D395567540.jpg, createdBy=59b81918946, createdName=flysky120, createdTime=Wed May 24 09:39:53 CST 2017, time=2017-05-24, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=201981, encodeId=42e92019814b, content=谢谢分享,学习了, beContent=null, objectType=article, channel=null, level=null, likeNumber=67, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=https://wx.qlogo.cn/mmopen/NUyjXTCJjo6Nx0VGA4QMDzOP8oAgnV4h51EjSfehJ9QxyiaSmw8PB56BhY8KXFSxHCibXrzcy4abrzSibXQPxJ9kzrLcJyhhB8a/0, createdBy=1d3b1672603, createdName=明月清辉, createdTime=Wed May 24 09:16:20 CST 2017, time=2017-05-24, status=1, ipAttribution=)]
    2017-09-29 drwjr
  2. [GetPortalCommentsPageByObjectIdResponse(id=1856005, encodeId=546d18560052c, content=<a href='/topic/show?id=f32014428fc' target=_blank style='color:#2F92EE;'>#PNAS#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=28, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=14428, encryptionId=f32014428fc, topicName=PNAS)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=08e964, createdName=drwjr, createdTime=Fri Sep 29 23:53:00 CST 2017, time=2017-09-29, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1491263, encodeId=720f149126324, content=<a href='/topic/show?id=5316e4387aa' target=_blank style='color:#2F92EE;'>#神经病#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=44, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=74387, encryptionId=5316e4387aa, topicName=神经病)], attachment=null, authenticateStatus=null, createdAvatar=null, createdBy=1ab48885684, createdName=axin012, createdTime=Thu May 25 23:53:00 CST 2017, time=2017-05-25, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1500344, encodeId=6115150034414, content=<a href='/topic/show?id=ecdfe438970' target=_blank style='color:#2F92EE;'>#神经病变#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=0, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=74389, encryptionId=ecdfe438970, topicName=神经病变)], attachment=null, authenticateStatus=null, createdAvatar=null, createdBy=0ea69427176, createdName=lingaifan, createdTime=Thu May 25 23:53:00 CST 2017, time=2017-05-25, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=201994, encodeId=470f2019944e, content=学习一下知识, beContent=null, objectType=article, channel=null, level=null, likeNumber=48, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=http://cacheapi.medsci.cn/resource/upload/20160718/IMG578C993D395567540.jpg, createdBy=59b81918946, createdName=flysky120, createdTime=Wed May 24 09:39:53 CST 2017, time=2017-05-24, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=201981, encodeId=42e92019814b, content=谢谢分享,学习了, beContent=null, objectType=article, channel=null, level=null, likeNumber=67, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=https://wx.qlogo.cn/mmopen/NUyjXTCJjo6Nx0VGA4QMDzOP8oAgnV4h51EjSfehJ9QxyiaSmw8PB56BhY8KXFSxHCibXrzcy4abrzSibXQPxJ9kzrLcJyhhB8a/0, createdBy=1d3b1672603, createdName=明月清辉, createdTime=Wed May 24 09:16:20 CST 2017, time=2017-05-24, status=1, ipAttribution=)]
    2017-05-25 axin012
  3. [GetPortalCommentsPageByObjectIdResponse(id=1856005, encodeId=546d18560052c, content=<a href='/topic/show?id=f32014428fc' target=_blank style='color:#2F92EE;'>#PNAS#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=28, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=14428, encryptionId=f32014428fc, topicName=PNAS)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=08e964, createdName=drwjr, createdTime=Fri Sep 29 23:53:00 CST 2017, time=2017-09-29, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1491263, encodeId=720f149126324, content=<a href='/topic/show?id=5316e4387aa' target=_blank style='color:#2F92EE;'>#神经病#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=44, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=74387, encryptionId=5316e4387aa, topicName=神经病)], attachment=null, authenticateStatus=null, createdAvatar=null, createdBy=1ab48885684, createdName=axin012, createdTime=Thu May 25 23:53:00 CST 2017, time=2017-05-25, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1500344, encodeId=6115150034414, content=<a href='/topic/show?id=ecdfe438970' target=_blank style='color:#2F92EE;'>#神经病变#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=0, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=74389, encryptionId=ecdfe438970, topicName=神经病变)], attachment=null, authenticateStatus=null, createdAvatar=null, createdBy=0ea69427176, createdName=lingaifan, createdTime=Thu May 25 23:53:00 CST 2017, time=2017-05-25, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=201994, encodeId=470f2019944e, content=学习一下知识, beContent=null, objectType=article, channel=null, level=null, likeNumber=48, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=http://cacheapi.medsci.cn/resource/upload/20160718/IMG578C993D395567540.jpg, createdBy=59b81918946, createdName=flysky120, createdTime=Wed May 24 09:39:53 CST 2017, time=2017-05-24, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=201981, encodeId=42e92019814b, content=谢谢分享,学习了, beContent=null, objectType=article, channel=null, level=null, likeNumber=67, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=https://wx.qlogo.cn/mmopen/NUyjXTCJjo6Nx0VGA4QMDzOP8oAgnV4h51EjSfehJ9QxyiaSmw8PB56BhY8KXFSxHCibXrzcy4abrzSibXQPxJ9kzrLcJyhhB8a/0, createdBy=1d3b1672603, createdName=明月清辉, createdTime=Wed May 24 09:16:20 CST 2017, time=2017-05-24, status=1, ipAttribution=)]
  4. [GetPortalCommentsPageByObjectIdResponse(id=1856005, encodeId=546d18560052c, content=<a href='/topic/show?id=f32014428fc' target=_blank style='color:#2F92EE;'>#PNAS#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=28, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=14428, encryptionId=f32014428fc, topicName=PNAS)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=08e964, createdName=drwjr, createdTime=Fri Sep 29 23:53:00 CST 2017, time=2017-09-29, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1491263, encodeId=720f149126324, content=<a href='/topic/show?id=5316e4387aa' target=_blank style='color:#2F92EE;'>#神经病#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=44, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=74387, encryptionId=5316e4387aa, topicName=神经病)], attachment=null, authenticateStatus=null, createdAvatar=null, createdBy=1ab48885684, createdName=axin012, createdTime=Thu May 25 23:53:00 CST 2017, time=2017-05-25, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1500344, encodeId=6115150034414, content=<a href='/topic/show?id=ecdfe438970' target=_blank style='color:#2F92EE;'>#神经病变#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=0, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=74389, encryptionId=ecdfe438970, topicName=神经病变)], attachment=null, authenticateStatus=null, createdAvatar=null, createdBy=0ea69427176, createdName=lingaifan, createdTime=Thu May 25 23:53:00 CST 2017, time=2017-05-25, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=201994, encodeId=470f2019944e, content=学习一下知识, beContent=null, objectType=article, channel=null, level=null, likeNumber=48, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=http://cacheapi.medsci.cn/resource/upload/20160718/IMG578C993D395567540.jpg, createdBy=59b81918946, createdName=flysky120, createdTime=Wed May 24 09:39:53 CST 2017, time=2017-05-24, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=201981, encodeId=42e92019814b, content=谢谢分享,学习了, beContent=null, objectType=article, channel=null, level=null, likeNumber=67, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=https://wx.qlogo.cn/mmopen/NUyjXTCJjo6Nx0VGA4QMDzOP8oAgnV4h51EjSfehJ9QxyiaSmw8PB56BhY8KXFSxHCibXrzcy4abrzSibXQPxJ9kzrLcJyhhB8a/0, createdBy=1d3b1672603, createdName=明月清辉, createdTime=Wed May 24 09:16:20 CST 2017, time=2017-05-24, status=1, ipAttribution=)]
    2017-05-24 flysky120

    学习一下知识

    0

  5. [GetPortalCommentsPageByObjectIdResponse(id=1856005, encodeId=546d18560052c, content=<a href='/topic/show?id=f32014428fc' target=_blank style='color:#2F92EE;'>#PNAS#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=28, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=14428, encryptionId=f32014428fc, topicName=PNAS)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=08e964, createdName=drwjr, createdTime=Fri Sep 29 23:53:00 CST 2017, time=2017-09-29, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1491263, encodeId=720f149126324, content=<a href='/topic/show?id=5316e4387aa' target=_blank style='color:#2F92EE;'>#神经病#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=44, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=74387, encryptionId=5316e4387aa, topicName=神经病)], attachment=null, authenticateStatus=null, createdAvatar=null, createdBy=1ab48885684, createdName=axin012, createdTime=Thu May 25 23:53:00 CST 2017, time=2017-05-25, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1500344, encodeId=6115150034414, content=<a href='/topic/show?id=ecdfe438970' target=_blank style='color:#2F92EE;'>#神经病变#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=0, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=74389, encryptionId=ecdfe438970, topicName=神经病变)], attachment=null, authenticateStatus=null, createdAvatar=null, createdBy=0ea69427176, createdName=lingaifan, createdTime=Thu May 25 23:53:00 CST 2017, time=2017-05-25, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=201994, encodeId=470f2019944e, content=学习一下知识, beContent=null, objectType=article, channel=null, level=null, likeNumber=48, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=http://cacheapi.medsci.cn/resource/upload/20160718/IMG578C993D395567540.jpg, createdBy=59b81918946, createdName=flysky120, createdTime=Wed May 24 09:39:53 CST 2017, time=2017-05-24, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=201981, encodeId=42e92019814b, content=谢谢分享,学习了, beContent=null, objectType=article, channel=null, level=null, likeNumber=67, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=https://wx.qlogo.cn/mmopen/NUyjXTCJjo6Nx0VGA4QMDzOP8oAgnV4h51EjSfehJ9QxyiaSmw8PB56BhY8KXFSxHCibXrzcy4abrzSibXQPxJ9kzrLcJyhhB8a/0, createdBy=1d3b1672603, createdName=明月清辉, createdTime=Wed May 24 09:16:20 CST 2017, time=2017-05-24, status=1, ipAttribution=)]
    2017-05-24 明月清辉

    谢谢分享,学习了

    0

相关资讯

研究揭示缺氧如何导致细菌引发痤疮

这有点像双重人格者。在某个时刻,皮肤上的细菌是无害的,而下一刻,它们正在全面引发斑点状的粉刺。如今,研究人员发现了这一切是如何发生的。而该突破或许有望在两年内催生新的痤疮治疗方法。相关成果日前发表于《科学—免疫学》杂志。 来自美国加州大学圣地亚哥分校的Richard Gallo和同事发现,当一种生活在皮肤表面的无害细菌发现自己困在诸如毛囊等缺少空气的油性环境中时会变“坏”,从而触发炎

GUT:缺氧诱导肝细胞癌的新机制

近期,一项发表在杂志GUT上的文章研究了缺氧微环境和缺氧诱导因子(HIFs)对肝细胞癌(HCC)癌症干性的影响和机制。通过自我更新能力,化学抗性,干性相关基因和癌症干细胞(CSC)标记物阳性细胞群的表达来分析HCC癌干性。使用定量PCR在人配对HCC中检查特异性小泛素样修饰(SUMO)蛋白酶1(SENP1)的mRNA水平。使用免疫沉淀检查蛋白质的结合;染色质免疫沉淀测定HIF与缺氧响应元件序列的结

Cell:HIF-1在缺氧中调节的新靶点!

缺氧不仅影响发育,也是许多人类疾病的病理性刺激。细胞水平上对缺氧的反应依赖于转录因子家族的缺氧诱导因子(HIF)的活性。HIF-1负责急性反应并涉及细胞代谢、细胞死亡和细胞生长的各种基因。近期,一项发表在权威杂志Cells上的研究显示了缺氧导致人赖氨酸(K)特异性脱甲基酶2(KDM2)家族的成员KDM2A和KDM2B以及黑腹果蝇KDM2组蛋白和蛋白脱甲基酶的mRNA水平的增加。在人类细胞中,KDM

先天性心脏病如何影响脑发育

很多儿童患有先天性心脏病(CHD),在美国,这是最常见的出生缺陷之一。这些患儿不仅心脏有功能障碍,也容易出现行为、思维和学习等中枢神经系统功能异常。现在,研究人员首次揭示了心脏畸形诱发的大脑缺氧如何阻碍新生儿的大脑发育。这为研发能在婴儿出生前使用的潜在疗法铺平了道路。

PNAS:缺氧也能治病?逆转神经退行性疾病造成的脑损伤!

当细胞的线粒体不能正常工作时,人体会发生线粒体疾病。一项新研究表明,缺氧可能对线粒体功能不全造成的脑损伤有一定的保护作用,这一研究发表在近日的PNAS。线粒体是细胞内的“发电厂”。人类多种疾病,如神经退行性疾病、糖尿病、肿瘤等都与线粒体功能障碍有关。Leigh氏综合征就是一种与线粒体缺陷有关的神经退行性疾病。该病以脑损伤,运动技能和肌张力的逐渐丧失,发育迟缓为特征。并发症可导致心脏,呼吸和肾脏功能

BJC:缺氧会导致鳞癌细胞中EGFR的下调

表皮生长因子受体(EGFR)被广泛认为是驱动头颈部鳞状细胞癌(HNSCC)形成的因素之一。使用单克隆抗体抑制EGFR,已经得到了很好的评估。 HNSCCs组织里富含缺氧组织,而缺氧已被证实参与了下调EGFR膜的表达。 研究纳入58例HNSCCs和9例正常/癌症邻近组织,建立一种新的多重免疫荧光和单细胞分割(通过DAPI染色的细胞核)方法,研究组织中EGFR的表达、内源性缺氧标记CA I