Baidu
map

Cell Rep: 小脑过度活跃,会引起整个大脑的问题

2019-09-14 佚名 中国生物技术网

9月10日,发表在《Cell Reports》的一项研究中,来自日本京都大学的研究团队发现小脑中的免疫活性诱导动物的神经元过度兴奋,干扰了精神运动行为。



9月10日,发表在《Cell Reports》的一项研究中,来自日本京都大学的研究团队发现小脑中的免疫活性诱导动物的神经元过度兴奋,干扰了精神运动行为。

位于颅骨下背部的小脑,在调节诸如平衡、运动学习和语言等自主运动方面起着关键作用。最近的研究证实了小脑参与了高阶的大脑功能,包括视觉反应、情绪和运动规划。这项新研究还发现其另一个联系——抑郁行为。

该研究团队报告了用大鼠进行的一系列实验,发现急性炎症使小脑处于过度兴奋状态,导致动物的动机和社交能力暂时下降。

研究通讯作者、京都大学Hakubi高级研究中心生物物理系Gen Ohtsuki博士说:“这项研究的开始是为了了解大脑的免疫系统如何改变其活动。事实上,已有文献表明小脑功能障碍与某些广泛性发育障碍(如自闭症和抑郁症)之间存在关联。”


图片来源:Cell Reports

Ohtsuki解释道:“尽管我们现在对小脑在高阶脑功能中的作用有了更进一步的了解,但具体的信号传导机制仍然是个谜。我们对过度免疫活动期间大脑中发生的情况知之甚少。为此我们进行了一系列实验,激活小脑中的免疫细胞,并观察结果。”

视频中,与对照组(左)相比,患有急性小脑炎症的大鼠(中)剥削行为减少。当给予抗炎细胞因子或神经免疫抑制剂时,它们行为恢复正常(右)。视频来源:京都大学

大脑的免疫细胞被称为小胶质细胞,它们对细菌和病毒做出反应以减轻损伤,该反应导致炎症。利用电生理学技术,该研究团队发现,小胶质细胞导致神经元以更高的速率放电,这种现象被称为内在可塑性。这进而又导致小脑进入过度兴奋状态。

这种由免疫触发的反应被证明可以改变行为。当用急性小脑炎症诱导大鼠时时,其社交能力、自由觅食的动机显着下降。

Ohtsuki说:“这些行为调节是抑郁症样行为的迹象。一旦炎症消退,它们就会恢复正常。此外,如果用神经免疫抑制剂和炎症细胞因子治疗大鼠,这种表型可以被挽救。我们还研究了高阶脑区是否也受到影响。对大鼠的fMRI研究显示,前额皮质的活动明显增加,突显了小脑与高阶脑区的相互联系。”

Ohtsuki说:“大脑中过度的免疫活动会诱发行为病理学,我们预计它还会与其他精神和认知疾病有关,如痴呆症。但要了解任何有关病理机制的信息,我们需要将其与遗传风险因素等其他数据结合起来。在这项研究中,我们关注的是炎症。在未来,我们将开始明确阐明这些行为变化的生理、分子和遗传机制。”

该研究结果使研究团队倍感鼓舞,并表示未来还将进一步研究。

原始出处:Masamichi Yamamoto, Minsoo Kim, Hirohiko Imai, et al. Microglia-Triggered Plasticity of Intrinsic Excitability Modulates Psychomotor Behaviors in Acute Cerebellar Inflammation. Cell Rep. SEPTEMBER 10, 2019 

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=2042842, encodeId=f4ec204284282, content=<a href='/topic/show?id=ef3a94013ff' target=_blank style='color:#2F92EE;'>#过度活跃#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=73, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=94013, encryptionId=ef3a94013ff, topicName=过度活跃)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=5e30378, createdName=caobinglei8079, createdTime=Thu Jul 16 02:19:00 CST 2020, time=2020-07-16, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1871421, encodeId=62e018e142181, content=<a href='/topic/show?id=fd764459a8' target=_blank style='color:#2F92EE;'>#Cell#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=67, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=4459, encryptionId=fd764459a8, topicName=Cell)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=524d95, createdName=zhaozhouchifen, createdTime=Mon Mar 02 21:19:00 CST 2020, time=2020-03-02, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1961707, encodeId=36fa1961e074c, content=<a href='/topic/show?id=dbe6445416' target=_blank style='color:#2F92EE;'>#CEL#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=88, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=4454, encryptionId=dbe6445416, topicName=CEL)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=c3ff68, createdName=维他命, createdTime=Sat Dec 07 04:19:00 CST 2019, time=2019-12-07, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=372752, encodeId=08e63e275290, content=学习了谢谢分享, beContent=null, objectType=article, channel=null, level=null, likeNumber=119, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=http://cacheapi.medsci.cn/resource/upload/20160304/IMG56D94856B1B5D6405.jpg, createdBy=27931687771, createdName=一个字-牛, createdTime=Sun Sep 15 13:50:11 CST 2019, time=2019-09-15, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=372726, encodeId=0b473e2726d5, content=学习了,很有用,不错, beContent=null, objectType=article, channel=null, level=null, likeNumber=138, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=https://wx.qlogo.cn/mmopen/oLAjfB7s1ib3IzoRn621JdKCFUI4XvNELcibocrAVU6aUzEVDSaf3rYH08PUYUiagGqxAEhj8g9WqqNvD1CupIpCrmnR2OrqHZh/0, createdBy=7f181365728, createdName=飛歌, createdTime=Sun Sep 15 00:02:23 CST 2019, time=2019-09-15, status=1, ipAttribution=)]
  2. [GetPortalCommentsPageByObjectIdResponse(id=2042842, encodeId=f4ec204284282, content=<a href='/topic/show?id=ef3a94013ff' target=_blank style='color:#2F92EE;'>#过度活跃#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=73, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=94013, encryptionId=ef3a94013ff, topicName=过度活跃)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=5e30378, createdName=caobinglei8079, createdTime=Thu Jul 16 02:19:00 CST 2020, time=2020-07-16, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1871421, encodeId=62e018e142181, content=<a href='/topic/show?id=fd764459a8' target=_blank style='color:#2F92EE;'>#Cell#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=67, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=4459, encryptionId=fd764459a8, topicName=Cell)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=524d95, createdName=zhaozhouchifen, createdTime=Mon Mar 02 21:19:00 CST 2020, time=2020-03-02, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1961707, encodeId=36fa1961e074c, content=<a href='/topic/show?id=dbe6445416' target=_blank style='color:#2F92EE;'>#CEL#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=88, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=4454, encryptionId=dbe6445416, topicName=CEL)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=c3ff68, createdName=维他命, createdTime=Sat Dec 07 04:19:00 CST 2019, time=2019-12-07, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=372752, encodeId=08e63e275290, content=学习了谢谢分享, beContent=null, objectType=article, channel=null, level=null, likeNumber=119, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=http://cacheapi.medsci.cn/resource/upload/20160304/IMG56D94856B1B5D6405.jpg, createdBy=27931687771, createdName=一个字-牛, createdTime=Sun Sep 15 13:50:11 CST 2019, time=2019-09-15, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=372726, encodeId=0b473e2726d5, content=学习了,很有用,不错, beContent=null, objectType=article, channel=null, level=null, likeNumber=138, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=https://wx.qlogo.cn/mmopen/oLAjfB7s1ib3IzoRn621JdKCFUI4XvNELcibocrAVU6aUzEVDSaf3rYH08PUYUiagGqxAEhj8g9WqqNvD1CupIpCrmnR2OrqHZh/0, createdBy=7f181365728, createdName=飛歌, createdTime=Sun Sep 15 00:02:23 CST 2019, time=2019-09-15, status=1, ipAttribution=)]
  3. [GetPortalCommentsPageByObjectIdResponse(id=2042842, encodeId=f4ec204284282, content=<a href='/topic/show?id=ef3a94013ff' target=_blank style='color:#2F92EE;'>#过度活跃#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=73, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=94013, encryptionId=ef3a94013ff, topicName=过度活跃)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=5e30378, createdName=caobinglei8079, createdTime=Thu Jul 16 02:19:00 CST 2020, time=2020-07-16, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1871421, encodeId=62e018e142181, content=<a href='/topic/show?id=fd764459a8' target=_blank style='color:#2F92EE;'>#Cell#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=67, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=4459, encryptionId=fd764459a8, topicName=Cell)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=524d95, createdName=zhaozhouchifen, createdTime=Mon Mar 02 21:19:00 CST 2020, time=2020-03-02, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1961707, encodeId=36fa1961e074c, content=<a href='/topic/show?id=dbe6445416' target=_blank style='color:#2F92EE;'>#CEL#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=88, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=4454, encryptionId=dbe6445416, topicName=CEL)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=c3ff68, createdName=维他命, createdTime=Sat Dec 07 04:19:00 CST 2019, time=2019-12-07, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=372752, encodeId=08e63e275290, content=学习了谢谢分享, beContent=null, objectType=article, channel=null, level=null, likeNumber=119, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=http://cacheapi.medsci.cn/resource/upload/20160304/IMG56D94856B1B5D6405.jpg, createdBy=27931687771, createdName=一个字-牛, createdTime=Sun Sep 15 13:50:11 CST 2019, time=2019-09-15, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=372726, encodeId=0b473e2726d5, content=学习了,很有用,不错, beContent=null, objectType=article, channel=null, level=null, likeNumber=138, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=https://wx.qlogo.cn/mmopen/oLAjfB7s1ib3IzoRn621JdKCFUI4XvNELcibocrAVU6aUzEVDSaf3rYH08PUYUiagGqxAEhj8g9WqqNvD1CupIpCrmnR2OrqHZh/0, createdBy=7f181365728, createdName=飛歌, createdTime=Sun Sep 15 00:02:23 CST 2019, time=2019-09-15, status=1, ipAttribution=)]
    2019-12-07 维他命
  4. [GetPortalCommentsPageByObjectIdResponse(id=2042842, encodeId=f4ec204284282, content=<a href='/topic/show?id=ef3a94013ff' target=_blank style='color:#2F92EE;'>#过度活跃#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=73, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=94013, encryptionId=ef3a94013ff, topicName=过度活跃)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=5e30378, createdName=caobinglei8079, createdTime=Thu Jul 16 02:19:00 CST 2020, time=2020-07-16, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1871421, encodeId=62e018e142181, content=<a href='/topic/show?id=fd764459a8' target=_blank style='color:#2F92EE;'>#Cell#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=67, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=4459, encryptionId=fd764459a8, topicName=Cell)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=524d95, createdName=zhaozhouchifen, createdTime=Mon Mar 02 21:19:00 CST 2020, time=2020-03-02, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1961707, encodeId=36fa1961e074c, content=<a href='/topic/show?id=dbe6445416' target=_blank style='color:#2F92EE;'>#CEL#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=88, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=4454, encryptionId=dbe6445416, topicName=CEL)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=c3ff68, createdName=维他命, createdTime=Sat Dec 07 04:19:00 CST 2019, time=2019-12-07, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=372752, encodeId=08e63e275290, content=学习了谢谢分享, beContent=null, objectType=article, channel=null, level=null, likeNumber=119, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=http://cacheapi.medsci.cn/resource/upload/20160304/IMG56D94856B1B5D6405.jpg, createdBy=27931687771, createdName=一个字-牛, createdTime=Sun Sep 15 13:50:11 CST 2019, time=2019-09-15, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=372726, encodeId=0b473e2726d5, content=学习了,很有用,不错, beContent=null, objectType=article, channel=null, level=null, likeNumber=138, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=https://wx.qlogo.cn/mmopen/oLAjfB7s1ib3IzoRn621JdKCFUI4XvNELcibocrAVU6aUzEVDSaf3rYH08PUYUiagGqxAEhj8g9WqqNvD1CupIpCrmnR2OrqHZh/0, createdBy=7f181365728, createdName=飛歌, createdTime=Sun Sep 15 00:02:23 CST 2019, time=2019-09-15, status=1, ipAttribution=)]
    2019-09-15 一个字-牛

    学习了谢谢分享

    0

  5. [GetPortalCommentsPageByObjectIdResponse(id=2042842, encodeId=f4ec204284282, content=<a href='/topic/show?id=ef3a94013ff' target=_blank style='color:#2F92EE;'>#过度活跃#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=73, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=94013, encryptionId=ef3a94013ff, topicName=过度活跃)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=5e30378, createdName=caobinglei8079, createdTime=Thu Jul 16 02:19:00 CST 2020, time=2020-07-16, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1871421, encodeId=62e018e142181, content=<a href='/topic/show?id=fd764459a8' target=_blank style='color:#2F92EE;'>#Cell#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=67, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=4459, encryptionId=fd764459a8, topicName=Cell)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=524d95, createdName=zhaozhouchifen, createdTime=Mon Mar 02 21:19:00 CST 2020, time=2020-03-02, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1961707, encodeId=36fa1961e074c, content=<a href='/topic/show?id=dbe6445416' target=_blank style='color:#2F92EE;'>#CEL#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=88, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=4454, encryptionId=dbe6445416, topicName=CEL)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=c3ff68, createdName=维他命, createdTime=Sat Dec 07 04:19:00 CST 2019, time=2019-12-07, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=372752, encodeId=08e63e275290, content=学习了谢谢分享, beContent=null, objectType=article, channel=null, level=null, likeNumber=119, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=http://cacheapi.medsci.cn/resource/upload/20160304/IMG56D94856B1B5D6405.jpg, createdBy=27931687771, createdName=一个字-牛, createdTime=Sun Sep 15 13:50:11 CST 2019, time=2019-09-15, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=372726, encodeId=0b473e2726d5, content=学习了,很有用,不错, beContent=null, objectType=article, channel=null, level=null, likeNumber=138, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=https://wx.qlogo.cn/mmopen/oLAjfB7s1ib3IzoRn621JdKCFUI4XvNELcibocrAVU6aUzEVDSaf3rYH08PUYUiagGqxAEhj8g9WqqNvD1CupIpCrmnR2OrqHZh/0, createdBy=7f181365728, createdName=飛歌, createdTime=Sun Sep 15 00:02:23 CST 2019, time=2019-09-15, status=1, ipAttribution=)]
    2019-09-15 飛歌

    学习了,很有用,不错

    0

相关资讯

老年小脑毛细胞型星形细胞瘤伴卒中1例

男,62岁;因“突发头痛、行走不稳10d”于2016年12月入院。病人行走不稳多向右侧倾斜。查体:血压130/80mmHg,神志清楚,双侧瞳孔等大等圆,对光反应灵敏,右侧指鼻试验阳性,四肢肌力、肌张力正常。

Neurology病例:见于小脑卒中的前庭-眼反射缺损

69岁男性,表现为急性眩晕,恶心和呕吐。患者有左侧跳动性眼球震颤和异常的前庭眼反射,右侧头脉冲试验可见扫视矫正。

小脑占位,血管母细胞瘤诊断要点看这里!

病例分享:左侧小脑半球血管母细胞瘤切除一例。

病例:24岁了,她才发现原来自己没有小脑......

小脑容纳的神经元占全脑的50%,起着不可获取的作用,但是本例的患者活到了24都没有人发现她竟然没有小脑,生活与常人无太大差异。

小脑蚓部髓母细胞瘤伴软脑膜转移1例

因头痛7天,呕吐1次入院。

左侧桥脑小脑角室管膜瘤误诊为听神经瘤一例

患者,女,33岁,因“听力下降伴头痛头晕1个月,加重伴呕吐1周”入院。患者于1个月前开始出现左侧听力下降,伴头痛、头晕,当时未做特殊诊治。近1周,患者上述症状明显加重,伴恶心、呕吐,呕吐物为胃内容物,呕吐较为频繁,无法进食;头晕较重,无法正常行走。病程中,患者饮食差,小便正常,大便3d1次,体质量较前下降10kg左右。 查体:生命体征平稳,精神不振,神志清楚;双侧瞳孔直径3.0mm,对光

Baidu
map
Baidu
map
Baidu
map