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Redox Biol:缺血状态下,"两兄弟"神经元和星形胶质细胞之间互相保护

2017-10-17 Emma MedSci原创

神经元(神经细胞)具有长突起,是构成神经系统结构和功能的基本单位。

神经元(神经细胞)具有长突起,是构成神经系统结构和功能的基本单位。星形胶质细胞(Astroglia)是哺乳动物脑内分布最广泛的一类细胞,伸展充填在神经细胞的胞体及其突起之间,起支持和分隔神经细胞的作用,星形胶质细胞与神经元之间存在双向通信,因此研究人员推测在IP(缺血预处理)的情况下,星形胶质细胞可以保护神经元,同时神经元也能保护星形胶质细胞免受致命的缺血性损伤。

研究结果显示,在缺血状态下神经元保护星形胶质细胞,在大多数(非全部)病理状态下,脑或外周器官中细胞之间的双向保护性通信可能是常见活动。

将红藻氨酸注射IP大鼠体内,神经元出现选择性损失,导致大鼠脑中星形胶质细胞凋亡数显著增加。通过TUNEL分析、DNA梯度测定、ROS、GSH、促凋亡因子和抗凋亡因子、抗氧化酶和体外和/或体内的信号分子测定表明,IP神经元通过EPO介导保护星形胶质细胞,抑制促凋亡信号,并通过P13K/ERK/STAT5途径激活抗凋亡蛋白,上调抗氧化蛋白激活抗氧化酶。体外缺血试验中,IPcNCM(IP神经元培养基)能够显著降低LDH,增加星形胶质细胞的活力。

原始出处:
Wu XM, et al. Bi-directionally protective communication between neurons and astrocytes under ischemia. Redox Biol. 2017 Oct;13:20-31. doi: 10.1016/j.redox.2017.05.010.

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    2018-05-11 sunylz
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    2018-01-31 hzj0913

    通过TUNEL分析.DNA梯度测定.ROS.GSH.促凋亡因子和抗凋亡因子.抗氧化酶和体外和/或体内的信号分子测定表明.IP神经元通过EPO介导保护星形胶质细胞.抑制促凋亡信号.并通过P13K/ERK/STAT5途径激活抗凋亡蛋白.上调抗氧化蛋白激活抗氧化酶.体外缺血试验中.IPcNCM(IP神经元培养基)能够显著降低LDH.增加星形胶质细胞的活力.

    0

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    2017-10-18 jefee1214

    学习了

    0

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    2017-10-17 坚强007

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