Redox Biol:IGF-II能够持久恢复神经元细胞损伤

2017-10-17 Emma MedSci原创

IGF家族成员之一IGF-II(胰岛素样生长因子-II)是一种天然存在的激素,在多种神经变性疾病和衰老中发挥神经营养和神经保护作用。

IGF (胰岛素样生长因子) 家族是一类多功能细胞增殖调控因子,在细胞分化、增殖、个体的生长发育中具有重要的促进作用,IGF家族成员之一IGF-II(胰岛素样生长因子-II)是一种天然存在的激素,在多种神经变性疾病和衰老中发挥神经营养和神经保护作用。有研究表明,IGF-II在脑中可能通过与特异性跨膜受体IGFII/M6P受体(IGF-IIR)结合来发挥作用。因此研究人员调查了IGF-II是否具有长时间突触水平上的神经保护和抗氧化作用,并且IGF-IIR是否参与其中。

结果显示,IGF-II能够持久恢复神经元细胞损伤,并且通过与IGF-IIR结合恢复由CORT引起的氧化损伤。该研究表明了IGF-II/IGF-IIR的神经保护作用,针对该途径研发的药物,具有治疗与认知缺陷相关疾病(如神经变性疾病,抑郁症等)的潜力。

其中,研究人员对成年人皮质神经元培养物,进行瞬时高水平的皮质酮(CORT)孵育,引起其氧化损伤。用IGF-II处理后,神经元的氧化应激损伤减少,恢复了抗氧化状态(标准化的总抗氧化状态,脂质氢过氧化物和NAD(P)H:醌氧化还原酶活性)。进行线粒体功能分析(细胞色素c氧化酶活性,线粒体膜电位和亚细胞线粒体分布到)得到上述类似的结果。此外,还评估了神经元损伤和变性情况(突触素和PSD-95表达,突触前功能和Fluoro JadeB?染色)。此外,拮抗剂不能阻断IGF-II的作用,表明IGF-IIR参与这一过程。

原始出处:
Martín-Monta?ez E, et al. IGF-II promotes neuroprotection and neuroplasticity recovery in a long-lasting model of oxidative damage induced by glucocorticoids. Redox Biol. 2017 Oct;13:69-81. doi: 10.1016/j.redox.2017.05.012.

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    2018-02-01 xxxx1049
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    2017-11-01 sunylz
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    2017-10-17 坚强007

    学习

    0

  6. [GetPortalCommentsPageByObjectIdResponse(id=1767260, encodeId=aeee1e672601c, content=<a href='/topic/show?id=64f5343e2f' target=_blank style='color:#2F92EE;'>#Biol#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=33, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=3437, encryptionId=64f5343e2f, topicName=Biol)], attachment=null, authenticateStatus=null, createdAvatar=null, createdBy=446937890434, createdName=12498ebem31暂无昵称, createdTime=Fri Dec 15 23:23:00 CST 2017, time=2017-12-15, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=2039531, encodeId=81cc203953108, content=<a href='/topic/show?id=ca1294914d' target=_blank style='color:#2F92EE;'>#IGF#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=50, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=9491, encryptionId=ca1294914d, topicName=IGF)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=9dd613, createdName=xxxx1049, createdTime=Thu Feb 01 21:23:00 CST 2018, time=2018-02-01, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1917706, encodeId=69ed191e7069a, content=<a href='/topic/show?id=4f26341994' target=_blank style='color:#2F92EE;'>#Bio#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=24, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=3419, encryptionId=4f26341994, topicName=Bio)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=12de429, createdName=sunylz, createdTime=Wed Nov 01 14:23:00 CST 2017, time=2017-11-01, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1397344, encodeId=876c139e34419, content=<a href='/topic/show?id=8bee565436d' target=_blank style='color:#2F92EE;'>#损伤#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=29, 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 Oct 19 07:23:00 CST 2017, time=2017-10-19, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=253788, encodeId=2325253e88e0, content=学习, beContent=null, objectType=article, channel=null, level=null, likeNumber=49, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=e5171668917, createdName=坚强007, createdTime=Tue Oct 17 19:58:28 CST 2017, time=2017-10-17, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=253781, encodeId=8242253e816a, content=学习了.谢谢., beContent=null, objectType=article, channel=null, level=null, likeNumber=60, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=https://wx.qlogo.cn/mmopen/xkvRjYnJzzRJ2R0y7VhicibvkjPWHjIMmu4ZpKnE9cWAu4lVicS3uDUCfF4M4JWvrkrYfpb2KehPV0Ee29tPqyPEebBUibiaKhnvD/0, createdBy=f8412001184, createdName=惠映实验室, createdTime=Tue Oct 17 19:32:01 CST 2017, time=2017-10-17, status=1, ipAttribution=)]
    2017-10-17 惠映实验室

    学习了.谢谢.

    0

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