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Sci Rep:有了这项技术,阿尔兹海默病的进展尽在掌握之中!

2017-11-24 佚名 medicalxpress

特文特大学的科学家利用“拉曼”光学技术,现在可以生成受阿尔茨海默病影响的脑组织图像。图像还包括周边区域,已经显示出变化。

现在特文特大学的科学家利用“Raman”光学技术,可以生成受阿尔茨海默病影响的脑组织图像。图像还包括已经显示出变化的周边区域。

阿尔茨海默病与脑组织中蛋白质浓度高的区域相关:斑块和缠结。拉曼成像现在被用来获得这些受影响地区的清晰图像。这是一个有吸引力的技术,因为它显示的信息比涉及的特定蛋白质更多。受到蛋白质存在影响的水和脂质也可以被检测到。研究人员利用这项技术研究了四个脑供体的脑组织,其中三个与阿尔茨海默病有关。

受影响的区域可以通过这种方式以清晰明了的方式展现出来。在图像处理之后,即使是处在健康组织和受影响组织之间的过渡区域也可以显示,这也可以演示疾病在大脑中是如何传播的。同时即使在健康人的脑组织中,也能检测出具有蛋白质活性的小区域。这可能是神经退行性疾病的一个征兆。

Raman显微镜使用激光束来检测化学物质。反射光和散射光能给出样品中存在的物质的指示。在每一个四个大脑样品中,以这种方式检查了4096个光谱。Raman的主要优点在于化学品不需要预处理,而是“无标签”。在化学分析中,Raman已经被证明是一个强大的技术。

在该实验中,Raman被用来检查身体外的脑组织,但它甚至可以在手术中用于“体内”检测特定区域。与MRI,PET和CT成像相比,Raman能够以非常高的精度检测比细胞更小的区域。所以,它可以是一个非常有价值的先进技术。Raman图像现在用于显示神经细胞水平上的蛋白质活性,但由于其灵敏度足够高,可以检测更小的区域 - 就像健康人的大脑样本一样。

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    2017-11-26 神功盖世

    阿尔兹海默病技术

    0

  2. [GetPortalCommentsPageByObjectIdResponse(id=264475, encodeId=0cc02644e5a9, content=阿尔兹海默病技术, beContent=null, objectType=article, channel=null, level=null, likeNumber=106, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=https://wx.qlogo.cn/mmopen/vi_32/fhZdOu27e88Voqh19n8eF8cLplo8L4nicKtH0WnE3KFELXns5XDu8rsiceK2HHDZc2SEStia5VV3Pia2QLMVqlWbHw/0, createdBy=6e012139475, createdName=神功盖世, createdTime=Sun Nov 26 10:58:21 CST 2017, time=2017-11-26, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1402739, encodeId=0b6f1402e395c, content=<a href='/topic/show?id=60ca9e761ce' target=_blank style='color:#2F92EE;'>#阿尔兹海默#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=64, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=97761, encryptionId=60ca9e761ce, topicName=阿尔兹海默)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=be952422716, createdName=habb, createdTime=Sun Nov 26 03:20:00 CST 2017, time=2017-11-26, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=263980, encodeId=6bfd26398099, content=很好.谢谢分享, beContent=null, objectType=article, channel=null, level=null, likeNumber=111, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=https://wx.qlogo.cn/mmopen/Q3auHgzwzM4o2XVpJ6449yqDsjibydI5HnJ8MibGxNn4HZiaZib0bdfibbwoz3KQrIyN9AGxq36ZlZRNicYlPfOOWMtwgsajY6mGNFiaPclFdowjD0/0, createdBy=97bd1338592, createdName=清风拂面, createdTime=Fri Nov 24 16:06:19 CST 2017, time=2017-11-24, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=263975, encodeId=d8182639e523, content=好技术.学习了.必须的., beContent=null, objectType=article, channel=null, level=null, likeNumber=113, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=60791943465, createdName=1e0f8808m18(暂无匿称), createdTime=Fri Nov 24 16:04:45 CST 2017, time=2017-11-24, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=263943, encodeId=7f7926394380, content=学习了.谢谢., beContent=null, objectType=article, channel=null, level=null, likeNumber=92, 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=Fri Nov 24 12:47:42 CST 2017, time=2017-11-24, status=1, ipAttribution=)]
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    2017-11-24 清风拂面

    很好.谢谢分享

    0

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    2017-11-24 1e0f8808m18(暂无匿称)

    好技术.学习了.必须的.

    0

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    2017-11-24 惠映实验室

    学习了.谢谢.

    0

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阿尔茨海默病协会(Alzheimer's Association)今天宣布推出一项投资达2000万美元的两年期临床试验,检验多维生活方式干预是否能够预防认知衰退和痴呆,试验对象为2500名目前没有认知方面疾病症状但后期认知衰退风险会增加的老年人。这项公告在2017年伦敦阿尔茨海默病协会国际会议(AAIC 2017)上做出。这项通过生活方式干预降低风险从而实现保护的大型美国试验(简称US POI

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记忆是人类适应其生存环境所需要的最基本能力,也是人们最宝贵的财富。然而,每年有许许多多的人因为阿尔兹海默病(AD)或者意外事故而丧失记忆,对患者以及家人造成了严重的影响。那么有没有办法帮助这些人恢复丧失的记忆呢?

重 Cell:揭示阿尔兹海默病新机制,大脑“清洁工”能量不足,无法清除蛋白斑

TREM2是小胶质细胞表明的一种受体,与阿茨海默病密切相关。携带TREM2特定突变的人患AD的风险高了五倍。近日,一项发表于Cell上的新研究发现,TREM2的高风险突变会导致小胶质细胞能量赤字。当这些细胞在能量亏空情况下工作时,它们无法保护神经元免受蛋白斑的损伤。

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