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JAMA Neurol:端粒缩短和阿尔兹海默氏症发病风险之间存在因果关联

2015-10-19 佚名 生物谷

图片来源:med.stanford.edu 一项发表在国际杂志JAMA Neurol上的研究论文中,来自瑞典卡罗琳学院的科学家们通过研究发现,染色体端粒的缩短或和引发阿尔兹海默氏症激活机制之间存在统计学上的关系,然而这种效应较小,而且并不能利用端粒的长度来评估个体患阿尔兹海默氏症的水平。 我们机体中的每一个细胞都包含有整个基因组,基因组以形成46条染色体的形式包裹于细胞核中,当细胞分裂时染

图片来源:med.stanford.edu

一项发表在国际杂志JAMA Neurol上的研究论文中,来自瑞典卡罗琳学院的科学家们通过研究发现,染色体端粒的缩短或和引发阿尔兹海默氏症激活机制之间存在统计学上的关系,然而这种效应较小,而且并不能利用端粒的长度来评估个体患阿尔兹海默氏症的水平。

我们机体中的每一个细胞都包含有整个基因组,基因组以形成46条染色体的形式包裹于细胞核中,当细胞分裂时染色体端的端粒就会缩短直至达到一种危险的水平,当达到危险水平时候细胞就会死亡,当然这个危险的阈值取决于个体,部分是因为每个个体端粒的起始长度不一样,而且对于某些个体,相比其它人而言,他们的端粒缩短的程度较严重,此前研究将端粒长度作为预测机体生物老化的一个标志物。

这项研究中,研究人员首次揭示了端粒长度和个体患阿尔兹海默氏症之间存在一种因果关系,研究者Sara H说道,本文中我们首次发现了这种因果关系,而且端粒参与了引发阿尔兹海默氏症发病的实际激活机制。

随后研究人员利用此前的一些研究数据,即通过检测整个基因组来鉴别出联系端粒长度和阿尔兹海默氏症发病风险的基因突变,随后通过设计新型试验,研究者发现这两者之间存在一定的统计学关联,由于端粒缩短的过程较为复杂,因此研究者并不确定通过测定个体机体染色体端粒的长度是否可以帮助预测个体患阿尔兹海默氏症的风险。

最后研究者Hagg说道,虽然这种效应较小,但从生物学长远角度来看,进行深入研究来剖析端粒长度和阿尔兹海默氏症发病风险之间的关联却是非常具有意义的。

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    2016-07-24 yinhl1978
  2. [GetPortalCommentsPageByObjectIdResponse(id=1999581, encodeId=0596199958151, content=<a href='/topic/show?id=d5df12695e6' target=_blank style='color:#2F92EE;'>#Neurol#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=0, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=12695, encryptionId=d5df12695e6, topicName=Neurol)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=8217292, createdName=yinhl1978, createdTime=Sun Jul 24 02:04:00 CST 2016, time=2016-07-24, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=49646, encodeId=f0c549646b9, content=很值得好学习, beContent=null, objectType=article, channel=null, level=null, likeNumber=184, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=45101626056, createdName=忠诚向上, createdTime=Sun Dec 27 20:48:00 CST 2015, time=2015-12-27, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1402670, encodeId=83e914026e0b6, 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=71, 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=Wed Oct 21 00:04:00 CST 2015, time=2015-10-21, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=39576, encodeId=828b395e6be, content=赞一个~, beContent=null, objectType=article, channel=null, level=null, likeNumber=214, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=http://cdnapi.center.medsci.cn/medsci/head/2019/05/26/5e1df344d663496bdfd43c465d409e2c.jpg, createdBy=bce679058, createdName=sunlong28, createdTime=Mon Oct 19 12:52:00 CST 2015, time=2015-10-19, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=39577, encodeId=5ca2395e7d6, content=非常感谢~, beContent=null, objectType=article, channel=null, level=null, likeNumber=149, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=http://cdnapi.center.medsci.cn/medsci/head/2019/05/26/5e1df344d663496bdfd43c465d409e2c.jpg, createdBy=bce679058, createdName=sunlong28, createdTime=Mon Oct 19 12:52:00 CST 2015, time=2015-10-19, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=39578, encodeId=5ff9395e841, content=感谢分享~, beContent=null, objectType=article, channel=null, level=null, likeNumber=153, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=http://cdnapi.center.medsci.cn/medsci/head/2019/05/26/5e1df344d663496bdfd43c465d409e2c.jpg, createdBy=bce679058, createdName=sunlong28, createdTime=Mon Oct 19 12:52:00 CST 2015, time=2015-10-19, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=39579, encodeId=211a395e926, content=为了积分我也是拼了~, beContent=null, objectType=article, channel=null, level=null, likeNumber=226, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=http://cdnapi.center.medsci.cn/medsci/head/2019/05/26/5e1df344d663496bdfd43c465d409e2c.jpg, createdBy=bce679058, createdName=sunlong28, createdTime=Mon Oct 19 12:52:00 CST 2015, time=2015-10-19, status=1, ipAttribution=)]
    2015-12-27 忠诚向上

    很值得好学习

    0

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    2015-10-19 sunlong28

    赞一个~

    0

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    2015-10-19 sunlong28

    非常感谢~

    0

  6. [GetPortalCommentsPageByObjectIdResponse(id=1999581, encodeId=0596199958151, content=<a href='/topic/show?id=d5df12695e6' target=_blank style='color:#2F92EE;'>#Neurol#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=0, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=12695, encryptionId=d5df12695e6, topicName=Neurol)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=8217292, createdName=yinhl1978, createdTime=Sun Jul 24 02:04:00 CST 2016, time=2016-07-24, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=49646, encodeId=f0c549646b9, content=很值得好学习, beContent=null, objectType=article, channel=null, level=null, likeNumber=184, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=45101626056, createdName=忠诚向上, createdTime=Sun Dec 27 20:48:00 CST 2015, time=2015-12-27, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1402670, encodeId=83e914026e0b6, 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=71, 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=Wed Oct 21 00:04:00 CST 2015, time=2015-10-21, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=39576, encodeId=828b395e6be, content=赞一个~, beContent=null, objectType=article, channel=null, level=null, likeNumber=214, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=http://cdnapi.center.medsci.cn/medsci/head/2019/05/26/5e1df344d663496bdfd43c465d409e2c.jpg, createdBy=bce679058, createdName=sunlong28, createdTime=Mon Oct 19 12:52:00 CST 2015, time=2015-10-19, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=39577, encodeId=5ca2395e7d6, content=非常感谢~, beContent=null, objectType=article, channel=null, level=null, likeNumber=149, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=http://cdnapi.center.medsci.cn/medsci/head/2019/05/26/5e1df344d663496bdfd43c465d409e2c.jpg, createdBy=bce679058, createdName=sunlong28, createdTime=Mon Oct 19 12:52:00 CST 2015, time=2015-10-19, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=39578, encodeId=5ff9395e841, content=感谢分享~, beContent=null, objectType=article, channel=null, level=null, likeNumber=153, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=http://cdnapi.center.medsci.cn/medsci/head/2019/05/26/5e1df344d663496bdfd43c465d409e2c.jpg, createdBy=bce679058, createdName=sunlong28, createdTime=Mon Oct 19 12:52:00 CST 2015, time=2015-10-19, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=39579, encodeId=211a395e926, content=为了积分我也是拼了~, beContent=null, objectType=article, channel=null, level=null, likeNumber=226, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=http://cdnapi.center.medsci.cn/medsci/head/2019/05/26/5e1df344d663496bdfd43c465d409e2c.jpg, createdBy=bce679058, createdName=sunlong28, createdTime=Mon Oct 19 12:52:00 CST 2015, time=2015-10-19, status=1, ipAttribution=)]
    2015-10-19 sunlong28

    感谢分享~

    0

  7. [GetPortalCommentsPageByObjectIdResponse(id=1999581, encodeId=0596199958151, content=<a href='/topic/show?id=d5df12695e6' target=_blank style='color:#2F92EE;'>#Neurol#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=0, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=12695, encryptionId=d5df12695e6, topicName=Neurol)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=8217292, createdName=yinhl1978, createdTime=Sun Jul 24 02:04:00 CST 2016, time=2016-07-24, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=49646, encodeId=f0c549646b9, content=很值得好学习, beContent=null, objectType=article, channel=null, level=null, likeNumber=184, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=45101626056, createdName=忠诚向上, createdTime=Sun Dec 27 20:48:00 CST 2015, time=2015-12-27, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1402670, encodeId=83e914026e0b6, 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=71, 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=Wed Oct 21 00:04:00 CST 2015, time=2015-10-21, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=39576, encodeId=828b395e6be, content=赞一个~, beContent=null, objectType=article, channel=null, level=null, likeNumber=214, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=http://cdnapi.center.medsci.cn/medsci/head/2019/05/26/5e1df344d663496bdfd43c465d409e2c.jpg, createdBy=bce679058, createdName=sunlong28, createdTime=Mon Oct 19 12:52:00 CST 2015, time=2015-10-19, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=39577, encodeId=5ca2395e7d6, content=非常感谢~, beContent=null, objectType=article, channel=null, level=null, likeNumber=149, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=http://cdnapi.center.medsci.cn/medsci/head/2019/05/26/5e1df344d663496bdfd43c465d409e2c.jpg, createdBy=bce679058, createdName=sunlong28, createdTime=Mon Oct 19 12:52:00 CST 2015, time=2015-10-19, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=39578, encodeId=5ff9395e841, content=感谢分享~, beContent=null, objectType=article, channel=null, level=null, likeNumber=153, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=http://cdnapi.center.medsci.cn/medsci/head/2019/05/26/5e1df344d663496bdfd43c465d409e2c.jpg, createdBy=bce679058, createdName=sunlong28, createdTime=Mon Oct 19 12:52:00 CST 2015, time=2015-10-19, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=39579, encodeId=211a395e926, content=为了积分我也是拼了~, beContent=null, objectType=article, channel=null, level=null, likeNumber=226, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=http://cdnapi.center.medsci.cn/medsci/head/2019/05/26/5e1df344d663496bdfd43c465d409e2c.jpg, createdBy=bce679058, createdName=sunlong28, createdTime=Mon Oct 19 12:52:00 CST 2015, time=2015-10-19, status=1, ipAttribution=)]
    2015-10-19 sunlong28

    为了积分我也是拼了~

    0

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