Clin Chem:高通量质谱测定脑脊液?

2020-01-02 MedSci MedSci原创

综上所述,该检测法可用于确定与AD的存在相关的Aβ42/Aβ40比率。

脑脊液(CSF)中β-淀粉样蛋白1–42Aβ42)与Aβ40的比率可能对评估阿尔茨海默病(AD)有用,但其定量分析受到分析前分析物丢失等因素的限制。 我们开发了可限制分析物损失的LC-MS / MS分析方法。 在这里,我们描述了该分析的分析特征及其在区分AD患者与非AD痴呆和健康对照中的性能。

为了测量Aβ42/Aβ40,我们使用独特的蛋白水解衍生的C末端肽作为Aβ40Aβ42的替代标记,并通过LC-MS / MS进行了分析和定量。 该方法经过分析验证,并应用于临床诊断ADn = 102),轻度认知障碍(n = 37)和非AD痴呆症(n = 22)的个体以及健康对照组(n = 130)。 Aβ42/Aβ40值与从表型推断出的APOE基因型进行了比较,同样通过LC-MS / MS测量。

该测定的报告范围为10025000 pg / mL,定量下限为100 pg / mL,两种肽的测定内和测定间CV <15%。 Aβ42/Aβ40比率阈值<0.16临床敏感性为78%,可将AD患者与非AD痴呆患者(临床特异性为91%)和健康对照者(临床特异性为81%)区分开。 随着APOE4等位基因剂量的增加,Aβ42/Aβ40比值显著下降(P <0.001)。

综上所述,该检测法可用于确定与AD的存在相关的Aβ42/Aβ40比率。

原始出处:

Darren M. Weber, Diana Tran,High-Throughput Mass Spectrometry Assay for Quantifying β-Amyloid 40 and 42 in Cerebrospinal Fluid

本文系梅斯医学(MedSci)原创编译整理,转载需授权!


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=1969438, encodeId=6e3f19694389e, content=<a href='/topic/show?id=6532102e6059' target=_blank style='color:#2F92EE;'>#高通量#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=40, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=102760, encryptionId=6532102e6059, topicName=高通量)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=ad7f282, createdName=yang0210, createdTime=Mon Apr 20 07:51:00 CST 2020, time=2020-04-20, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1662317, encodeId=032e166231eae, content=<a href='/topic/show?id=6a426545472' target=_blank style='color:#2F92EE;'>#测定#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=39, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=65454, encryptionId=6a426545472, topicName=测定)], attachment=null, authenticateStatus=null, createdAvatar=null, createdBy=8db925396819, createdName=丁鹏鹏, createdTime=Wed Apr 29 09:51:00 CST 2020, time=2020-04-29, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=377889, encodeId=59293e78894f, content=很好的学习机会, beContent=null, objectType=article, channel=null, level=null, likeNumber=87, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=https://cdnapi.center.medsci.cn/medsci/head/2018/04/12/cd30eefc465f70dc4dad89bd57479781.jpg, createdBy=02be2318568, createdName=一天没事干, createdTime=Tue Jan 07 09:04:24 CST 2020, time=2020-01-07, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1553378, encodeId=25bb15533e827, content=<a href='/topic/show?id=81bd923e559' target=_blank style='color:#2F92EE;'>#质谱#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=45, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=92375, encryptionId=81bd923e559, topicName=质谱)], attachment=null, authenticateStatus=null, createdAvatar=null, createdBy=96fd14366106, createdName=jeanqiuqiu, createdTime=Sat Jan 04 13:51:00 CST 2020, time=2020-01-04, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=377720, encodeId=8f303e7720c2, content=谢谢了学习了, beContent=null, objectType=article, channel=null, level=null, likeNumber=83, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=null, createdBy=30331616752, createdName=txqjm, createdTime=Fri Jan 03 00:42:05 CST 2020, time=2020-01-03, status=1, ipAttribution=)]
  2. [GetPortalCommentsPageByObjectIdResponse(id=1969438, encodeId=6e3f19694389e, content=<a href='/topic/show?id=6532102e6059' target=_blank style='color:#2F92EE;'>#高通量#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=40, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=102760, encryptionId=6532102e6059, topicName=高通量)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=ad7f282, createdName=yang0210, createdTime=Mon Apr 20 07:51:00 CST 2020, time=2020-04-20, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1662317, encodeId=032e166231eae, content=<a href='/topic/show?id=6a426545472' target=_blank style='color:#2F92EE;'>#测定#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=39, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=65454, encryptionId=6a426545472, topicName=测定)], attachment=null, authenticateStatus=null, createdAvatar=null, createdBy=8db925396819, createdName=丁鹏鹏, createdTime=Wed Apr 29 09:51:00 CST 2020, time=2020-04-29, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=377889, encodeId=59293e78894f, content=很好的学习机会, beContent=null, objectType=article, channel=null, level=null, likeNumber=87, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=https://cdnapi.center.medsci.cn/medsci/head/2018/04/12/cd30eefc465f70dc4dad89bd57479781.jpg, createdBy=02be2318568, createdName=一天没事干, createdTime=Tue Jan 07 09:04:24 CST 2020, time=2020-01-07, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1553378, encodeId=25bb15533e827, content=<a href='/topic/show?id=81bd923e559' target=_blank style='color:#2F92EE;'>#质谱#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=45, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=92375, encryptionId=81bd923e559, topicName=质谱)], attachment=null, authenticateStatus=null, createdAvatar=null, createdBy=96fd14366106, createdName=jeanqiuqiu, createdTime=Sat Jan 04 13:51:00 CST 2020, time=2020-01-04, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=377720, encodeId=8f303e7720c2, content=谢谢了学习了, beContent=null, objectType=article, channel=null, level=null, likeNumber=83, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=null, createdBy=30331616752, createdName=txqjm, createdTime=Fri Jan 03 00:42:05 CST 2020, time=2020-01-03, status=1, ipAttribution=)]
    2020-04-29 丁鹏鹏
  3. [GetPortalCommentsPageByObjectIdResponse(id=1969438, encodeId=6e3f19694389e, content=<a href='/topic/show?id=6532102e6059' target=_blank style='color:#2F92EE;'>#高通量#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=40, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=102760, encryptionId=6532102e6059, topicName=高通量)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=ad7f282, createdName=yang0210, createdTime=Mon Apr 20 07:51:00 CST 2020, time=2020-04-20, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1662317, encodeId=032e166231eae, content=<a href='/topic/show?id=6a426545472' target=_blank style='color:#2F92EE;'>#测定#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=39, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=65454, encryptionId=6a426545472, topicName=测定)], attachment=null, authenticateStatus=null, createdAvatar=null, createdBy=8db925396819, createdName=丁鹏鹏, createdTime=Wed Apr 29 09:51:00 CST 2020, time=2020-04-29, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=377889, encodeId=59293e78894f, content=很好的学习机会, beContent=null, objectType=article, channel=null, level=null, likeNumber=87, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=https://cdnapi.center.medsci.cn/medsci/head/2018/04/12/cd30eefc465f70dc4dad89bd57479781.jpg, createdBy=02be2318568, createdName=一天没事干, createdTime=Tue Jan 07 09:04:24 CST 2020, time=2020-01-07, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1553378, encodeId=25bb15533e827, content=<a href='/topic/show?id=81bd923e559' target=_blank style='color:#2F92EE;'>#质谱#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=45, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=92375, encryptionId=81bd923e559, topicName=质谱)], attachment=null, authenticateStatus=null, createdAvatar=null, createdBy=96fd14366106, createdName=jeanqiuqiu, createdTime=Sat Jan 04 13:51:00 CST 2020, time=2020-01-04, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=377720, encodeId=8f303e7720c2, content=谢谢了学习了, beContent=null, objectType=article, channel=null, level=null, likeNumber=83, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=null, createdBy=30331616752, createdName=txqjm, createdTime=Fri Jan 03 00:42:05 CST 2020, time=2020-01-03, status=1, ipAttribution=)]
    2020-01-07 一天没事干

    很好的学习机会

    0

  4. [GetPortalCommentsPageByObjectIdResponse(id=1969438, encodeId=6e3f19694389e, content=<a href='/topic/show?id=6532102e6059' target=_blank style='color:#2F92EE;'>#高通量#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=40, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=102760, encryptionId=6532102e6059, topicName=高通量)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=ad7f282, createdName=yang0210, createdTime=Mon Apr 20 07:51:00 CST 2020, time=2020-04-20, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1662317, encodeId=032e166231eae, content=<a href='/topic/show?id=6a426545472' target=_blank style='color:#2F92EE;'>#测定#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=39, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=65454, encryptionId=6a426545472, topicName=测定)], attachment=null, authenticateStatus=null, createdAvatar=null, createdBy=8db925396819, createdName=丁鹏鹏, createdTime=Wed Apr 29 09:51:00 CST 2020, time=2020-04-29, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=377889, encodeId=59293e78894f, content=很好的学习机会, beContent=null, objectType=article, channel=null, level=null, likeNumber=87, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=https://cdnapi.center.medsci.cn/medsci/head/2018/04/12/cd30eefc465f70dc4dad89bd57479781.jpg, createdBy=02be2318568, createdName=一天没事干, createdTime=Tue Jan 07 09:04:24 CST 2020, time=2020-01-07, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1553378, encodeId=25bb15533e827, content=<a href='/topic/show?id=81bd923e559' target=_blank style='color:#2F92EE;'>#质谱#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=45, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=92375, encryptionId=81bd923e559, topicName=质谱)], attachment=null, authenticateStatus=null, createdAvatar=null, createdBy=96fd14366106, createdName=jeanqiuqiu, createdTime=Sat Jan 04 13:51:00 CST 2020, time=2020-01-04, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=377720, encodeId=8f303e7720c2, content=谢谢了学习了, beContent=null, objectType=article, channel=null, level=null, likeNumber=83, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=null, createdBy=30331616752, createdName=txqjm, createdTime=Fri Jan 03 00:42:05 CST 2020, time=2020-01-03, status=1, ipAttribution=)]
    2020-01-04 jeanqiuqiu
  5. [GetPortalCommentsPageByObjectIdResponse(id=1969438, encodeId=6e3f19694389e, content=<a href='/topic/show?id=6532102e6059' target=_blank style='color:#2F92EE;'>#高通量#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=40, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=102760, encryptionId=6532102e6059, topicName=高通量)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=ad7f282, createdName=yang0210, createdTime=Mon Apr 20 07:51:00 CST 2020, time=2020-04-20, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1662317, encodeId=032e166231eae, content=<a href='/topic/show?id=6a426545472' target=_blank style='color:#2F92EE;'>#测定#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=39, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=65454, encryptionId=6a426545472, topicName=测定)], attachment=null, authenticateStatus=null, createdAvatar=null, createdBy=8db925396819, createdName=丁鹏鹏, createdTime=Wed Apr 29 09:51:00 CST 2020, time=2020-04-29, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=377889, encodeId=59293e78894f, content=很好的学习机会, beContent=null, objectType=article, channel=null, level=null, likeNumber=87, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=https://cdnapi.center.medsci.cn/medsci/head/2018/04/12/cd30eefc465f70dc4dad89bd57479781.jpg, createdBy=02be2318568, createdName=一天没事干, createdTime=Tue Jan 07 09:04:24 CST 2020, time=2020-01-07, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1553378, encodeId=25bb15533e827, content=<a href='/topic/show?id=81bd923e559' target=_blank style='color:#2F92EE;'>#质谱#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=45, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=92375, encryptionId=81bd923e559, topicName=质谱)], attachment=null, authenticateStatus=null, createdAvatar=null, createdBy=96fd14366106, createdName=jeanqiuqiu, createdTime=Sat Jan 04 13:51:00 CST 2020, time=2020-01-04, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=377720, encodeId=8f303e7720c2, content=谢谢了学习了, beContent=null, objectType=article, channel=null, level=null, likeNumber=83, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=null, createdBy=30331616752, createdName=txqjm, createdTime=Fri Jan 03 00:42:05 CST 2020, time=2020-01-03, status=1, ipAttribution=)]
    2020-01-03 txqjm

    谢谢了学习了

    0

相关资讯

Nature指明大脑引流“废液”的确切路径

多年来,科学家们一直认为大脑中缺少淋巴系统,从而引发了液体、大分子和免疫细胞是如何被清除出去的问题。2015年,有两项小鼠研究证实,脑膜(保护大脑并维持其形状的覆盖物)的最外层其实存在一个传统的淋巴系统,但科学家们尚未查清脑脊液(CSF)引流的确切途径。近日发表在《Nature》上的一项研究中,来自韩国高等科学技术院的研究人员指出,在啮齿动物头骨底部有一个脑膜淋巴管的热点,专门用于引流CSF,以便

Stroke:脑脊液过滤系统治疗蛛网膜下腔出血

动脉瘤蛛网膜下腔出血(Aneurysmal subarachnoid hemorrhage,aSAH)是一种脑动脉瘤破裂引起的灾难性疾病。在美国,每年3万例患者,全世界估计发生率介于4.2-22.7/10万。患者平均住院14天,以便监测二级并发症比如脑积水和迟发性脑缺血。

Sci transl med:MS4A基因调控TREM2的表达,影响AD发病风险

既往研究表明,脑脊液(CSF)可溶性髓样细胞触发受体2(sTREM2)与阿尔兹海默症(AD)相关;TREM2突变与AD风险有关,在AD进展过程中,CSF中的sTREM2的浓度不断变化。TREM2在小胶质细胞的活化、存活和吞噬过程中起着关键作用;但,sTREM2在AD中的病理生理作用尚不明确。研究人员进行了一项全基因组关联研究(GWAS),以鉴定来源于阿尔茨海默病神经成像计划的CSF sTREM2的

JAMA Neurol:脑脊液神经丝轻蛋白与神经系统疾病诊断

CNFL作为神经轴索损伤的生物标志物对中枢神经系统疾病的诊断具有一定的价值

CLIN CHEM LAB MED:脑脊液中游离的轻链

自由轻链(FLC)被认为是炎症性中枢神经系统(CNS)疾病患者脑脊液(CSF)的诊断性生物标志物。然而,尚未明确应该使用哪种方法来测定鞘内FLC的合成。本研究的目的是比较脑脊液FLC浓度、FLC系数(QFLC)、FLC指数和FLC鞘内分数(FLCIF)的诊断效能。

Clinica Chimica Acta:脑脊液中游离轻链的诊断相关性

在许多研究中,脑脊液中游离轻链型kappa (FLC-K)与寡克隆IgG比较,用于敏感检测脑中的免疫反应。然而,关于CSF数据解释尚缺乏共识,无法得出可靠的结论。这也许可以通过CSF/血清商数图中基于理论的双曲线参考范围来解决。