Altered ryanodine receptor expression in mild cognitive impairment and Alzheimer's disease.

Altered ryanodine receptor expression in mild cognitive impairment and Alzheimer's disease.
复制标题

DOI:
10.1016/j.neurobiolaging.2011.03.011
复制
发表时间:
2012-05
影响因子:
4.2
通讯作者:
Stutzmann GE
Stutzmann GE
中科院分区:
医学2区
文献类型:
--
作者:
Bruno AM;Huang JY;Bennett DA;Marr RA;Hastings ML;Stutzmann GE

文献摘要

参考文献

被引文献

相似文献

细胞内Ca 2+失调是阿尔茨海默病(AD)病理生理学的一个基本组成部分,最近的证据表明兰尼碱受体(RyR)参与了疾病途径。三个基因编码不同的RyR亚型,每个基因转录本产生几个选择性剪接的mRNA。这些变体赋予RyR通道不同的功能,例如改变Ca2+释放特性或亚细胞定位。尚未研究RyR亚型表达和选择性剪接的变化在AD发病机制中的潜在作用。在这里,我们比较了RyR2和RyR3亚型的mRNA水平,以及来自无认知障碍(NCI),轻度认知障碍(MCI)和AD的个体尸检样本中脆弱脑区的特定可变剪接变体。我们发现与NCI相比,MCI大脑中RyR 2转录本增加。此外,在MCI和AD脑中,与抗凋亡功能相关的RyR2剪接变体减少。这些变化在早期疾病阶段的RyR表达可能反映了发病的病理机制,导致后来的神经退行性变。
Intracellular Ca2+ dysregulation is an underlying component of Alzheimer’s disease (AD) pathophysiology, and recent evidence implicates the ryanodine receptor (RyR) in the disease pathway. Three genes code for different RyR isoforms and each gene transcript gives rise to several alternatively spliced mRNAs. These variants confer distinct functionality to the RyR channel, such as altering Ca2+ release properties or subcellular localization. Changes in RyR isoform expression and alternative splicing have not been examined for potential roles in AD pathogenesis. Here, we compare mRNA levels of the RyR2 and RyR3 isoforms as well as specific alternatively spliced variants across vulnerable brain regions from postmortem samples of individuals with no cognitive impairment (NCI), mild cognitive impairment (MCI) and AD. We find an increase in RyR2 transcripts in MCI brains compared to NCI. In addition, there is a reduction in a RyR2 splice variant, associated with an anti-apoptotic function, in MCI and AD brains. These alterations in RyR expression at early disease stages may reflect the onset of pathologic mechanisms leading to later neurodegeneration.
DOI: 10.1074/jbc.m210410200
发表时间: 2003-02-14
影响因子: 4.8
作者:
Jiang, DW;Xiao, BL;Chen, SRW
通讯作者: Chen, SRW
DOI: 10.1016/s0143416002001999
发表时间: 2002-11-01
期刊: CELL CALCIUM
影响因子: 4
作者:
Fitzjohn, SM;Collingridge, GL
通讯作者: Collingridge, GL
DOI: 10.1161/01.res.0000260804.77807.cf
发表时间: 2007-03-30
影响因子: 20.1
作者:
George, Christopher H.;Rogers, Sarah A.;Lai, F. Anthony
通讯作者: Lai, F. Anthony
DOI: 10.1523/jneurosci.1554-10.2010
发表时间: 2010-06-23
期刊: The Journal of neuroscience : the official journal of the Society for Neuroscience
影响因子: --
作者:
Zhang H;Sun S;Herreman A;De Strooper B;Bezprozvanny I
通讯作者: Bezprozvanny I
DOI: 10.1074/jbc.m606736200
发表时间: 2006-12-15
影响因子: 4.8
作者:
Supnet, Charlene;Grant, Jeff;Mayne, Michael
通讯作者: Mayne, Michael