Impaired regulation of synaptic actin cytoskeleton in Alzheimer's disease.

Impaired regulation of synaptic actin cytoskeleton in Alzheimer's disease.
复制标题

DOI:
10.1016/j.brainresrev.2011.01.003
复制
发表时间:
2011-06-24
影响因子:
--
通讯作者:
Vanleeuwen JE
Vanleeuwen JE
中科院分区:
其他
文献类型:
--
作者:
Penzes P;Vanleeuwen JE

文献摘要

参考文献

被引文献

相似文献

阿尔茨海默病(AD)是痴呆症最常见的原因,对我们社会的神经和经济健康产生了巨大影响。AD是一种使人衰弱的神经退行性疾病,其产生显著的认知下降。在过去十年中积累的大量证据表明,β-淀粉样蛋白(Aβ)的可溶性寡聚体通过干扰突触功效在疾病过程的早期介导AD病理学中具有关键作用。在这里,我们批判性地回顾了最近的研究,涉及突触作为AD早期发病机制的关键部位。大脑中的大多数兴奋性突触依赖于树突棘作为兴奋性神经传递的位点。树突棘的结构和功能是由肌动蛋白细胞骨架上的细胞通路动态调节的。大量的研究分析人类死后组织,动物模型和细胞范例表明,AD病理学对肌动蛋白细胞骨架稳定性的途径具有有害影响。基于现有的证据,我们提出了这样的想法,即早期AD中突触病理学的一个促成因素是Aβ寡聚体引发的棘中“突触安全网”的崩溃,导致树突棘变性和突触功能障碍。因此,脊柱稳定途径可能代表对抗AD病理学的有效治疗靶点。
Representing the most common cause of dementia, Alzheimer’s disease (AD) has dramatically impacted the neurological and economic health of our society. AD is a debilitating neurodegenerative disease that produces marked cognitive decline. Much evidence has accumulated over the past decade to suggest soluble oligomers of beta-amyloid (Aβ) have a critical role in mediating AD pathology early in the disease process by perturbing synaptic efficacy. Here we critically review recent research that implicates synapses as key sites of early pathogenesis in AD. Most excitatory synapses in the brain rely on dendritic spines as the sites for excitatory neurotransmission. The structure and function of dendritic spines are dynamically regulated by cellular pathways acting on the actin cytoskeleton. Numerous studies analyzing human postmortem tissue, animal models and cellular paradigms indicate that AD pathology has a deleterious effect on the pathways governing actin cytoskeleton stability. Based on the available evidence, we propose the idea that a contributing factor to synaptic pathology in early AD is an Aβ oligomer-initiated collapse of a “synaptic safety net” in spines, leading to dendritic spine degeneration and synaptic dysfunction. Spine stabilizing pathways may thus represent efficacious therapeutic targets for combating AD pathology.
DOI: 10.1196/annals.1379.003
发表时间: 2007-01-01
期刊: IMAGING AND THE AGING BRAIN
影响因子: --
作者:
Grutzendler, Jaime;Helmin, Kathryn;Gan, Wen-Biao
通讯作者: Gan, Wen-Biao
DOI: 10.1073/pnas.0600948103
发表时间: 2006-03-28
影响因子: 11.1
作者:
Jacobsen, JS;Wu, CC;Bloom, FE
通讯作者: Bloom, FE
DOI: 10.1016/j.neuron.2010.04.031
发表时间: 2010-06-10
期刊: NEURON
影响因子: 16.2
作者:
Ashe, Karen H.;Zahs, Kathleen R.
通讯作者: Zahs, Kathleen R.
DOI: 10.1073/pnas.0904636106
发表时间: 2009-08-04
影响因子: 11.1
作者:
Cahill, Michael E.;Xie, Zhong;Penzes, Peter
通讯作者: Penzes, Peter
DOI: 10.1002/ana.410270502
发表时间: 1990-05-01
影响因子: 11.2
作者:
DEKOSKY, ST;SCHEFF, SW
通讯作者: SCHEFF, SW