Synaptic pathology in Alzheimer's disease: a review of ultrastructural studies

被引:318
作者
Scheff, SW [1 ]
Price, DA [1 ]
机构
[1] Univ Kentucky, Coll Med, Sanders Brown Ctr Aging, Lexington, KY 40536 USA
关键词
Alzheimer's disease; aging; synapses; synaptophysin; neurodegeneration; cognitive ability; association cortex; HUMAN FRONTAL-CORTEX; POSTERIOR CINGULATE CORTEX; CORONARY-ARTERY-DISEASE; QUANTITATIVE ASSESSMENT; HIPPOCAMPAL-FORMATION; ENTORHINAL CORTEX; CEREBRAL-CORTEX; DENTATE GYRUS; PERFORANT PATHWAY; SENILE DEMENTIA;
D O I
10.1016/j.neurobiolaging.2003.08.002
中图分类号
R592 [老年病学]; C [社会科学总论];
学科分类号
03 ; 0303 ; 100203 ;
摘要
Morphologic studies of the neuropathology in Alzheimer's disease (AD) have demonstrated significant loss of synaptic connectivity in many regions of the neocortex and hippocampus. The strongest correlation with cognitive decline in AD is with the synaptic density. This article discusses the ultrastructural studies that have documented changes in synaptic numbers in many areas of association cortex and in the hippocampal dentate gyrus molecular layer. Changes in the synaptic complex are discussed as a possible compensatory mechanism in response to synapse loss and a model is proposed to help relate the significance of these synaptic changes. Comparisons are made between results observed with ultrastructural technique and those utilizing immumohistochemistry to assess changes in synaptic pathology. Possible reasons underlying the synaptic neuropathology are discussed. (C) 2003 Elsevier Inc. All rights reserved.
引用
收藏
页码:1029 / 1046
页数:18
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