Amyloid-beta-induced neuronal dysfunction in Alzheimer's disease: from synapses toward neural networks.
Amyloid-beta-induced neuronal dysfunction in Alzheimer's disease: from synapses toward neural networks.
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DOI:
10.1038/nn.2583
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发表时间:
2010-07
影响因子:
25
通讯作者:
Mucke, Lennart
中科院分区:
文献类型:
--
作者:
Palop, Jorge J.;Mucke, Lennart
Alzheimer's disease is the most frequent neurodegenerative disorder and the most common cause of dementia in the elderly. Diverse lines of evidence suggest that amyloid-β (Aβ) peptides have a causal role in its pathogenesis, but the underlying mechanisms remain uncertain. Here we discuss recent evidence that Aβ may be part of a mechanism controlling synaptic activity, acting as a positive regulator presynaptically and a negative regulator postsynaptically. The pathological accumulation of oligomeric Aβ assemblies depresses excitatory transmission at the synaptic level, but also triggers aberrant patterns of neuronal circuit activity and epileptiform discharges at the network level. Aβ-induced dysfunction of inhibitory interneurons likely increases synchrony among excitatory principal cells and contributes to the destabilization of neuronal networks. Strategies that block these Aβ effects may prevent cognitive decline in Alzheimer's disease. Potential obstacles and next steps toward this goal are discussed.
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DOI:
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发表时间:
2009-11-13
期刊:
Science (New York, N.Y.)
影响因子:
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