کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
5623631 1406214 2006 13 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Synaptic targeting by Aβ oligomers (ADDLS) as a basis for memory loss in early Alzheimer's disease
موضوعات مرتبط
علوم زیستی و بیوفناوری علم عصب شناسی عصب شناسی
پیش نمایش صفحه اول مقاله
Synaptic targeting by Aβ oligomers (ADDLS) as a basis for memory loss in early Alzheimer's disease
چکیده انگلیسی
Early diagnosis and treatment of Alzheimer's Disease (AD) ultimately will require identification of its pathogenic mechanism. Such a mechanism must explain the hallmark of early AD-a profound inability to form new memories. For many years, the most promising hypothesis maintained that memory failure derived from neuron death induced by insoluble deposits of amyloid fibrils. Newer findings, however, suggest that memory loss, especially in early AD, may be a failure in synaptic plasticity caused by small soluble Aβ oligomers (“ADDLs”). ADDLs are neurologically potent toxins that rapidly inhibit long-term potentiation and reversal of long-term depression, classic paradigms for learning and memory. In human samples, ADDLs show striking increases in AD brain and CSF. The ADDL hypothesis is considerably reinforced by nerve cell biology studies showing that ADDLs specifically attack synapses, essentially acting as gain-of-function pathogenic ligands. Selective damage by ADDLs to memory-linked synaptic mechanisms provides an appealing explanation for early AD memory loss and suggests that ADDLs provide a valid target for therapeutics and diagnostics.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Alzheimer's & Dementia - Volume 2, Issue 1, January 2006, Pages 43-55
نویسندگان
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