Abstract:
:Rare individuals remain cognitively intact despite the presence of neuropathology usually associated with fully symptomatic Alzheimer's disease (AD), which we refer to as Non-Demented with Alzheimer's disease Neuropathology (NDAN). Understanding the involved mechanism(s) of their cognitive resistance may reveal novel strategies to treat AD-related dementia. In the pursuit of this goal, we determined the number of hippocampal neural stem cells (NSCs) and investigated the expression of several miRNAs in NDAN and AD subjects. Laser-capture microdissection of autopsy human hippocampus DG and qRT-PCR miRNA analyses were combined with immunofluorescence in this study. The number of SOX2(+) NSCs in the DG was significantly increased in NDAN individuals as compared to AD subjects. Further, the prevalence of SOX2(+) NSCs was found to correlate with cognitive capacity. Neurogenesis-regulating miRNAs were decreased in NDAN individuals as compared to AD patients. An increased number of NSCs and new neurons in NDAN individuals is associated with a unique expression of regulating miRNAs and strongly support a role of neurogenesis in mediating, in part, the ability of these individuals to resist the pathological burden of AD.
journal_name
Sci Repjournal_title
Scientific reportsauthors
Briley D,Ghirardi V,Woltjer R,Renck A,Zolochevska O,Taglialatela G,Micci MAdoi
10.1038/srep27812subject
Has Abstractpub_date
2016-06-14 00:00:00pages
27812issn
2045-2322pii
srep27812journal_volume
6pub_type
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