Markers of Alzheimer's Disease in Primary Visual Cortex in Normal Aging in Mice.

Abstract:

:Aging is the principal risk factor for the development of Alzheimer's disease (AD). The hallmarks of AD are accumulation of the amyloid-β peptide 1-42 (Aβ42) and abnormal hyperphosphorylation of Tau (p-Tau) protein in different areas of the brain and, more recently reported, in the visual cortex. Recently, Aβ42 peptide overproduction has been involved in visual loss. Similar to AD, in normal aging, there is a significant amyloid deposition related to the overactivation of the aforementioned mechanisms. However, the mechanisms associated with visual loss secondary to age-induced visual cortex affectation are not completely understood. Young and aged mice were used as model to analyze the presence of Aβ42, p-Tau, glial-acidic fibrillary protein (GFAP), and presenilin-2, one of the main enzymes involved in Aβ42 production. Our results show a significant increase of Aβ42 deposition in aged mice in the following cells and/or tissues: endothelial cells and blood vessels and neurons of the visual cortex; they also show an increase of the expression of GFAP and presenilin-2 in this region. These results provide a comprehensive framework for the role of Aβ42 in visual loss due to inflammation present with aging and offer some clues for fruitful avenues for the study of healthy aging.

journal_name

Biomed Res Int

authors

Hernández-Zimbrón LF,Perez-Hernández M,Torres-Romero A,Gorostieta-Salas E,Gonzalez-Salinas R,Gulias-Cañizo R,Quiroz-Mercado H,Zenteno E

doi

10.1155/2017/3706018

subject

Has Abstract

pub_date

2017-01-01 00:00:00

pages

3706018

eissn

2314-6133

issn

2314-6141

journal_volume

2017

pub_type

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