Abstract |
The receptor for advanced glycation end products (RAGE) has been reported to have a pivotal role in the pathogenesis of Alzheimer's disease (AD). This study investigated RAGE levels in the hippocampus and cortex of a triple transgenic mouse model of AD (3xTg-AD) using western blotting and immunohistochemical double-labeling to assess cellular localization. Analysis of western blots showed that there were no differences in the hippocampal and cortical RAGE levels in 10-month-old adult 3xTg-AD mice, but significant increases in RAGE expression were found in the 22- to 24-month-old aged 3xTg-AD mice compared with those of age-matched controls. RAGE-positive immunoreactivity was observed primarily in neurons of aged 3xTg-AD mice with very little labeling in non-neuronal cells, with the notable exception of RAGE presence in astrocytes in the hippocampal area CA1. In addition, RAGE signals were co-localized with the intracellular amyloid precursor protein (APP)/ amyloid beta (Aβ) but not with the extracellular APP/Aβ. In aged 3xTg-AD mice, expression of human tau was observed in the hippocampal area CA1 and co-localized with RAGE signals. The increased presence of RAGE in the 3xTg-AD animal model showing critical aspects of AD neuropathology indicates that RAGE may contribute to cellular dysfunction in the AD brain.
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Authors | Bo-Ryoung Choi, Woo-Hyun Cho, Jiyoung Kim, Hyong Joo Lee, ChiHye Chung, Won Kyung Jeon, Jung-Soo Han |
Journal | Experimental & molecular medicine
(Exp Mol Med)
Vol. 46
Pg. e75
(Feb 07 2014)
ISSN: 2092-6413 [Electronic] United States |
PMID | 24503708
(Publication Type: Journal Article, Research Support, Non-U.S. Gov't)
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Chemical References |
- Amyloid beta-Peptides
- Receptor for Advanced Glycation End Products
- Receptors, Immunologic
- tau Proteins
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Topics |
- Alzheimer Disease
(genetics, metabolism)
- Amyloid beta-Peptides
(metabolism)
- Animals
- Astrocytes
(metabolism)
- CA1 Region, Hippocampal
(growth & development, metabolism, pathology)
- Humans
- Mice
- Mice, Transgenic
- Neurons
(metabolism)
- Receptor for Advanced Glycation End Products
- Receptors, Immunologic
(genetics, metabolism)
- tau Proteins
(genetics, metabolism)
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