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Increased Abeta production leads to intracellular accumulation of Abeta in flotillin-1-positive endosomes


Rajendran, L; Knobloch, M; Geiger, K D; Dienel, S; Nitsch, R; Simons, K; Konietzko, U (2007). Increased Abeta production leads to intracellular accumulation of Abeta in flotillin-1-positive endosomes. Neurodegenerative Diseases, 4(2-3):164-170.

Abstract

Extracellular accumulation of Abeta in beta-amyloid plaques is thought to be associated with the neurodegeneration observed in Alzheimer's disease (AD) patients, although a lack of correlation with cognitive decline raised doubts on this hypothesis. In different transgenic mouse models Abeta accumulates inside the cells and mice develop behavioral deficits well before visible extracellular beta-amyloid accumulation. Here we show that intracellular Abeta accumulates in flotillin-1 positive endocytic vesicles. We also demonstrate that flotillin-1 is not only associated with intracellular Abeta in transgenic mice but also with extracellular beta-amyloid plaques in AD patient brain sections.

Abstract

Extracellular accumulation of Abeta in beta-amyloid plaques is thought to be associated with the neurodegeneration observed in Alzheimer's disease (AD) patients, although a lack of correlation with cognitive decline raised doubts on this hypothesis. In different transgenic mouse models Abeta accumulates inside the cells and mice develop behavioral deficits well before visible extracellular beta-amyloid accumulation. Here we show that intracellular Abeta accumulates in flotillin-1 positive endocytic vesicles. We also demonstrate that flotillin-1 is not only associated with intracellular Abeta in transgenic mice but also with extracellular beta-amyloid plaques in AD patient brain sections.

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Additional indexing

Item Type:Journal Article, refereed, original work
Communities & Collections:04 Faculty of Medicine > Institute for Regenerative Medicine (IREM)
Dewey Decimal Classification:610 Medicine & health
Language:English
Date:2007
Deposited On:06 Sep 2011 08:52
Last Modified:16 Aug 2016 10:14
Publisher:Karger
ISSN:1660-2854
Publisher DOI:https://doi.org/10.1159/000101841
PubMed ID:17596711

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