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Vol. 10, No. 1-4, 2012
Issue release date: April 2012
Section title: Paper
Neurodegenerative Dis 2012;10:56–59
(DOI:10.1159/000334762)

Intraneuronal Aβ Accumulation, Amyloid Plaques, and Synapse Pathology in Alzheimer’s Disease

Capetillo-Zarate E. · Gracia L. · Tampellini D. · Gouras G.K.
aDepartment of Neurology and Neuroscience, and bThe HRH Prince Alwaleed Bin Talal Bin Abdulaziz Alsaud Institute for Computational Biomedicine, Weill Cornell Medical College, New York, N.Y., USA; cWallenberg Neuroscience Center, Department of Experimental Medical Science, Lund University, Lund, Sweden

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Article / Publication Details

First-Page Preview
Abstract of Paper

Received: 7/1/2011 4:01:58 PM
Accepted: 10/28/2011
Published online: 1/21/2012

Number of Print Pages: 4
Number of Figures: 1
Number of Tables: 0

ISSN: 1660-2854 (Print)
eISSN: 1660-2862 (Online)

For additional information: http://www.karger.com/NDD

Abstract

Background: β-Amyloid (Aβ) plaques are a pathological hallmark of Alzheimer’s disease (AD) and multiple lines of evidence have linked Aβ with AD. However, synapse loss is known as the best pathological correlate of cognitive impairment in AD, and intraneuronal Aβ accumulation has been shown to precede plaque pathology. The progression of Aβ accumulation to synapse loss and plaque formation remains incomplete. The objective is to investigate the progression of intraneuronal Aβ accumulation in the brain. Methods: To visualize and analyze the development of Aβ pathology we perform immunohistochemistry and immunofluorescence microscopy using antibodies against different Aβ conformations, synaptic proteins and structural neuronal proteins in brain tissue of AD transgenic mouse models. Results: Our results show the intraneuronal onset of Aβ42 accumulation in AD mouse brains with aging. We observe an inverse correlation of Aβ and amyloid fibrils with structural proteins within neurites. Images reveal aggregated amyloid within selective pyramidal neurons, neurites and synapses in AD transgenic mice as plaques arise. Conclusion: The data support that Aβ42 accumulation and aggregation begin within AD-vulnerable neurons in the brain. Progressive intraneuronal Aβ42 aggregation disrupts the normal cytoarchitecture of neurites.


Article / Publication Details

First-Page Preview
Abstract of Paper

Received: 7/1/2011 4:01:58 PM
Accepted: 10/28/2011
Published online: 1/21/2012

Number of Print Pages: 4
Number of Figures: 1
Number of Tables: 0

ISSN: 1660-2854 (Print)
eISSN: 1660-2862 (Online)

For additional information: http://www.karger.com/NDD


Copyright / Drug Dosage

Copyright: All rights reserved. No part of this publication may be translated into other languages, reproduced or utilized in any form or by any means, electronic or mechanical, including photocopying, recording, microcopying, or by any information storage and retrieval system, without permission in writing from the publisher or, in the case of photocopying, direct payment of a specified fee to the Copyright Clearance Center.
Drug Dosage: The authors and the publisher have exerted every effort to ensure that drug selection and dosage set forth in this text are in accord with current recommendations and practice at the time of publication. However, in view of ongoing research, changes in goverment regulations, and the constant flow of information relating to drug therapy and drug reactions, the reader is urged to check the package insert for each drug for any changes in indications and dosage and for added warnings and precautions. This is particularly important when the recommended agent is a new and/or infrequently employed drug.
Disclaimer: The statements, opinions and data contained in this publication are solely those of the individual authors and contributors and not of the publishers and the editor(s). The appearance of advertisements or/and product references in the publication is not a warranty, endorsement, or approval of the products or services advertised or of their effectiveness, quality or safety. The publisher and the editor(s) disclaim responsibility for any injury to persons or property resulting from any ideas, methods, instructions or products referred to in the content or advertisements.

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