Journal article

Oligomers, fact or artefact? SDS-PAGE induces dimerization of β-amyloid in human brain samples

AD Watt, KA Perez, A Rembach, NA Sherrat, LW Hung, T Johanssen, CA McLean, WM Kok, CA Hutton, M Fodero-Tavoletti, CL Masters, VL Villemagne, KJ Barnham

Acta Neuropathologica | Published : 2013

Abstract

The formation of low-order oligomers of β-amyloid (Aβ) within the brain is widely believed to be a central component of Alzheimer's disease (AD) pathogenesis. However, despite advances in high-throughput and high-resolution techniques such as xMAP and mass spectrometry (MS), investigations into these oligomeric species have remained reliant on low-resolution Western blots and enzyme-linked immunosorbent assays. The current investigation compared Aβ profiles within human cortical tissue using sodium dodecyl sulphate (SDS) polyacrylamide gel electrophoresis (PAGE), xMAP and surface enhanced laser desorption/ionization time-of-flight MS and found that whilst there was significant correlation ac..

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