Journal
ELECTROCHEMISTRY COMMUNICATIONS
Volume 10, Issue 11, Pages 1797-1800Publisher
ELSEVIER SCIENCE INC
DOI: 10.1016/j.elecom.2008.09.020
Keywords
A beta aggregation; Metal; Electrochemistry; Tyrosine
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Funding
- NSFC
- Chinese Academy of Sciences and Jilin Province
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Amyloid beta peptide plays a critical role in the pathogenesis of Alzheimer's disease (AD). Metal ions are highly enriched in cerebral amyloid deposits in AD and are proposed to be able to mediate A beta conformation. Therefore, a rapid, low-cost, and sensitive detection of metal-induced A beta aggregation and their relation to AD is clearly needed for the clinical diagnosis and treatment. In this report, we study metal-induced A beta aggregation by a rapid, label-free electrochemical method and monitor both the aggregation kinetics and the morphology in the absence or presence of Zn (II) and Cu (II). Different electrochemical behaviors of A beta in the absence or presence of metal ions have been observed both in the aggregation kinetics and final aggregates. Our results provide new insights into the application of the rapid, low-cost and sensitive electrochemical device for clinical diagnosis of metal effects on AD or other neurodegenerative diseases which are related to protein misfolding. (c) 2008 Elsevier B.V. All rights reserved.
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