Cited by 769Alzheimer's disease research and treatmentsTrace Elements in HealthDementia and Cognitive Impairment Research

Cu(II) Potentiation of Alzheimer Aβ Neurotoxicity

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Huang, Xudong, Cuajungco, Math P., Atwood, Craig S., Hartshorn, Mariana A., Tyndall, Joel D.A., Hanson, Graeme R., Stokes, Karen C., Leopold, Michael +12 more·1999·Journal of Biological Chemistry

Abstract

Oxidative stress markers as well as high concentrations of copper are found in the vicinity of Abeta amyloid deposits in Alzheimer's disease. The neurotoxicity of Abeta in cell culture has been linked to H(2)O(2) generation by an unknown mechanism. We now report that Cu(II) markedly potentiates the neurotoxicity exhibited by Abeta in cell culture. The potentiation of toxicity is greatest for Abeta1-42 > Abeta1-40 >> mouse/rat Abeta1-40, corresponding to their relative capacities to reduce Cu(II) to Cu(I), form H(2)O(2) in cell-free assays and to exhibit amyloid pathology. The copper complex of Abeta1-42 has a highly positive formal reduction potential ( approximately +500-550 mV versus Ag/AgCl) characteristic of strongly reducing cuproproteins. These findings suggest that certain redox active metal ions may be important in exacerbating and perhaps facilitating Abeta-mediated oxidative damage in Alzheimer's disease.

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  1. Hensley, K., Carney, J. M., Mattson, M. P., Aksenova, M., Harris, M., Wu, J. F., Floyd, R. A., and Butterfield, D. A. (1994) Proc. Natl. Acad. Sci.
  2. Dore ´, S., Kar, S., and Quirion, R. (1997) Proc. Natl. Acad. Sci. U. S. A. 94, 4772-4777

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Authors
Huang, X., Cuajungco, M. P., Atwood, C. S., Hartshorn, M. A., Tyndall, J. D. A., Hanson, G. R., Stokes, K. C., Leopold, M., Multhaup, G., Goldstein, L. E., Scarpa, R. C., Saunders, A. J., Lim, J., Moir, R. D., Glabe, C., Bowden, E. F., Masters, C. L., Fairlie, D. P., Tanzi, R. E., & Bush, A. I.
Affiliations
  • Harvard University (US)
  • The University of Queensland (AU)
  • North Carolina State University (US)
  • Heidelberg University (DE)
  • University of California, Irvine (US)
  • Mental Health Research Institute (AU)
Corresponding author
Bush, Ashley I.
Venue
Journal of Biological Chemistry
Publisher
Elsevier BV
Published
1999-12
Volume
274
Issue
52
Pages
37111-37116
ISSN
0021-9258 (ISSN-L)
OpenAlex
W2131633241
Cited by
762
References
40
Citations by year
2026: 9 · 2025: 9 · 2024: 13 · 2023: 14 · 2022: 14 · 2021: 10 · 2020: 15 · 2019: 30 · 2018: 16 · 2017: 19 · 2016: 26 · 2015: 27 · 2014: 33 · 2013: 28 · 2012: 42
FWCI
14.38
Type
journal article
Language
en
Open access
Locations
  • Journal of Biological Chemistry (publishedVersion, cc-by)
  • PubMed (publishedVersion)
Funders
  • Massachusetts General Hospital
  • Commonwealth of Massachusetts
  • National Institutes of Health
  • Medical Research Council
  • Australian Research Council
  • National Health and Medical Research Council
  • National Institute on Aging
Topics
  • Health Sciences › Medicine › Physiology › Alzheimer's disease research and treatments
  • Health Sciences › Nursing › Nutrition and Dietetics › Trace Elements in Health
  • Health Sciences › Medicine › Psychiatry and Mental health › Dementia and Cognitive Impairment Research
Keywords
Alzheimer's disease, amyloid-beta, copper(II), neurotoxicity, oxidative stress, hydrogen peroxide production, amyloid-beta 42, Aβ40, copper proteins, metal ions, redox-active metals, oxidative damage
MeSH terms
Animals, Brain, Cells, Cultured, Computer Simulation, Copper, Electron Spin Resonance Spectroscopy, Hydrogen Peroxide, Oxidation-Reduction, Amyloid beta-Peptides, Rats

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