Cited by 735Alzheimer's disease research and treatmentsDementia and Cognitive Impairment ResearchRedox biology and oxidative stress

Review: Alzheimer's Amyloid β-Peptide-Associated Free Radical Oxidative Stress and Neurotoxicity

Varadarajan, Sridhar, Yatin, Servet, Aksenova, Marina, Butterfield, D.Allan·2000·Journal of Structural Biology

Abstract

Alzheimer's disease, the major dementing disorder of the elderly that affects over 4 million Americans, is related to amyloid beta-peptide, the principal component of senile plaques in Alzheimer's disease brain. Oxidative stress, manifested by protein oxidation and lipid peroxidation, among other alterations, is a characteristic of Alzheimer's disease brain. Our laboratory united these two observations in a model to account for neurodegeneration in Alzheimer's disease brain, the amyloid beta-peptide-associated oxidative stress model for neurotoxicity in Alzheimer's disease. Under this model, the aggregated peptide, perhaps in concert with bound redox metal ions, initiates free radical processes resulting in protein oxidation, lipid peroxidation, reactive oxygen species formation, cellular dysfunction leading to calcium ion accumulation, and subsequent neuronal death. Free radical antioxidants abrogate these findings. This review outlines the substantial evidence from multiidisciplinary approaches for amyloid beta-peptide-associated free radical oxidative stress and neurotoxicity and protection against these oxidative processes and cell death by free radical scavengers. In addition, we review the strong evidence supporting the notion that the single methionine residue of amyloid beta-peptide is vital to the oxidative stress and neurotoxicological properties of this peptide. Further, we discuss studies that support the hypothesis that aggregated soluble amyloid beta-peptide and not fibrils per se are necessary for oxidative stress and neurotoxicity associated with amyloid beta-peptide.

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Crossref · 10.1006/jsbi.2000.4274

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Authors
Varadarajan, S., Yatin, S., Aksenova, M., & Butterfield, D. A.
Affiliations
University of Kentucky (US)
Corresponding author
Butterfield, D.Allan
Venue
Journal of Structural Biology
Publisher
Elsevier BV
Published
2000-06
Volume
130
Issue
2-3
Pages
184-208
ISSN
1047-8477 (ISSN-L)
OpenAlex
W2008649582
Cited by
735
References
254
Citations by year
2026: 5 · 2025: 15 · 2024: 22 · 2023: 19 · 2022: 19 · 2021: 25 · 2020: 29 · 2019: 30 · 2018: 28 · 2017: 16 · 2016: 22 · 2015: 21 · 2014: 28 · 2013: 30 · 2012: 30
FWCI
5.15
Type
journal article
Language
en
Open access
closed
Locations
  • Journal of Structural Biology (publishedVersion)
  • PubMed (publishedVersion)
Funders
National Institute on Aging (P01AG010836, P01AG005119, AG 12435, AG 10836, AG0 5119, P01AG012435)
Topics
  • Health Sciences › Medicine › Physiology › Alzheimer's disease research and treatments
  • Health Sciences › Medicine › Psychiatry and Mental health › Dementia and Cognitive Impairment Research
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Redox biology and oxidative stress
Keywords
Alzheimer's disease, amyloid-beta, oxidative stress, free radicals, neurotoxicity, protein oxidation, lipid peroxidation, reactive oxygen species, calcium accumulation, neuronal cell death, methionine residues, amyloid plaques
MeSH terms
Alzheimer Disease, Free Radicals, Humans, Neurons, Amyloid beta-Peptides, Oxidative Stress

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