Cited by 26Alzheimer's disease research and treatmentsAntioxidant Activity and Oxidative StressFatty Acid Research and Health

Amyloid plaque-associated oxidative degradation of uniformly radiolabeled arachidonic acid

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Furman, Ran, Murray, Ian V. J., Schall, Hayley E., Liu, Qiwei, Ghiwot, Yonatan, Axelsen, Paul H.·2016·ACS Chemical Neuroscience

Abstract

Oxidative stress is a frequently observed feature of Alzheimer's disease, but its pathological significance is not understood. To explore the relationship between oxidative stress and amyloid plaques, uniformly radiolabeled arachidonate was introduced into transgenic mouse models of Alzheimer's disease via intracerebroventricular injection. Uniform labeling with carbon-14 is used here for the first time, and made possible meaningful quantification of arachidonate oxidative degradation products. The injected arachidonate entered a fatty acid pool that was subject to oxidative degradation in both transgenic and wild-type animals. However, the extent of its degradation was markedly greater in the hippocampus of transgenic animals where amyloid plaques were abundant. In human Alzheimer's brain, plaque-associated proteins were post-translationally modified by hydroxynonenal, a well-known oxidative degradation product of arachidonate. These results suggest that several recurring themes in Alzheimer's pathogenesis, amyloid β proteins, transition metal ions, oxidative stress, and apolipoprotein isoforms, may be involved in a common mechanism that has the potential to explain both neuronal loss and fibril formation in this disease.

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Authors
Furman, R., Murray, I. V. J., Schall, H. E., Liu, Q., Ghiwot, Y., & Axelsen, P. H.
Affiliations
  • University of Pennsylvania (US)
  • St. George's University (GD)
  • Texas A&M University (US)
Corresponding author
Axelsen, Paul H.
Venue
ACS Chemical Neuroscience
Published
2016-02-09
Volume
7
Issue
3
Pages
367-377
ISSN
1948-7193 (ISSN-L)
OpenAlex
W2255742740
Cited by
26
References
96
Citations by year
2025: 2 · 2024: 1 · 2023: 2 · 2022: 1 · 2021: 2 · 2020: 4 · 2019: 3 · 2018: 4 · 2017: 2 · 2016: 5
FWCI
3.76
Type
journal article
Language
en
Open access
Locations
  • ACS Chemical Neuroscience (publishedVersion)
  • PubMed (publishedVersion)
  • PubMed Central (acceptedVersion)
Funders
  • National Institute of Neurological Disorders and Stroke (NS74178)
  • Alzheimer's Association
  • American Health Assistance Foundation
  • Glenn Family Foundation
  • National Institute of General Medical Sciences (GM76201)
Topics
  • Health Sciences › Medicine › Physiology › Alzheimer's disease research and treatments
  • Health Sciences › Medicine › Biochemistry › Antioxidant Activity and Oxidative Stress
  • Health Sciences › Nursing › Nutrition and Dietetics › Fatty Acid Research and Health
Keywords
Alzheimer's disease, amyloid plaques, arachidonic acid, oxidative stress, 4-hydroxynonenal, carbon-14 labeling, transgenic mouse model, hippocampus, fatty acid oxidation, amyloid-beta, transition metal ions, neuronal loss, fibril formation
MeSH terms
Alzheimer Disease, Animals, Chromatography, High Pressure Liquid, Disease Models, Animal, Fluorescent Antibody Technique, Hippocampus, Humans, Mice, Transgenic, Mass Spectrometry, Amyloid beta-Peptides, Arachidonic Acid, Oxidative Stress, Mice, Plaque, Amyloid

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