Cited by 120Alzheimer's disease research and treatmentsBiochemical Acid Research StudiesAntioxidant Activity and Oxidative Stress

Oxidative modification of lipoic acid by HNE in Alzheimer disease brain

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Hardas, Sarita S., Sultana, Rukhsana, Clark, Amy M., Beckett, Tina L., Szweda, Luke I., Murphy, M. Paul, Butterfield, D. Allan·2013·Redox Biology

Abstract

Alzheimer disease (AD) is an age-related neurodegenerative disease characterized by the presence of three pathological hallmarks: synapse loss, extracellular senile plaques (SP) and intracellular neurofibrillary tangles (NFTs). The major component of SP is amyloid β-peptide (Aβ), which has been shown to induce oxidative stress. The AD brain shows increased levels of lipid peroxidation products, including 4-hydroxy-2-nonenal (HNE). HNE can react covalently with Cys, His, or Lys residues on proteins, altering structure and function of the latter. In the present study we measured the levels of the HNE-modified lipoic acid in brain of subjects with AD and age-matched controls. Lipoic acid is a key co-factor for a number of proteins including pyruvate dehydrogenase and α-ketoglutarate dehydrogenase, key complexes for cellular energetics. We observed a significant decrease in the levels of HNE-lipoic acid in the AD brain compared to that of age-matched controls. To investigate this phenomenon further, the levels and activity of lipoamide dehydrogenase (LADH) were measured in AD and control brains. Additionally, LADH activities were measured after in-vitro HNE-treatment to mice brains. Both LADH levels and activities were found to be significantly reduced in AD brain compared to age-matched control. HNE-treatment also reduced the LADH activity in mice brain. These data are consistent with a two-hit hypothesis of AD: oxidative stress leads to lipid peroxidation that, in turn, causes oxidative dysfunction of key energy-related complexes in mitochondria, triggering neurodegeneration. This study is consonant with the notion that lipoic acid supplementation could be a potential treatment for the observed loss of cellular energetics in AD and potentiate the antioxidant defense system to prevent or delay the oxidative stress in and progression of this devastating dementing disorder.

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Crossref · 10.1016/j.redox.2013.01.002

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  • OH-mediated allylic hydrogen atom abstraction from unsaturated lipid acyl chains initiates lipid peroxidation, leading to highly reactive nucleophilic unsaturated aldehydes such as 4-hydroxynonenal.

    “while OH-mediated allylic hydrogen atom abstraction from unsaturated lipid acyl chains initiates the processes of lipid peroxidation, leading to highly reactive nucleophilic unsaturated aldehydes such as 4-hydroxynonenal (HNE) (Figure 2A) [8,13,25,26,27].”

    From Mitochondrial Oxidative and Nitrosative Stress and Alzheimer Disease (2020) · cites this paper as [27]

    The Introduction (page not provided) identifies HNE as a product of lipid peroxidation. It does not describe OH-mediated allylic hydrogen abstraction as the initiating step. It also describes HNE as depleting nucleophilic compounds, rather than calling HNE a nucleophilic aldehyde. (LLM, conf=0.86)

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Research works printed but not linked: 2

  1. [18]Butterfield D.A. Stadtman E.R. Protein Oxidation Processes in Aging Brain Paula S.T. Bittar E.E. Advances in Cell Aging and Gerontology 1997 Elsevier 161 191
  2. [63]Behl C. Moosmann B. Antioxidant neuroprotection in Alzheimer's disease as preventive and therapeutic approach Free Radical Biology and Medicine 33 2 2002 182 191 12106814

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Authors
Hardas, S. S., Sultana, R., Clark, A. M., Beckett, T. L., Szweda, L. I., Murphy, M. P., & Butterfield, D. A.
Affiliations
  • University of Kentucky (US)
  • Case Western Reserve University (US)
Corresponding author
Butterfield, D. Allan
Venue
Redox Biology
Publisher
Elsevier BV
Published
2013
Volume
1
Issue
1
Pages
80-85
ISSN
2213-2317 (ISSN-L)
OpenAlex
W2039562082
Cited by
120
References
74
Citations by year
2026: 1 · 2025: 2 · 2024: 9 · 2023: 6 · 2022: 5 · 2021: 16 · 2020: 13 · 2019: 9 · 2018: 7 · 2017: 10 · 2016: 12 · 2015: 11 · 2014: 18 · 2013: 1
FWCI
9.75
Type
journal article
Language
en
Open access
Locations
  • Redox Biology (publishedVersion, cc-by-nc-nd)
  • Europe PMC (PubMed Central) (publishedVersion)
  • PubMed Central (publishedVersion)
  • PubMed (publishedVersion)
  • UKnowledge (University of Kentucky) (submittedVersion, cc-by)
  • DOAJ (DOAJ: Directory of Open Access Journals) (submittedVersion)
Funders
NIH (AG-05119)
Topics
  • Health Sciences › Medicine › Physiology › Alzheimer's disease research and treatments
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Biochemistry › Biochemical Acid Research Studies
  • Health Sciences › Medicine › Biochemistry › Antioxidant Activity and Oxidative Stress
Keywords
Alzheimer's disease, alpha-lipoic acid, 4-hydroxynonenal, lipid peroxidation, oxidative stress, lipoamide dehydrogenase, protein modification, mitochondrial bioenergetics, pyruvate dehydrogenase, alpha-ketoglutarate dehydrogenase, two-hit hypothesis, neurodegeneration
MeSH terms
Aldehydes, Alzheimer Disease, Animals, Brain, Humans, Dihydrolipoamide Dehydrogenase, Thioctic Acid, Male, Mice, Inbred C57BL, Case-Control Studies, Oxidative Stress, Mice

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