Cited by 107Genetic Neurodegenerative DiseasesMitochondrial Function and PathologyRedox biology and oxidative stress

Does oxidative stress contribute to the pathology of Friedreich's ataxia? A radical question

Armstrong, Jeffrey S., Khdour, Omar, Hecht, Sidney M.·2010·The FASEB Journal

Abstract

Friedreich's ataxia (FRDA) is a hereditary neurodegenerative disease that frequently culminates in cardiac failure at an early age. FRDA is believed to arise from reduced synthesis of the mitochondrial iron chaperone frataxin due to impaired gene transcription, which leads to mitochondrial iron accumulation, dysfunction of mitochondrial Fe‐S containing enzymes, and increased Fenton‐mediated free radical production. Recent reports have challenged this generally accepted hypothesis, by suggesting that the oxidative stress component in FRDA is minimal and thereby questioning the benefit of antioxidant therapeutic strategies. We suggest that this apparent paradox results from the radically divergent chemistries of the participating reactive oxygen species (ROS), the major cellular subcompartments involved and the overall cellular responses to ROS. In this review, we consider these factors and conclude that oxidative stress does constitute a major contributing factor to FRDA pathology. This reaffirms the idea that the rational design of specific small molecule multifunctional antioxidants will benefit FRDA patients.—Armstrong, J. S., Khdour, O., Hecht, S. M. Does oxidative stress contribute to the pathology of Friedreich's ataxia? A radical question. FASEBJ. 24, 2152–2163 (2010). www.fasebj.org

Integrity signals

Registry

Crossref · 10.1096/fj.09-143222

Cites

101 of 101 references verified0 citation errors · 0 not checkable

Statistics

Recomputing p-values needs the paper’s full text.

Claims the paper makes

This paper’s full text isn’t openly available, so its claims and self-check weren’t run. The registry and citation checks still apply.

Claims other papers make about this one

Each is checked against this paper’s own text: does it say what the citing paper says it does?

  • Hypoxia-induced suppression of Fe-S protein activity can be contrasted with the suppression of Fe-S protein activity found in Friedreich's ataxia, a hereditary neurodegenerative disease resulting from decreased production or function of frataxin.

    “In addition, the hypoxia-induced suppression of Fe-S protein activity can be contrasted with the suppression of Fe-S protein activity found in Friedreich's ataxia, a hereditary neurogenerative disease that results from decreased production/function of the frataxin protein (17, 220).”

    From Redox regulation of mitochondrial function (2012) · cites this paper as [17]

  • Increased production of mitochondrial oxidants correlates with a decrease in total GSH and in the GSH/GSSG ratio in cells with frataxin deficiency.

    “Increased production of mitochondrial oxidants was found to correlate with a decrease in both total GSH as well as a decrease in the GSH/GSSG ratio in cells with frataxin deficiency; these changes may lead to the increased accumulation of protein S-glutathiolation in this disease (17).”

    From Redox regulation of mitochondrial function (2012) · cites this paper as [17]

  • Decreased expression of frataxin increases the Fenton reaction due to excess free iron.

    “Decreased expression of frataxin also increases the Fenton reaction due to excess free iron (17, 220).”

    From Redox regulation of mitochondrial function (2012) · cites this paper as [17]

Cites

Flagged first, then by citations

Cited by

Sorted by citations

Authors
Armstrong, J. S., Khdour, O., & Hecht, S. M.
Affiliations
Arizona State University (US)
Corresponding author
Armstrong, Jeffrey S.
Venue
The FASEB Journal
Publisher
Wiley
Published
2010-03-10
Volume
24
Issue
7
Pages
2152-2163
ISSN
  • 0892-6638 (ISSN-L)
  • 1530-6860
OpenAlex
W2032253254
Cited by
107
References
101
Citations by year
2025: 1 · 2024: 1 · 2023: 4 · 2022: 2 · 2021: 3 · 2020: 8 · 2019: 6 · 2018: 11 · 2017: 5 · 2016: 6 · 2015: 4 · 2014: 11 · 2013: 13 · 2012: 16
FWCI
1.30
Type
journal article
Language
en
Open access
closed
Locations
  • The FASEB Journal (publishedVersion)
  • PubMed (publishedVersion)
Topics
  • Life Sciences › Neuroscience › Cellular and Molecular Neuroscience › Genetic Neurodegenerative Diseases
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Mitochondrial Function and Pathology
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Redox biology and oxidative stress
Keywords
Friedreich's ataxia, oxidative stress, frataxin, mitochondrial iron accumulation, reactive oxygen species, Fenton reaction, antioxidant therapy, neurodegeneration, heart failure, gene transcription
MeSH terms
Frataxin, Energy Metabolism, Friedreich Ataxia, Humans, Iron-Sulfur Proteins, Oxidation-Reduction, Oxidative Stress, Iron-Binding Proteins

About these checks

Registry, retraction, Cites and statistics results are computed, not judged, with one exception: a printed reference that no index lists is read once by a model before it counts as a citation error. Claims are extracted by a model and kept only when their quote appears verbatim in the text; each cited source is then checked, with a model’s help, for whether it says what the claim relies on. Those verdicts can be wrong — read the claim’s quote and the cited source before relying on one.

Statistics and arithmetic are recomputed, not judged.

Confidence bands are shown only for fields calibrated on our annotated test set. None is calibrated yet, so no band is shown.

What counts as a claim ›How we measure confidence ›How we check this ›

Are you an author, or do you see a problem with this page? Request a review