Evidence map›Paper›PMID 20090835›Full record

Trial reportPLoS genetics2010

Altered gene expression and DNA damage in peripheral blood cells from Friedreich's ataxia patients: cellular model of pathology.

Astrid C Haugen, Nicholas A Di Prospero, Joel S Parker, Rick D Fannin, Jeff Chou, Joel N Meyer, Christopher Halweg, Jennifer B Collins, Alexandra Durr, Kenneth Fischbeck and 1 more

Open access · goldAbstract readClinical Trial
In one paragraph

Trial report in PLoS genetics, 2010. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 79 papers.

0numbers the graph read from it
0cells of the map it votes in
79citing papers in PubMed
3.2field-weighted citation impact, top 7% of its field
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

79 citing papers in PubMed, 104 citations in OpenAlex.

  1. Article
  2. Article
  3. Article
  4. Article
  5. Article
  6. Article
  7. Review
  8. Review
  9. Article
  10. Skeletal Muscle Involvement in Friedreich Ataxia.International journal of molecular sciences · 2024
    Review
  11. Article
  12. Review
  13. Article
  14. Observational
  15. Review
  16. Review
  17. Article
  18. Article
  19. Drug Repositioning in Friedreich Ataxia.Frontiers in neuroscience · 2022
    Review
  20. Article

19 more citing papers are in PubMed but not listed here.

4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

11 authors at 5 institutions in 2 countries.

Astrid C HaugenLaboratory of Molecular Genetics, National Institute of Environmental Health Sciences, Research Triangle Park, North Carolina, USA.
Nicholas A Di Prospero
Joel S Parker
Rick D Fannin
Jeff Chou
Joel N Meyer
Christopher Halweg
Jennifer B Collins
Alexandra Durr
Kenneth Fischbeck
Bennett Van Houten
National Institute of Environmental Health Sciences · USNational Institute of Neurological Disorders and Stroke · USDuke University · USPitié-Salpêtrière Hospital · FRUPMC Hillman Cancer Center · US

Funding

Studies of Hereditary Neurological Disease: Disease MechanismsZIANS003038 · NINDS · NATIONAL INSTITUTE OF NEUROLOGICAL DISORDERS AND STROKE · PI FISCHBECK, KENNETH · 2009 to 2023
$19.5M
Studies Of Hereditary Neurological Disease: Clinical TrialsZIANS003037 · NINDS · NATIONAL INSTITUTE OF NEUROLOGICAL DISORDERS AND STROKE · PI FISCHBECK, KENNETH · 2009 to 2023
$9.6M
Intramural NIH HHS
6 · The paper itself

Abstract

The neurodegenerative disease Friedreich's ataxia (FRDA) is the most common autosomal-recessively inherited ataxia and is caused by a GAA triplet repeat expansion in the first intron of the frataxin gene. In this disease, transcription of frataxin, a mitochondrial protein involved in iron homeostasis, is impaired, resulting in a significant reduction in mRNA and protein levels. Global gene expression analysis was performed in peripheral blood samples from FRDA patients as compared to controls, which suggested altered expression patterns pertaining to genotoxic stress. We then confirmed the presence of genotoxic DNA damage by using a gene-specific quantitative PCR assay and discovered an increase in both mitochondrial and nuclear DNA damage in the blood of these patients (p<0.0001, respectively). Additionally, frataxin mRNA levels correlated with age of onset of disease and displayed unique sets of gene alterations involved in immune response, oxidative phosphorylation, and protein synthesis. Many of the key pathways observed by transcription profiling were downregulated, and we believe these data suggest that patients with prolonged frataxin deficiency undergo a systemic survival response to chronic genotoxic stress and consequent DNA damage detectable in blood. In conclusion, our results yield insight into the nature and progression of FRDA, as well as possible therapeutic approaches. Furthermore, the identification of potential biomarkers, including the DNA damage found in peripheral blood, may have predictive value in future clinical trials.

Indexed as

DNA DamageGene ExpressionAdolescentAdultCells, CulturedChildCohort StudiesFemaleFrataxinFriedreich AtaxiaHumansIron-Binding ProteinsMaleMiddle AgedRNAYoung AdultFrataxinIron-Binding ProteinsRNA

Identifiers

PMID20090835
PMCPMC2799513
OpenAlexW2135272501

What OpenQuestion holds

Textmetadata
LicenceCC0
Read underepoch 390

Registered trials

None linked

Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.