Evidence map›Paper›PMID 26059974›Full record

ArticleMolecular neurodegeneration2015

Identification of telomere dysfunction in Friedreich ataxia.

Sara Anjomani Virmouni, Sahar Al-Mahdawi, Chiranjeevi Sandi, Hemad Yasaei, Paola Giunti, Predrag Slijepcevic, Mark A Pook

Open access · goldAbstract read
In one paragraph

Article in Molecular neurodegeneration, 2015. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 10 papers.

0numbers the graph read from it
0cells of the map it votes in
10citing papers in PubMed
1.1field-weighted citation impact, top 23% 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

10 citing papers in PubMed, 19 citations in OpenAlex.

  1. Review
  2. Article
  3. Article
  4. A new FRDA mouse model [Frontiers in neuroscience · 2023
    Article
  5. Review
  6. Article
  7. Article
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  9. Review
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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

7 authors at 2 institutions in 1 country.

Sara Anjomani VirmouniDivision of Biosciences, Department of Life Sciences, College of Health & Life Sciences, Brunel University London, Uxbridge, UB8 3PH, UK. Sara.Anjomani-Virmouni@brunel.ac.uk.
Sahar Al-MahdawiDivision of Biosciences, Department of Life Sciences, College of Health & Life Sciences, Brunel University London, Uxbridge, UB8 3PH, UK. Sahar.Al-Mahdawi@brunel.ac.uk.
Chiranjeevi SandiDivision of Biosciences, Department of Life Sciences, College of Health & Life Sciences, Brunel University London, Uxbridge, UB8 3PH, UK. Chiranjeevi.Sandi@cruk.cam.ac.uk.
Hemad YasaeiDivision of Biosciences, Department of Life Sciences, College of Health & Life Sciences, Brunel University London, Uxbridge, UB8 3PH, UK. Hemad.Yasaei@brunel.ac.uk.
Paola GiuntiDepartment of Molecular Neuroscience, Institute of Neurology, University College London, Queen Square, London, UK. p.giunti@ucl.ac.uk.
Predrag SlijepcevicDivision of Biosciences, Department of Life Sciences, College of Health & Life Sciences, Brunel University London, Uxbridge, UB8 3PH, UK. Predrag.Slijepcevic@brunel.ac.uk.
Mark A PookDivision of Biosciences, Department of Life Sciences, College of Health & Life Sciences, Brunel University London, Uxbridge, UB8 3PH, UK. mark.pook@brunel.ac.uk.
Brunel University of London · GBNational Hospital for Neurology and Neurosurgery · GB

Funding

Wellcome Trust 089757
6 · The paper itself

Abstract

backgroundFriedreich ataxia (FRDA) is a progressive inherited neurodegenerative disorder caused by mutation of the FXN gene, resulting in decreased frataxin expression, mitochondrial dysfunction and oxidative stress. A recent study has identified shorter telomeres in FRDA patient leukocytes as a possible disease biomarker.

resultsHere we aimed to investigate both telomere structure and function in FRDA cells. Our results confirmed telomere shortening in FRDA patient leukocytes and identified similar telomere shortening in FRDA patient autopsy cerebellar tissues. However, FRDA fibroblasts showed significantly longer telomeres at early passage, occurring in the absence of telomerase activity, but with activation of an alternative lengthening of telomeres (ALT)-like mechanism. These cells also showed accelerated telomere shortening as population doubling increases. Furthermore, telomere dysfunction-induced foci (TIF) analysis revealed that FRDA fibroblasts have dysfunctional telomeres.

conclusionsOur finding of dysfunctional telomeres in FRDA cells provides further insight into FRDA molecular disease mechanisms, which may have implications for future FRDA therapy.

Indexed as

Telomere ShorteningAdolescentAdultAnimalsCell DivisionCells, CulturedCerebellumDNA DamageDNA RepairFemaleFibroblastsFriedreich AtaxiaHumansIn Situ Hybridization, FluorescenceLeukocytesMaleTelomerase

Identifiers

PMID26059974
PMCPMC4462004
OpenAlexW1606178453

What OpenQuestion holds

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Registered trials

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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.