Evidence map›Paper›PMID 26169582›Full record

ArticleScientific reports2015

Mitochondrial oxidative stress promotes atrial fibrillation.

Wenjun Xie, Gaetano Santulli, Steven R Reiken, Qi Yuan, Brent W Osborne, Bi-Xing Chen, Andrew R Marks

Open access · goldAbstract read
In one paragraph

Article in Scientific reports, 2015. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 198 papers, 3 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
198citing papers in PubMed, 3 pooled it
17.4field-weighted citation impact, top 1% 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

198 citing papers in PubMed, 3 syntheses or guidelines pooled it, 296 citations in OpenAlex.

  1. Pooled it
  2. Pooled it
  3. Pooled it
  4. Trial
  5. A Computational Model of Oxidative Stress in a Human Ventricular Myocyte.bioRxiv : the preprint server for biology · 2026
    Article
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  7. Small-conductance CaThe Journal of physiology · 2026
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  16. Pathogenesis of Oxidative Stress Biomarkers in Atrial Fibrillation: A Narrative Review.The Journal of innovations in cardiac rhythm management · 2026
    Review
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  18. Article
  19. Review
  20. Article

138 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

7 authors at 3 institutions in 2 countries.

Wenjun XieDepartment of Physiology and Cellular Biophysics, The Wu Center for Molecular Cardiology, and.
Gaetano SantulliDepartment of Physiology and Cellular Biophysics, The Wu Center for Molecular Cardiology, and.
Steven R ReikenDepartment of Physiology and Cellular Biophysics, The Wu Center for Molecular Cardiology, and.
Qi YuanDepartment of Physiology and Cellular Biophysics, The Wu Center for Molecular Cardiology, and.
Brent W OsborneDepartment of Physiology and Cellular Biophysics, The Wu Center for Molecular Cardiology, and.
Bi-Xing ChenDepartment of Physiology and Cellular Biophysics, The Wu Center for Molecular Cardiology, and.
Andrew R Marks1] Department of Physiology and Cellular Biophysics, The Wu Center for Molecular Cardiology, and [2] Department of Medicine, College of Physicians and Surgeons of Columbia University Medical Center, New York, NY, USA.
Institute of Molecular Biology and Biophysics · RUCellular Research (United States) · USColumbia University Irving Medical Center · US

Funding

MOLECULAR BASIS OF HEART FAILURER01HL061503 · NHLBI · COLUMBIA UNIVERSITY HEALTH SCIENCES · PI MARKS, ANDREW ROBERT · 1998 to 2016
$6.5M
ANESTHESIOLOGY RESEARCH TRAININGT32GM008464 · NIGMS · COLUMBIA UNIV NEW YORK MORNINGSIDE · PI CHARLES W EMALA, May Hua · 1992 to 2026
$6.0M
Novel Therapeutic Approaches to Atrial Fibrillation Targeting Intracellular CalciR01HL102040 · NHLBI · COLUMBIA UNIVERSITY HEALTH SCIENCES · PI MARKS, ANDREW ROBERT · 2011 to 2014
$1.6M
NHLBI NIH HHS R01 HL061503NHLBI NIH HHS R01HL061503NHLBI NIH HHS R01 HL102040NHLBI NIH HHS R01HL102040NIGMS NIH HHS GM008464NIGMS NIH HHS T32 GM008464
6 · The paper itself

Abstract

Oxidative stress has been suggested to play a role in the pathogenesis of atrial fibrillation (AF). Indeed, the prevalence of AF increases with age as does oxidative stress. However, the mechanisms linking redox state to AF are not well understood. In this study we identify a link between oxidative stress and aberrant intracellular Ca(2+) release via the type 2 ryanodine receptor (RyR2) that promotes AF. We show that RyR2 are oxidized in the atria of patients with chronic AF compared with individuals in sinus rhythm. To dissect the molecular mechanism linking RyR2 oxidation to AF we used two murine models harboring RyR2 mutations that cause intracellular Ca(2+) leak. Mice with intracellular Ca(2+) leak exhibited increased atrial RyR2 oxidation, mitochondrial dysfunction, reactive oxygen species (ROS) production and AF susceptibility. Both genetic inhibition of mitochondrial ROS production and pharmacological treatment of RyR2 leakage prevented AF. Collectively, our results indicate that alterations of RyR2 and mitochondrial ROS generation form a vicious cycle in the development of AF. Targeting this previously unrecognized mechanism could be useful in developing effective interventions to prevent and treat AF.

Indexed as

Oxidative StressAge FactorsAnimalsAtrial FibrillationCalciumDisease Models, AnimalDisease SusceptibilityHeart AtriaHumansMiceMice, TransgenicMitochondria, HeartMyocytes, CardiacReactive Oxygen SpeciesRyanodine Receptor Calcium Release ChannelThiazepinesCalciumReactive Oxygen SpeciesRyanodine Receptor Calcium Release ChannelS-107 compoundThiazepines

Identifiers

PMID26169582
PMCPMC4501003
OpenAlexW2109805614

What OpenQuestion holds

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LicenceCC BY
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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.