Evidence map›Paper›PMID 33319746›Full record

ArticleeLife2020

Reduction of elevated proton leak rejuvenates mitochondria in the aged cardiomyocyte.

Huiliang Zhang, Nathan N Alder, Wang Wang, Hazel Szeto, David J Marcinek, Peter S Rabinovitch

Open access · goldAbstract readComparative Study
In one paragraph

Article in eLife, 2020. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 71 papers.

0numbers the graph read from it
0cells of the map it votes in
71citing papers in PubMed
4.6field-weighted citation impact, top 4% 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

71 citing papers in PubMed, 103 citations in OpenAlex.

  1. Article
  2. Article
  3. Multicellular senescence programs in the aged heart.Journal of molecular and cellular cardiology plus · 2026
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  17. Contemporary insights into elamipretide's mitochondrial mechanism of action and therapeutic effects.Biomedicine & pharmacotherapy = Biomedecine & pharmacotherapie · 2025
    Review
  18. Article
  19. Review
  20. Article

11 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

6 authors at 2 institutions in 1 country.

Huiliang ZhangDepartment of Laboratory Medicine and Pathology, University of Washington, Seattle, United States.ORCID 0000-0002-8967-1219
Nathan N AlderDepartment of Molecular and Cell Biology, University of Connecticut, Storrs, United States.
Wang WangDepartment of Laboratory Medicine and Pathology, University of Washington, Seattle, United States.
Hazel SzetoSocial Profit Network Research Lab, Alexandria LaunchLabs, New York, United States.
David J MarcinekDepartment of Radiology, University of Washington, Seattle, United States.
Peter S RabinovitchDepartment of Laboratory Medicine and Pathology, University of Washington, Seattle, United States.ORCID 0000-0001-7169-3543
University of Washington · USUniversity of Connecticut · US

Funding

SPECIFICITY OF OXYGEN DNA DAMAGE AND MUTAGENESISP01AG001751 · NIA · UNIVERSITY OF WASHINGTON · PI PRUSKY, GLEN THOMAS · 1985 to 2021
$29.6M
University of Washington Nathan Shock Center of Excellence in the Basic Biology of AgingP30AG013280 · NIA · UNIVERSITY OF WASHINGTON · PI Michael MacCoss · 1995 to 2026
$27.1M
Dynamin-Related Protein Drp1 Regulates Cardiac Excitation-Contraction-Bioenergetics CouplingR01HL137266 · NHLBI · THOMAS JEFFERSON UNIVERSITY · PI SHEU, SHEY-SHING, WANG, WANG · 2018 to 2021
$2.5M
Mitochondrial Respiration and Superoxide Production in Healthy and Failing HeartR01HL114760 · NHLBI · UNIVERSITY OF WASHINGTON · PI WANG, WANG · 2012 to 2016
$2.1M
Preventing Skeletal and Cardiac Muscle Aging by Restoring Mitochondrial FunctionR56AG055114 · NIA · UNIVERSITY OF WASHINGTON · PI MARCINEK, DAVID J., RABINOVITCH, PETER S · 2017 to 2017
$820k
American Heart Association-American Stroke Association 18EIA33900041American Heart Association-American Stroke Association 19CDA34660311NHLBI NIH HHS HL114760NHLBI NIH HHS HL137266NHLBI NIH HHS R01 HL114760NHLBI NIH HHS R01 HL137266NIA NIH HHS P01 AG001751NIA NIH HHS P30 AG013280NIA NIH HHS R56 AG055114
6 · The paper itself

Abstract

Aging-associated diseases, including cardiac dysfunction, are increasingly common in the population. However, the mechanisms of physiologic aging in general, and cardiac aging in particular, remain poorly understood. Age-related heart impairment is lacking a clinically effective treatment. Using the model of naturally aging mice and rats, we show direct evidence of increased proton leak in the aged heart mitochondria. Moreover, our data suggested ANT1 as the most likely site of mediating increased mitochondrial proton permeability in old cardiomyocytes. Most importantly, the tetra-peptide SS-31 prevents age-related excess proton entry, decreases the mitochondrial flash activity and mitochondrial permeability transition pore opening, rejuvenates mitochondrial function by direct association with ANT1 and the mitochondrial ATP synthasome, and leads to substantial reversal of diastolic dysfunction. Our results uncover the excessive proton leak as a novel mechanism of age-related cardiac dysfunction and elucidate how SS-31 can reverse this clinically important complication of cardiac aging.

Indexed as

Cellular SenescenceAdenine Nucleotide Translocator 1Adenosine TriphosphateAge FactorsAgingAnimalsCells, CulturedEnergy MetabolismHydrogen-Ion ConcentrationMembrane PotentialsMice, Inbred C57BLMice, TransgenicMitochondria, HeartMitochondrial Permeability Transition PoreMyocytes, CardiacOligopeptidesAdenine Nucleotide Translocator 1Adenosine Triphosphatearginyl-2,'6'-dimethyltyrosyl-lysyl-phenylalaninamideMitochondrial Permeability Transition PoreOligopeptidesProtonsReactive Oxygen Speciesagingcardiomyocytecell biologymitochondriamouseproton leakratSS-31

Identifiers

PMID33319746
PMCPMC7738186
OpenAlexW3112163874

What OpenQuestion holds

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LicenceCC BY
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.