Evidence map›Paper›PMID 26544945›Full record

ArticleCell2015

No Evidence for Cardiomyocyte Number Expansion in Preadolescent Mice.

Kanar Alkass, Joni Panula, Mattias Westman, Ting-Di Wu, Jean-Luc Guerquin-Kern, Olaf Bergmann

Abstract readComment
PubMed Publisher
In one paragraph

Article in Cell, 2015. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 156 papers.

0numbers the graph read from it
0cells of the map it votes in
156citing papers in PubMed
–field-weighted citation impact
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

156 citing papers in PubMed.

  1. Trial
  2. Article
  3. Signaling pathways regulating cardiac regeneration.Cell regeneration (London, England) · 2026
    Review
  4. Review
  5. Review
  6. Article
  7. Article
  8. Article
  9. bioRxiv : the preprint server for biology · 2026
    Article
  10. Article
  11. Placental insufficiency disrupts cardiomyocyte ploidy and cell cycle fate in growth-restricted fetal sheep.American journal of physiology. Regulatory, integrative and comparative physiology · 2026
    Article
  12. Article
  13. Review
  14. Article
  15. Review
  16. Article
  17. Review
  18. Cardiac Regenerative Potential of Spiny Mice (Acomys cahirinus) Manifests Itself in Expansion of Pacemaker Myocardium and Predominance of Noncanonical, IDoklady biological sciences : proceedings of the Academy of Sciences of the USSR, Biological sciences sections · 2025
    Article
  19. Article
  20. Review

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

4 · The record

Corrections and comments

5 · Who and what money

Authors and funding

6 authors.

Kanar AlkassCell and Molecular Biology, Karolinska Institutet, SE-17177 Stockholm, Sweden; Department of Forensic Medicine, The National Board of Forensic Medicine, SE-17177 Stockholm, Sweden.
Joni PanulaCell and Molecular Biology, Karolinska Institutet, SE-17177 Stockholm, Sweden.
Mattias WestmanDepartment of Medicine, Karolinska Institutet, SE-14186 Huddinge, Sweden.
Ting-Di WuInstitut Curie, Centre de Recherche, F-91405 Orsay, France; INSERM, U1196; CNRS, UMR9187, F-91405 Orsay, France.
Jean-Luc Guerquin-KernInstitut Curie, Centre de Recherche, F-91405 Orsay, France; INSERM, U1196; CNRS, UMR9187, F-91405 Orsay, France.
Olaf BergmannCell and Molecular Biology, Karolinska Institutet, SE-17177 Stockholm, Sweden. Electronic address: olaf.bergmann@ki.se.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

The magnitude of cardiomyocyte generation in the adult heart has been heavily debated. A recent report suggests that during mouse preadolescence, cardiomyocyte proliferation leads to a 40% increase in the number of cardiomyocytes. Such an expansion would change our understanding of heart growth and have far-reaching implications for cardiac regeneration. Here, using design-based stereology, we found that cardiomyocyte proliferation accounted for 30% of postnatal DNA synthesis; however, we were unable to detect any changes in cardiomyocyte number after postnatal day 11. (15)N-thymidine and BrdU analyses provided no evidence for a proliferative peak in preadolescent mice. By contrast, cardiomyocyte multinucleation comprises 57% of postnatal DNA synthesis, followed by cardiomyocyte nuclear polyploidisation, contributing with 13% to DNA synthesis within the second and third postnatal weeks. We conclude that the majority of cardiomyocytes is set within the first postnatal week and that this event is followed by two waves of non-replicative DNA synthesis. This Matters Arising paper is in response to Naqvi et al. (2014), published in Cell. See also the associated Correspondence by Soonpaa et al. (2015), and the response by Naqvi et al. (2015), published in this issue.

Indexed as

Cell DifferentiationCell ProliferationAnimalsHeartMaleMyocytes, Cardiac

Identifiers

What OpenQuestion holds

Textmetadata
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.