Evidence map›Paper›PMID 31417147›Full record

ArticleScientific reports2019

Distribution and dynamics of mitochondrial DNA methylation in oocytes, embryos and granulosa cells.

Marc-André Sirard

Open access · goldAbstract read
In one paragraph

Article in Scientific reports, 2019. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 31 papers.

0numbers the graph read from it
0cells of the map it votes in
31citing papers in PubMed
2.6field-weighted citation impact, top 9% 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

31 citing papers in PubMed, 46 citations in OpenAlex.

  1. Article
  2. Review
  3. Review
  4. Analysis of mtDNA Methylation.Methods in molecular biology (Clifton, N.J.) · 2026
    Article
  5. Review
  6. Article
  7. Effect of bovine oocyte transportation system on embryonic quality.The Journal of reproduction and development · 2025
    Article
  8. Article
  9. Article
  10. Article
  11. Article
  12. Article
  13. Review
  14. Article
  15. Review
  16. Computational Methods for Single-cell DNA Methylome Analysis.Genomics, proteomics & bioinformatics · 2023
    Review
  17. Article
  18. Article
  19. Article
  20. Article
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

1 author at 1 institution in 1 country.

Marc-André SirardCentre de recherche en reproduction, développement et santé intergénérationnelle (CRDSI) Département des Sciences Animales, Faculté des sciences de l'agriculture et de l'alimentation, Université Laval, Québec, Canada. Marc-Andre.Sirard@fsaa.ulaval.ca.ORCID http://orcid.org/0000-0001-8667-6682
Ministère de l'Agriculture, des Pêcheries et de l'Alimentation · CA

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Comparison of mitochondrial DNA (mtDNA) methylation patterns in oocytes, blastocysts and ovarian granulosa cells indicates hitherto unsuspected dynamics. Oocytes and blastocysts recovered from cows subjected to ovarian stimulation and from non-stimulated abattoir ovaries were analyzed using bisulphite transformation of DNA followed by whole genome sequencing. The cow is a recognized as a good model for human oocyte and pre-implantation development. The number of mtDNA copies is high in oocytes (200,000-400,000) and early embryos, resulting in very high coverage (>3000x) and very low p values for each of 716 cytosine-based nucleosides. Methylation ratio was lowest in oocytes, following by blastocysts then granulosa cells and was not restricted to CG sites but was found also at CHG and CHH sites. The initial methylation pattern is conserved during the first week of life but not in somatic cells. RNA analysis of mitochondria encoded genes showed a significant inverse correlation between methylation and expression for almost all sequences. Methylation was more extensive in somatic tissues from mature animals than in immature pre-pubertal animals. Our findings suggest that mtDNA methylation might play a programming role during gametogenesis and would be subject to epigenetic regulation according to environment and/or maternal maturity.

Indexed as

AnimalsBlastocystCattleCytosineDNA MethylationDNA, MitochondrialEmbryo, MammalianFemaleGranulosa CellsOocytesRNA, MessengerCytosineDNA, MitochondrialRNA, Messenger

Identifiers

PMID31417147
PMCPMC6695495
OpenAlexW2967037758

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.