Evidence map›Paper›PMID 28241754›Full record

ArticleBMC medical genetics2017

DNA methylation profiles of elderly individuals subjected to indentured childhood labor and trauma.

Zoya Marinova, Andreas Maercker, Andreas Küffer, Mark D Robinson, Tomasz K Wojdacz, Susanne Walitza, Edna Grünblatt, Andrea Burri

Open access · goldAbstract read
In one paragraph

Article in BMC medical genetics, 2017. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 16 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
16citing papers in PubMed, 1 pooled it
5.1field-weighted citation impact, top 5% 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

16 citing papers in PubMed, 1 synthesis or guideline pooled it, 34 citations in OpenAlex.

  1. Pooled it
  2. Article
  3. Review
  4. Article
  5. Article
  6. Article
  7. Review
  8. Review
  9. Review
  10. Aging · 2019
    Article
  11. Article
  12. Article
  13. Article
  14. Review
  15. Article
  16. 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

8 authors at 5 institutions in 3 countries.

Zoya MarinovaDepartment of Child and Adolescent Psychiatry and Psychotherapy, Psychiatric Hospital, University of Zurich, Neumunsterallee 9, 8032, Zurich, Switzerland. zoyamarinova@gmail.com.
Andreas MaerckerDepartment of Psychology, University of Zurich, Zurich, Switzerland.
Andreas KüfferDepartment of Psychology, University of Zurich, Zurich, Switzerland.
Mark D RobinsonInstitute of Molecular Life Sciences, University of Zurich, Zurich, Switzerland.
Tomasz K WojdaczAarhus Institute of Advanced Studies, University of Aarhus, Aarhus, Denmark.
Susanne WalitzaDepartment of Child and Adolescent Psychiatry and Psychotherapy, Psychiatric Hospital, University of Zurich, Neumunsterallee 9, 8032, Zurich, Switzerland.
Edna GrünblattDepartment of Child and Adolescent Psychiatry and Psychotherapy, Psychiatric Hospital, University of Zurich, Neumunsterallee 9, 8032, Zurich, Switzerland.
Andrea BurriDepartment of Psychology, University of Zurich, Zurich, Switzerland.
University of Zurich · CHSwiss Integrative Center for Human Health · CHAarhus University · DKNorth Shore Hospital · NZSIB Swiss Institute of Bioinformatics · CH

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundChildhood trauma is associated with increased vulnerability to mental and somatic disorders later in life. Epigenetic modifications such as DNA methylation are one potential mechanism through which such long-lasting impairments/consequences can be explained. The aim of the present study was to investigate whether childhood trauma is associated with long-term DNA methylation alterations in old age.

methodsWe assessed genome-wide DNA methylation profiles in a cohort of former indentured child laborers ("Verdingkinder") who suffered severe childhood adversities (N = 30; M age = 75.9 years), and compared them to control group with similar demographic characteristics (N = 15, M age = 72.8 years). DNA was isolated from epithelial buccal cells and hybridized to the Illumina Infinium 450 k DNA methylation array, which provides coverage of 485,000 methylation sites.

resultsAfter accounting for batch effects, age, gender and multiple testing, 71 differentially methylated CpG positions were identified between the two groups. They were annotated among others to genes involved in neuronal projections and neuronal development. Some of the identified genes with differential methylation (DLG associated protein 2, mechanistic target of rapamycin) have previously been associated with traumatic stress.

conclusionsThe results indicate specific epigenetic alterations in elderly individuals who were subjected to childhood adversities. Psychiatric and somatic comorbidities as well as differences in buccal epithelial cells proportion may contribute to the observed epigenetic differences.

Indexed as

Child AbuseDNA MethylationAgedAged, 80 and overCase-Control StudiesChildCpG IslandsDNAFemaleHumansIntracellular Signaling Peptides and ProteinsMaleMouth MucosaOligonucleotide Array Sequence AnalysisProteinsDNAIntracellular Signaling Peptides and ProteinsProteinsSEC14L4 protein, humansrc kinase associated phosphoprotein 2

Identifiers

PMID28241754
PMCPMC5329963
OpenAlexW2594112419

What OpenQuestion holds

Textmetadata
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.