Evidence map›Paper›PMID 25783037›Full record

ArticleInternational journal of obesity (2005)2015

The fat cell epigenetic signature in post-obese women is characterized by global hypomethylation and differential DNA methylation of adipogenesis genes.

I Dahlman, I Sinha, H Gao, D Brodin, A Thorell, M Rydén, D P Andersson, J Henriksson, A Perfilyev, C Ling and 2 more

Abstract read
PubMed Publisher
In one paragraph

Article in International journal of obesity (2005), 2015. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 53 papers, 2 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
53citing papers in PubMed, 2 pooled it
5.1field-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

53 citing papers in PubMed, 2 syntheses or guidelines pooled it, 101 citations in OpenAlex.

  1. Pooled it
  2. Adipose Tissue Dysfunction in Polycystic Ovary Syndrome.The Journal of clinical endocrinology and metabolism · 2023
    Pooled it
  3. Trial
  4. Trial
  5. Review
  6. Review
  7. Review
  8. Review
  9. Aging reveals a sex-dependent susceptibility of sarcospan-deficient mice to cardiometabolic disease.American journal of physiology. Heart and circulatory physiology · 2024
    Article
  10. Article
  11. Review
  12. Article
  13. Review
  14. Article
  15. Article
  16. Recent progress in epigenetics of obesity.Diabetology & metabolic syndrome · 2022
    Review
  17. Article
  18. Review
  19. Review
  20. Review
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

12 authors at 2 institutions in 1 country.

I DahlmanDepartment of Medicine, Karolinska Institutet, Stockholm, Sweden.
I SinhaDepartment of Biosciences and Nutrition, Karolinska Institutet, Stockholm, Sweden.
H GaoDepartment of Biosciences and Nutrition, Karolinska Institutet, Stockholm, Sweden.
D BrodinDepartment of Biosciences and Nutrition, Karolinska Institutet, Stockholm, Sweden.
A Thorell1] Department of Clinical Sciences, Danderyds Hospital, Karolinska Institutet., Stockholm, Sweden [2] Department of Surgery, Ersta Hospital, Karolinska Institutet, Stockholm, Sweden.
M RydénDepartment of Medicine, Karolinska Institutet, Stockholm, Sweden.
D P AnderssonDepartment of Medicine, Karolinska Institutet, Stockholm, Sweden.
J Henriksson1] Department of Biosciences and Nutrition, Karolinska Institutet, Stockholm, Sweden [2] European Molecular Biology Laboratory, European Bioinformatics Institute, Wellcome Trust Genome Campus, Hinxton, UK.
A PerfilyevDepartment of Clinical Sciences, Epigenetics and Diabetes, Lund University Diabetes Centre, CRC, Scania University Hospital, Malmo, Sweden.
C LingDepartment of Clinical Sciences, Epigenetics and Diabetes, Lund University Diabetes Centre, CRC, Scania University Hospital, Malmo, Sweden.
K Dahlman-Wright1] Department of Biosciences and Nutrition, Karolinska Institutet, Stockholm, Sweden [2] SciLifeLab, Science for Life Laboratory, Solna, Sweden.
P ArnerDepartment of Medicine, Karolinska Institutet, Stockholm, Sweden.
Karolinska Institutet · SEScania (Sweden) · SE

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

BACKGROUND/

objectivesObese subjects have increased number of enlarged fat cells that are reduced in size but not in number in post-obesity. We performed DNA methylation profiling in fat cells with the aim of identifying differentially methylated DNA sites (DMS) linked to adipose hyperplasia (many small fat cells) in post-obesity. SUBJECTS/

methodsGenome-wide DNA methylation was analyzed in abdominal subcutaneous fat cells from 16 women examined 2 years after gastric bypass surgery at a post-obese state (body mass index (BMI) 26±2 kg m(-2), mean±s.d.) and from 14 never-obese women (BMI 25±2 kg m(-2)). Gene expression was analyzed in subcutaneous adipose tissue from nine women in each group. In a secondary analysis, we examined DNA methylation and expression of adipogenesis genes in 15 and 11 obese women, respectively.

resultsThe average degree of DNA methylation of all analyzed CpG sites was lower in fat cells from post-obese as compared with never-obese women (P=0.014). A total of 8504 CpG sites were differentially methylated in fat cells from post-obese versus never-obese women (false discovery rate 1%). DMS were under-represented in CpG islands and surrounding shores. The 8504 DMS mapped to 3717 unique genes; these genes were over-represented in cell differentiation pathways. Notably, 27% of the genes linked to adipogenesis (that is, 35 of 130) displayed DMS (adjusted P=10(-8)) in post-obese versus never-obese women. Next, we explored DNA methylation and expression of genes linked to adipogenesis in more detail in adipose tissue samples. DMS annotated to adipogenesis genes were not accompanied by differential gene expression in post-obese compared with never-obese women. In contrast, adipogenesis genes displayed differential DNA methylation accompanied by altered expression in obese women.

conclusionsGlobal CpG hypomethylation and over-representation of DMS in adipogenesis genes in fat cells may contribute to adipose hyperplasia in post-obese women.

Indexed as

Gastric BypassWeight GainWeight LossAdipocytesAdipogenesisAdultBiomarkersBody Mass IndexCpG IslandsDNA MethylationFemaleFollow-Up StudiesGene Expression RegulationGenome-Wide Association StudyHumansMiddle AgedBiomarkers

Identifiers

PMID25783037
OpenAlexW2062657781

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.