Evidence map›Paper›PMID 33221826›Full record

ArticleInternational journal of obesity (2005)2021

F13A1 transglutaminase expression in human adipose tissue increases in acquired excess weight and associates with inflammatory status of adipocytes.

M T Kaartinen, M Arora, S Heinonen, A Hang, A Barry, J Lundbom, A Hakkarainen, N Lundholm, A Rissanen, J Kaprio and 1 more

Abstract read
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In one paragraph

Article in International journal of obesity (2005), 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 9 papers.

0numbers the graph read from it
0cells of the map it votes in
9citing papers in PubMed
2.0field-weighted citation impact, top 10% 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

9 citing papers in PubMed, 30 citations in OpenAlex.

  1. Integrated Genomic and Transcriptomic Study RevealsCirculation. Genomic and precision medicine · 2026
    Article
  2. F13A1-Mediated Macrophage Activation Promotes MASH Progression via the PKM2/HIF1A Pathway.Advanced science (Weinheim, Baden-Wurttemberg, Germany) · 2026
    Article
  3. Article
  4. Article
  5. Review
  6. Article
  7. Article
  8. Factor XIII-A in Diseases: Role Beyond Blood Coagulation.International journal of molecular sciences · 2021
    Review
  9. Transglutaminases and Obesity in Humans: Association ofInternational journal of molecular sciences · 2020
    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

11 authors at 3 institutions in 2 countries.

M T KaartinenFaculty of Medicine (Division of Experimental Medicine), McGill University, Montreal, QC, Canada. mari.kaartinen@mcgill.ca.ORCID http://orcid.org/0000-0003-2999-6502
M AroraFaculty of Medicine (Division of Experimental Medicine), McGill University, Montreal, QC, Canada.
S HeinonenObesity Research Unit, Research Program for Clinical and Molecular Metabolism, Faculty of Medicine, University of Helsinki, Helsinki, Finland.
A HangFaculty of Medicine (Division of Experimental Medicine), McGill University, Montreal, QC, Canada.
A BarryDepartments of Epidemiology, Biostatistics and Occupational Health, McGill University, Montreal, QC, Canada.
J LundbomObesity Center, Abdominal Center, Endocrinology, University of Helsinki and Helsinki University Central Hospital, Helsinki, Finland.
A HakkarainenObesity Center, Abdominal Center, Endocrinology, University of Helsinki and Helsinki University Central Hospital, Helsinki, Finland.ORCID http://orcid.org/0000-0002-7367-2532
N LundholmObesity Center, Abdominal Center, Endocrinology, University of Helsinki and Helsinki University Central Hospital, Helsinki, Finland.
A RissanenObesity Research Unit, Research Program for Clinical and Molecular Metabolism, Faculty of Medicine, University of Helsinki, Helsinki, Finland.
J KaprioDepartment of Public Health, Finnish Twin Cohort Study, University of Helsinki, Helsinki, Finland.ORCID http://orcid.org/0000-0002-3716-2455
K H PietiläinenObesity Research Unit, Research Program for Clinical and Molecular Metabolism, Faculty of Medicine, University of Helsinki, Helsinki, Finland.ORCID http://orcid.org/0000-0002-8522-1288
University of Helsinki · FIMcGill University · CAJewish General Hospital · CA

Funding

CIHR MOP-119403
6 · The paper itself

Abstract

objectiveF13A1/FXIII-A transglutaminase has been linked to adipogenesis in cells and to obesity in humans and mice, however, its role and associated molecular pathways in human acquired excess weight have not been explored.

methodsWe examined F13A1 expression and association to human weight gain in weight-discordant monozygotic twins (Heavy-Lean difference (ΔWeight, 16.8 kg ± 7.16 for n = 12). The twin pairs were examined for body composition (by dual-energy X-ray absorptiometry), abdominal body fat distribution (by magnetic resonance imaging), liver fat content (by magnetic resonance spectroscopy), circulating adipocytokines, leptin and adiponectin, as well as serum lipids. Affymetrix full transcriptome mRNA analysis was performed from adipose tissue and adipocyte-enriched fractions from subcutaneous abdominal adipose tissue biopsies. F13A1 differential expression between the heavy and lean co-twins was examined and its correlation transcriptome changes between co-twins were performed.

resultsF13A1 mRNA showed significant increase in adipose tissue (p < 0.0001) and an adipocyte-enriched fraction (p = 0.0012) of the heavier co-twin. F13A1 differential expression in adipose tissue (Heavy-Lean ΔF13A1) showed significant negative correlation with circulating adiponectin (p = 0.0195) and a positive correlation with ΔWeight (p = 0.034), ΔBodyFat (0.044) and ΔAdipocyte size (volume, p = 0.012;) in adipocyte-enriched fraction. A whole transcriptome-wide association study (TWAS) on ΔF13A1 vs weight-correlated ΔTranscriptome identified 182 F13A1-associated genes (r > 0.7, p = 0.05) with functions in several biological pathways including cell stress, inflammatory response, activation of cells/leukocytes, angiogenesis and extracellular matrix remodeling. F13A1 did not associate with liver fat accumulation.

conclusionsF13A1 levels in adipose tissue increase with acquired excess weight and associate with pro-inflammatory, cell stress and tissue remodeling pathways. This supports its role in expansion and inflammation of adipose tissue in obesity.

Indexed as

Adipose TissueFactor XIIIaAdipocytesAdultBody WeightCells, CulturedFemaleHumansInflammationMaleObesityTwins, MonozygoticFactor XIIIa

Identifiers

PMID33221826
OpenAlexW3107540935

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.