Evidence map›Paper›PMID 35247847›Full record

Trial reportEBioMedicine2022

Modification of subcutaneous white adipose tissue inflammation by omega-3 fatty acids is limited in human obesity-a double blind, randomised clinical trial.

Helena L Fisk, Caroline E Childs, Elizabeth A Miles, Robert Ayres, Paul S Noakes, Carolina Paras-Chavez, Ondrej Kuda, Jan Kopecký, Elie Antoun, Karen A Lillycrop and 1 more

Open access · goldAbstract readRandomized Controlled Trial
In one paragraph

Trial report in EBioMedicine, 2022. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 39 papers, 2 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
39citing papers in PubMed, 2 pooled it
6.9field-weighted citation impact, top 2% 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

39 citing papers in PubMed, 2 syntheses or guidelines pooled it, 64 citations in OpenAlex.

  1. Pooled it
  2. Pooled it
  3. Trial
  4. Trial
  5. Trial
  6. Trial
  7. Article
  8. Article
  9. Article
  10. Article
  11. Article
  12. Article
  13. Review
  14. Article
  15. Article
  16. Article
  17. Article
  18. Review
  19. Article
  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

11 authors at 2 institutions in 3 countries.

Helena L FiskSchool of Human Development and Health, Faculty of Medicine, Southampton General Hospital, University of Southampton, IDS Building, MP887, Tremona Road, Southampton SO16 6YD, United Kingdom. Electronic address: h.fisk@soton.ac.uk.
Caroline E ChildsSchool of Human Development and Health, Faculty of Medicine, Southampton General Hospital, University of Southampton, IDS Building, MP887, Tremona Road, Southampton SO16 6YD, United Kingdom.
Elizabeth A MilesSchool of Human Development and Health, Faculty of Medicine, Southampton General Hospital, University of Southampton, IDS Building, MP887, Tremona Road, Southampton SO16 6YD, United Kingdom.
Robert AyresSchool of Human Development and Health, Faculty of Medicine, Southampton General Hospital, University of Southampton, IDS Building, MP887, Tremona Road, Southampton SO16 6YD, United Kingdom.
Paul S NoakesSchool of Human Development and Health, Faculty of Medicine, Southampton General Hospital, University of Southampton, IDS Building, MP887, Tremona Road, Southampton SO16 6YD, United Kingdom; Medical School, University of Notre Dame Australia, Fremantle, Australia.
Carolina Paras-ChavezSchool of Human Development and Health, Faculty of Medicine, Southampton General Hospital, University of Southampton, IDS Building, MP887, Tremona Road, Southampton SO16 6YD, United Kingdom.
Ondrej KudaInstitute of Physiology, Czech Academy of Sciences, Prague, Czech Republic.
Jan KopeckýInstitute of Physiology, Czech Academy of Sciences, Prague, Czech Republic.
Elie AntounSchool of Human Development and Health, Faculty of Medicine, Southampton General Hospital, University of Southampton, IDS Building, MP887, Tremona Road, Southampton SO16 6YD, United Kingdom.
Karen A LillycropSchool of Human Development and Health, Faculty of Medicine, Southampton General Hospital, University of Southampton, IDS Building, MP887, Tremona Road, Southampton SO16 6YD, United Kingdom; School of Biological Sciences, Faculty of Environmental and Life Sciences, University of Southampton, Southampton, United Kingdom.
Philip C CalderSchool of Human Development and Health, Faculty of Medicine, Southampton General Hospital, University of Southampton, IDS Building, MP887, Tremona Road, Southampton SO16 6YD, United Kingdom; NIHR Southampton Biomedical Research Centre, University Hospital Southampton NHS Foundation Trust and University of Southampton, Southampton, United Kingdom.
Southampton General Hospital · GBCzech Academy of Sciences · CZ

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundObesity is associated with enhanced inflammation. However, investigation in human subcutaneous white adipose tissue (scWAT) is limited and the mechanisms by which inflammation occurs have not been well elucidated. Marine long chain omega-3 polyunsaturated fatty acids (LC n-3 PUFAs) have anti-inflammatory actions and may reduce scWAT inflammation.

methodsSubcutaneous white adipose tissue (scWAT) biopsies were collected from individuals living with obesity (n=45) and normal weight individuals (n=39) prior to and following a 12-week intervention with either 3 g/day of a fish oil concentrate (providing 1.1 g eicosapentaenoic acid (EPA) + 0.8 g docosahexaenoic acid (DHA)) or 3 g/day of corn oil. ScWAT fatty acid, oxylipin, and transcriptome profiles were assessed by gas chromatography, ultra-pure liquid chromatography tandem mass spectrometry, RNA sequencing and qRT-PCR, respectively.

findingsObesity was associated with greater scWAT inflammation demonstrated by lower concentrations of specialised pro-resolving mediators (SPMs) and hydroxy-DHA metabolites and an altered transcriptome with differential expression of genes involved in LC n-3 PUFA activation, oxylipin synthesis, inflammation, and immune response. Intervention with LC n-3 PUFAs increased their respective metabolites including the SPM precursor 14-hydroxy-DHA in normal weight individuals and decreased arachidonic acid derived metabolites and expression of genes involved in immune and inflammatory response with a greater effect in normal weight individuals.

interpretationDownregulated expression of genes responsible for fatty acid activation and metabolism may contribute to an inflammatory oxylipin profile and limit the effects of LC n-3 PUFAs in obesity. There may be a need for personalised LC n-3 PUFA supplementation based on obesity status.

fundingEuropean Commission Seventh Framework Programme (Grant Number 244995) and Czech Academy of Sciences (Lumina quaeruntur LQ200111901).

Indexed as

Dietary SupplementsFatty Acids, Omega-3Adipose Tissue, WhiteDocosahexaenoic AcidsFatty AcidsHumansInflammationObesityDocosahexaenoic AcidsFatty AcidsFatty Acids, Omega-3Adipose tissueImmune systemInflammationLC n-3 PUFALipidsObesity

Identifiers

PMID35247847
PMCPMC8894262
OpenAlexW4214943549

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.