Evidence map›Paper›PMID 25875933›Full record

ArticlePloS one2015

Serum levels of oxylipins in achilles tendinopathy: an exploratory study.

Sandra Gouveia-Figueira, Malin L Nording, Jamie E Gaida, Sture Forsgren, Håkan Alfredson, Christopher J Fowler

Open access · goldAbstract read
In one paragraph

Article in PloS one, 2015. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 17 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
17citing papers in PubMed, 1 pooled it
2.3field-weighted citation impact, top 13% 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

17 citing papers in PubMed, 1 synthesis or guideline pooled it, 29 citations in OpenAlex.

  1. Pooled it
  2. Trial
  3. Article
  4. Review
  5. Article
  6. Article
  7. Article
  8. Article
  9. Inflammatory mechanisms linking obesity and tendinopathy.Journal of orthopaedic translation · 2021
    Review
  10. Article
  11. Article
  12. Review
  13. Article
  14. Article
  15. Article
  16. Article
  17. 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

6 authors at 2 institutions in 2 countries.

Sandra Gouveia-FigueiraDepartment of Pharmacology and Clinical Neuroscience, Pharmacology Unit, Umeå University, Umeå, Sweden; Department of Chemistry, Umeå University, Umeå, Sweden.
Malin L NordingDepartment of Chemistry, Umeå University, Umeå, Sweden.
Jamie E GaidaDiscipline of Physiotherapy, University of Canberra, Bruce, ACT, Australia; Department of Physiotherapy, Monash University, Melbourne, VIC, Australia.
Sture ForsgrenDepartment of Integrative Medical Biology, Section for Anatomy, Umeå University, Umeå, Sweden.
Håkan AlfredsonDepartment of Surgical and Perioperative Sciences, Sports Medicine Unit, Umeå University, Umeå, Sweden.
Christopher J FowlerDepartment of Pharmacology and Clinical Neuroscience, Pharmacology Unit, Umeå University, Umeå, Sweden.
Umeå University · SEMonash University · AU

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundLinoleic acid-derived oxidation products are found in experimental pain models. However, little is known about the levels of such oxylipins in human pain. In consequence, in the present study, we have undertaken a lipidomic profiling of oxylipins in blood serum from patients with Achilles tendinopathy and controls. METHODOLOGY/PRINCIPAL

findingsA total of 34 oxylipins were analysed in the serum samples. At a significance level of P<0.00147 (<0.05/34), two linoleic acid-derived oxylipins, 13-hydroxy-10E,12Z-octadecadienoic (13-HODE) and 12(13)-dihydroxy-9Z-octadecenoic acid (12,13-DiHOME) were present at significantly higher levels in the Achilles tendinopathy samples. This difference remained significant when the dataset was controlled for age, gender and body-mass index. In contrast, 0/21 of the arachidonic acid- and 0/4 of the dihomo-γ-linolenic acid, eicosapentaenoic acid or docosahenaenoic acid-derived oxylipins were higher in the patient samples at this level of significance. The area under the Receiver-Operator Characteristic (ROC) curve for 12,13-DiHOME was 0.91 (P<0.0001). Levels of four N-acylethanolamines were also analysed and found not to be significantly different between the controls and the patients at the level of P<0.0125 (<0.05/4). CONCLUSIONS/SIGNIFICANCE: It is concluded from this exploratory study that abnormal levels of linoleic acid-derived oxylipins are seen in blood serum from patients with Achilles tendinopathy. Given the ability of two of these, 9- and 13-HODE to activate transient receptor potential vanilloid 1, it is possible that these changes may contribute to the symptoms seen in Achilles tendinopathy.

Indexed as

Achilles Tendon8,11,14-Eicosatrienoic AcidAdultAgedBiomarkersCase-Control StudiesEthanolaminesFemaleHumansLinoleic AcidLinoleic AcidsMaleMiddle AgedOxidation-ReductionOxylipinsRisk Factors13-hydroxy-9,11-octadecadienoic acid8,11,14-Eicosatrienoic AcidBiomarkersEthanolaminesLinoleic AcidLinoleic AcidsN-acylethanolaminesOxylipins

Identifiers

PMID25875933
PMCPMC4395257
OpenAlexW2095622857

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.