Evidence map›Paper›PMID 30885225›Full record

ArticleLipids in health and disease2019

Anterior cruciate ligament transection alters the n-3/n-6 fatty acid balance in the lapine infrapatellar fat pad.

Anne-Mari Mustonen, Reijo Käkelä, Mikko A J Finnilä, Andrew Sawatsky, Rami K Korhonen, Simo Saarakkala, Walter Herzog, Tommi Paakkonen, Petteri Nieminen

Abstract read
In one paragraph

Article in Lipids in health and disease, 2019. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 16 papers.

0numbers the graph read from it
0cells of the map it votes in
16citing papers in PubMed
–field-weighted citation impact
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. Article
  2. Early Post‑Traumatic Osteoarthritis Features Greater Cartilage Extracellular Matrix Proteoglycan Loss Compared to the Pericellular Matrix.Journal of orthopaedic research : official publication of the Orthopaedic Research Society · 2026
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  12. Adiponectin, May Be a Potential Protective Factor for Obesity-Related Osteoarthritis.Diabetes, metabolic syndrome and obesity : targets and therapy · 2022
    Review
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  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

9 authors.

Anne-Mari MustonenInstitute of Biomedicine/Anatomy, School of Medicine, Faculty of Health Sciences, University of Eastern Finland, Kuopio, Finland. anne-mari.mustonen@uef.fi.ORCID http://orcid.org/0000-0003-2266-2518
Reijo KäkeläMolecular and Integrative Biosciences Research Programme, Faculty of Biological and Environmental Sciences, University of Helsinki, Helsinki, Finland.
Mikko A J FinniläDepartment of Applied Physics, Faculty of Science and Forestry, University of Eastern Finland, Kuopio, Finland.
Andrew SawatskyHuman Performance Laboratory, Faculty of Kinesiology, University of Calgary, Calgary, AB, Canada.
Rami K KorhonenDepartment of Applied Physics, Faculty of Science and Forestry, University of Eastern Finland, Kuopio, Finland.
Simo SaarakkalaResearch Unit of Medical Imaging, Physics and Technology, Faculty of Medicine, University of Oulu, Oulu, Finland.
Walter HerzogHuman Performance Laboratory, Faculty of Kinesiology, University of Calgary, Calgary, AB, Canada.
Tommi PaakkonenInstitute of Biomedicine/Anatomy, School of Medicine, Faculty of Health Sciences, University of Eastern Finland, Kuopio, Finland.
Petteri NieminenInstitute of Biomedicine/Anatomy, School of Medicine, Faculty of Health Sciences, University of Eastern Finland, Kuopio, Finland.

Funding

Academy of Finland 286526Academy of Finland 303786Canada Research Chairs Program n/aCIHR n/aEuropean Research Council 336267Finnish Cultural Foundation n/aJane and Aatos Erkko Foundation n/aKillam Foundation n/aSigrid Juséliuksen Säätiö n/aUniversity of Eastern Finland n/a
6 · The paper itself

Abstract

backgroundThe infrapatellar fat pad (IFP) of the knee joint has received lots of attention recently due to its emerging role in the pathogenesis of osteoarthritis (OA), where it displays an inflammatory phenotype. The aim of the present study was to examine the infrapatellar fatty acid (FA) composition in a rabbit (Oryctolagus cuniculus) model of early OA created by anterior cruciate ligament transection (ACLT).

methodsOA was induced randomly in the left or right knee joint of skeletally mature New Zealand White rabbits by ACLT, while the contralateral knee was left intact. A separate group of unoperated rabbits served as controls. The IFP of the ACLT, contralateral, and control knees were harvested following euthanasia 2 or 8 weeks post-ACLT and their FA composition was determined with gas chromatography-mass spectrometry.

resultsThe n-3/n-6 polyunsaturated FA (PUFA) ratio shifted in a pro-inflammatory direction after ACLT, already observed 2 weeks after the operation (0.20 ± 0.008 vs. 0.18 ± 0.009). At 8 weeks, the FA profile of the ACLT group was characterized with increased percentages of 20:4n-6 (0.44 ± 0.064 vs. 0.98 ± 0.339 mol-%) and 22:6n-3 (0.03 ± 0.014 vs. 0.07 ± 0.015 mol-%) and with decreased monounsaturated FA (MUFA) sums (37.19 ± 1.586 vs. 33.20 ± 1.068 mol-%) and n-3/n-6 PUFA ratios (0.20 ± 0.008 vs. 0.17 ± 0.008). The FA signature of the contralateral knees resembled that of the unoperated controls in most aspects, but had increased proportions of total n-3 PUFA and reduced MUFA sums.

conclusionsThese findings provide novel information on the effects of early OA on the infrapatellar FA profile in the rabbit ACLT model. The reduction in the n-3/n-6 PUFA ratio of the IFP is in concordance with the inflammation and cartilage degradation in early OA and could contribute to disease pathogenesis.

Indexed as

Adipose TissueAnimalsAnterior Cruciate LigamentDisease Models, AnimalFatty Acids, Omega-3Fatty Acids, Omega-6FemaleKnee JointOsteoarthritis, KneePatellaRabbitsFatty Acids, Omega-3Fatty Acids, Omega-6Anterior cruciate ligament transectionKnee jointN-3 polyunsaturated fatty acidsN-6 polyunsaturated fatty acidsOryctolagus cuniculusOsteoarthritis

Identifiers

PMID30885225
PMCPMC6421636

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Registered trials

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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.