Evidence map›Paper›PMID 21953366›Full record

ArticleArthritis and rheumatism2012

Induction of osteoarthritis and metabolic inflammation by a very high-fat diet in mice: effects of short-term exercise.

Timothy M Griffin, Janet L Huebner, Virginia B Kraus, Zhen Yan, Farshid Guilak

Open access · greenAbstract read
In one paragraph

Article in Arthritis and rheumatism, 2012. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 126 papers, 2 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
126citing papers in PubMed, 2 pooled it
10.1field-weighted citation impact, top 1% 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

126 citing papers in PubMed, 2 syntheses or guidelines pooled it, 241 citations in OpenAlex.

  1. Pooled it
  2. Pooled it
  3. Review
  4. Article
  5. Osteoarthritis as a systemic disease.Nature reviews. Rheumatology · 2026
    Review
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66 more citing papers are in PubMed but not listed here.

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

5 authors at 4 institutions in 1 country.

Timothy M GriffinDuke University Medical Center, Durham, North Carolina 27710, USA.
Janet L Huebner
Virginia B Kraus
Zhen Yan
Farshid Guilak
Duke University · USDuke Medical Center · USDuke University Hospital · USUniversity of Virginia · US

Funding

SWI/SNF-REGULATED POSTNATAL ANGIOGENESISP20RR018758 · NCRR · OKLAHOMA MEDICAL RESEARCH FOUNDATION · PI GRIFFIN, COURTNEY T · 2003 to 2011
$14.9M
Thermally-Triggered Intra-articular Drug Delivery for OAP01AR050245 · NIAMS · DUKE UNIVERSITY · PI GUILAK, FARSHID · 2003 to 2012
$11.5M
VISCOELASTIC PROPERTIES OF NORMAL AND OA CHONDRONSR01AG015768 · NIA · WASHINGTON UNIVERSITY · PI GUILAK, FARSHID · 1998 to 2022
$7.7M
p38 MAPK a regulator of muscle contraction and functionR01AR050429 · NIAMS · VIRGINIA POLYTECHNIC INST AND ST UNIV · PI YAN, ZHEN · 2005 to 2022
$5.3M
Mechanical and Osmotic Signaling in ChondrocytesR01AR048182 · NIAMS · DUKE UNIVERSITY · PI GUILAK, FARSHID · 2003 to 2013
$3.0M
Training in Biomolecular and Tissue EngineeringT32EB001630 · NIBIB · DUKE UNIVERSITY · PI GUILAK, FARSHID · 2003 to 2007
$1.7M
Intrinsic Repair of the Knee MeniscusR01AR048852 · NIAMS · DUKE UNIVERSITY · PI GUILAK, FARSHID · 2007 to 2011
$1.4M
An Integrative Approach to Osteoarthritis and ObesityF32AR051672 · NIAMS · DUKE UNIVERSITY · PI GRIFFIN, TIMOTHY M · 2004 to 2006
$148k
NCRR NIH HHS P20 RR018758NIAMS NIH HHS AR-050429NIAMS NIH HHS AR-48182NIAMS NIH HHS AR-48852NIAMS NIH HHS AR-50245NIAMS NIH HHS AR-51672NIAMS NIH HHS F32 AR051672NIAMS NIH HHS P01 AR050245NIAMS NIH HHS R01 AR048182NIAMS NIH HHS R01 AR048852NIAMS NIH HHS R01 AR050429NIA NIH HHS AG-15768NIA NIH HHS R01 AG015768NIBIB NIH HHS EB-01630NIBIB NIH HHS T32 EB001630
6 · The paper itself

Abstract

objectiveTo test the hypotheses that obesity due to a very high-fat diet induces knee osteoarthritis (OA), and that short-term wheel-running exercise protects against obesity-induced knee OA by reducing systemic inflammation and metabolic dysregulation.

methodsMale C57BL/6J mice were fed either a control diet (13.5% kcal from fat) or a very high-fat diet (60% kcal from fat) from age 12 weeks to age 24 weeks. From 20 to 24 weeks of age, half of the mice were housed with running wheels. The severity of knee OA was determined by assessing histopathologic features, and serum cytokines were measured using a multiplex bead immunoassay and enzyme-linked immunosorbent assays. Body composition was quantified by dual-energy x-ray absorptiometry, and insulin resistance was assessed by glucose tolerance testing.

resultsFeeding mice with a very high-fat diet increased knee OA scores and levels of serum leptin, adiponectin, KC (mouse analog of interleukin-8 [IL-8]), monokine induced by interferon-γ (CXCL9), and IL-1 receptor antagonist to an extent in proportion to the gain in body fat (3-fold increase in percent body fat compared to controls). Wheel-running exercise reduced progression of OA in the medial femur of obese mice. In addition, exercise disrupted the clustering of cytokine expression and improved glucose tolerance, without reducing body fat or cytokine levels.

conclusionObesity induced by a very high-fat diet in mice causes OA and systemic inflammation in proportion to body fat. Increased joint loading is not sufficient to explain the increased incidence of knee OA with obesity, as wheel running is protective rather than damaging. Exercise improves glucose tolerance and disrupts the coexpression of proinflammatory cytokines, suggesting that increased aerobic exercise may act independently of weight loss in promoting joint health.

Indexed as

Diet, High-FatAdiponectinAnimalsBody CompositionChemokine CXCL1Chemokine CXCL9InflammationInterleukin 1 Receptor Antagonist ProteinLeptinMaleMiceObesityOsteoarthritis, KneePhysical Conditioning, AnimalAdiponectinChemokine CXCL1Chemokine CXCL9Cxcl1 protein, mouseCxcl9 protein, mouseInterleukin 1 Receptor Antagonist ProteinLeptin

Identifiers

PMID21953366
PMCPMC3268860
OpenAlexW1999158053

What OpenQuestion holds

Textmetadata
LicenceTDM
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.