Evidence map›Paper›PMID 18202097›Full record

ArticleThe Journal of physiology2008

Cyclic movement stimulates hyaluronan secretion into the synovial cavity of rabbit joints.

K R Ingram, A K T Wann, C K Angel, P J Coleman, J R Levick

Open access · greenAbstract read
In one paragraph

Article in The Journal of physiology, 2008. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 20 papers.

0numbers the graph read from it
0cells of the map it votes in
20citing papers in PubMed
2.6field-weighted citation impact, top 12% 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

20 citing papers in PubMed, 36 citations in OpenAlex.

  1. Review
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  13. Review
  14. Mechanotransduction and cartilage integrity.Annals of the New York Academy of Sciences · 2011
    Review
  15. Article
  16. Ionic currents in intimal cultured synoviocytes from the rabbit.American journal of physiology. Cell physiology · 2010
    Article
  17. Article
  18. Article
  19. Bend those knees!The Journal of physiology · 2008
    Article
  20. A systems biology approach to synovial joint lubrication in health, injury, and disease.Wiley interdisciplinary reviews. Systems biology and medicine
    Review
4 · The record

Corrections and comments

5 · Who and what money

Authors and funding

5 authors at 1 institution in 1 country.

K R IngramPhysiology, Basic Medical Sciences, St George's Hospital Medical School, University of London, London SW17 0RE, UK. jlevick@sghms.ac.uk.
A K T Wann
C K Angel
P J Coleman
J R Levick
University of London · GB

Funding

Wellcome Trust 056983/Z/99Wellcome Trust 076752/A/05
6 · The paper itself

Abstract

The novel hypothesis that the secretion of the joint lubricant hyaluronan (HA) is coupled to movement has implications for normal function and osteoarthritis, and was tested in the knee joints of anaesthetized rabbits. After washing out the endogenous synovial fluid HA (miscibility coefficient 0.4), secretion into the joint cavity was measured over 5 h in static joints and in passively cycled joints. The net static secretion rate (11.2 +/- 0.7 microg h(-1), mean +/- s.e.m., n = 90) correlated with the variable endogenous HA mass (mean 367 +/- 8 microg), with a normalized value of 3.4 +/- 0.2 microg h(-1) (100 microg)(-1) . Cyclic joint movement approximately doubled the net HA secretion rate to 22.6 +/- 1.2 microg h(-1) (n = 77) and raised the normalized percentage to 5.9 +/- 0.3 microg h(-1) (100 microg)(-1). Secretion was inhibited by 2-deoxyglucose and iodoacetate, confirming active secretion. The net accumulation rate underestimated true secretion rate due to some trans-synovial loss. HA turnover time (endogenous mass/secretion rate) was 17-30 h (static) to 8-15 h (moved) The results demonstrate for the first time that the active secretion of HA is coupled to joint usage. Movement-secretion coupling may protect joints against the damaging effects of repetitive joint use, replace HA lost during periods of immobility (overnight), and contribute to the clinical benefit of exercise therapy in moderate osteoarthritis.

Indexed as

AnimalsHyaluronic AcidKnee JointMetabolic Clearance RateMovementPhysical ExertionRabbitsRange of Motion, ArticularSynovial FluidSynovial MembraneHyaluronic Acid

Identifiers

PMID18202097
PMCPMC2375686
OpenAlexW1587347092

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.