Evidence map›Paper›PMID 27646532›Full record

ArticleOsteoarthritis and cartilage2017

Spinal microglial activation in a murine surgical model of knee osteoarthritis.

P B Tran, R E Miller, S Ishihara, R J Miller, A M Malfait

Open access · bronzeAbstract read
In one paragraph

Article in Osteoarthritis and cartilage, 2017. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 33 papers.

0numbers the graph read from it
0cells of the map it votes in
33citing papers in PubMed
2.3field-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

33 citing papers in PubMed, 50 citations in OpenAlex.

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  15. Assessment of osteoarthritis functional outcomes and intra-articular injection volume in the rat anterior cruciate ligament transection model.Journal of orthopaedic research : official publication of the Orthopaedic Research Society · 2022
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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 2 institutions in 1 country.

P B TranDepartment of Internal Medicine, Division of Rheumatology, Rush University Medical Center, 1611 W. Harrison St, Suite 510, Chicago, IL, USA.
R E MillerDepartment of Internal Medicine, Division of Rheumatology, Rush University Medical Center, 1611 W. Harrison St, Suite 510, Chicago, IL, USA; Department of Biochemistry, Rush University Medical Center, 1611 W. Harrison St, Suite 510, Chicago, IL, USA.
S IshiharaDepartment of Internal Medicine, Division of Rheumatology, Rush University Medical Center, 1611 W. Harrison St, Suite 510, Chicago, IL, USA.
R J MillerDepartment of Pharmacology, Northwestern University, Chicago, IL, USA.
A M MalfaitDepartment of Internal Medicine, Division of Rheumatology, Rush University Medical Center, 1611 W. Harrison St, Suite 510, Chicago, IL, USA; Department of Biochemistry, Rush University Medical Center, 1611 W. Harrison St, Suite 510, Chicago, IL, USA. Electronic address: anne-marie_malfait@rush.edu.
Rush University Medical Center · USNorthwestern University · US

Funding

Osteoarthritis Progression And Sensory Pathway AlterationsR01AR064251 · NIAMS · RUSH UNIVERSITY MEDICAL CENTER · PI MALFAIT, ANNE-MARIE, MILLER, RICHARD J · 2013 to 2025
$7.6M
Molecular Pathways of Pain Generation in OsteoarthritisR01AR060364 · NIAMS · RUSH UNIVERSITY MEDICAL CENTER · PI MALFAIT, ANNE-MARIE · 2011 to 2025
$6.0M
Biomechanical Pathways Associated with Osteoarthritis PainK01AR070328 · NIAMS · RUSH UNIVERSITY MEDICAL CENTER · PI MILLER, RACHEL ELIZABETH · 2016 to 2020
$547k
MCP-1/CCR2 Signaling in the Maintenance of OA Pathology and Associated PainF32AR062927 · NIAMS · RUSH UNIVERSITY MEDICAL CENTER · PI MILLER, RACHEL ELIZABETH · 2013 to 2015
$131k
NIAMS NIH HHS F32 AR062927NIAMS NIH HHS K01 AR070328NIAMS NIH HHS R01 AR060364NIAMS NIH HHS R01 AR064251
6 · The paper itself

Abstract

objectiveMicrogliosis, the activation of microglial cells, is thought to contribute to synaptic transmission in the dorsal horn and thereby promote chronic pain. The primary aim of this study was to document the temporal profile of dorsal horn microgliosis after destabilization of the medial meniscus (DMM) in wild type (WT) and Adamts5 null mice. Since neuronal fractalkine (CX3CL1) contributes to microgliosis, we assessed its release from dorsal root ganglia (DRG) cultures after DMM.

designDMM or sham surgery was performed in the right knee of 10-week old male WT, CX3CR1-green fluorescent protein (GFP), or Adamts5 null C57BL/6 mice. Hind paw mechanical allodynia was monitored using von Frey fibers. L4 dorsal horn microgliosis was assessed 4, 8 and 16 weeks after surgery, based on the morphology of Iba1-immunoreactive microglia. DRG cells (L3-L5) were cultured and supernatants collected for fractalkine (FKN) ELISA.

resultsIn WT mice, numbers of activated microglia were increased 8 and 16 weeks, but not 4 weeks, after DMM but not sham surgery. DRG cultures showed increased basal FKN release at 8 and 16 weeks. Adamts5 null mice did not develop mechanical allodynia up to 16 weeks after DMM. Accordingly, DRG cultures from these mice did not exhibit increased FKN release and dorsal horn microgliosis did not occur.

conclusionDMM surgery leads to late stage dorsal horn microgliosis. The temporal correlation with DRG FKN release suggests it may contribute to microgliosis. Reduced microgliosis in Adamts5 null mice, which are protected from joint damage and associated mechanical allodynia after DMM, suggests that microgliosis is associated with joint damage and accompanying persistent pain.

Indexed as

AnimalsBiomarkersChemokine CX3CL1Disease Models, AnimalGanglia, SpinalHyperalgesiaMaleMiceMice, Inbred C57BLMice, KnockoutMicrogliaModels, AnatomicOsteoarthritis, KneePainRandom AllocationReference ValuesBiomarkersChemokine CX3CL1AllodyniaFractalkineMicrogliaMouseOsteoarthritisPain

Identifiers

PMID27646532
PMCPMC5354992
OpenAlexW2519381267

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.