Evidence map›Paper›PMID 27141814›Full record

ArticleBMC musculoskeletal disorders2016

The influence of calcitonin gene-related peptide on markers of bone metabolism in MG-63 osteoblast-like cells co-cultured with THP-1 macrophage-like cells under virtually osteolytic conditions.

Heidrun Jablonski, Heike Rekasi, Marcus Jäger

Open access · goldAbstract read
In one paragraph

Article in BMC musculoskeletal disorders, 2016. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 10 papers.

0numbers the graph read from it
0cells of the map it votes in
10citing papers in PubMed
1.9field-weighted citation impact, top 15% 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

10 citing papers in PubMed, 17 citations in OpenAlex.

  1. Effects of Thermal Environment on Bone Microenvironment: A Narrative Review.International journal of molecular sciences · 2025
    Review
  2. Crosstalk between Bone and Nerves within Bone.Advanced science (Weinheim, Baden-Wurttemberg, Germany) · 2021
    Review
  3. Review
  4. Review
  5. The Effects of Biomaterial Implant Wear Debris on Osteoblasts.Frontiers in cell and developmental biology · 2020
    Review
  6. Article
  7. Article
  8. Article
  9. Article
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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

3 authors at 1 institution in 1 country.

Heidrun JablonskiUniversity Hospital Essen, Department of Orthopedic and Trauma Surgery, University of Duisburg-Essen, Hufelandstrasse 55, Essen, 45147, Germany. heidrun.jablonski@uk-essen.de.
Heike RekasiUniversity Hospital Essen, Department of Orthopedic and Trauma Surgery, University of Duisburg-Essen, Hufelandstrasse 55, Essen, 45147, Germany.
Marcus JägerUniversity Hospital Essen, Department of Orthopedic and Trauma Surgery, University of Duisburg-Essen, Hufelandstrasse 55, Essen, 45147, Germany.
University of Duisburg-Essen · DE

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundThe neuropeptide calcitonin gene-related peptide (CGRP) has been described to have an inhibitory effect on endotoxin- and wear particle-induced inflammation in the early stages of periprosthetic osteolysis. In the present study, the crosstalk between immune cells and osteoblasts in osteolytic conditions treated with CGRP has been analyzed to evaluate whether the anti-inflammatory properties of the peptide also have a beneficial, i.e. an anti-resorptive and osteo-anabolic impact on bone metabolism.

methodsMG-63 osteoblast-like cells were co-cultured with THP-1 macrophage-like cells stimulated with either ultra-high molecular weight polyethylene (UHMWPE) particles or different concentrations of bacterial lipopolysaccharides (LPS) and simultaneously treated with CGRP. Inflammation was monitored in terms of measuring the levels of tumor necrosis factor (TNF)-α secretion. Furthermore, the production of the osteoblast markers osteoprotegerin (OPG), receptor activator of nuclear factor κB ligand (RANKL), alkaline phosphatase (ALP) and osteopontin (OPN) was quantified. Also, ALP enzymatic activity was measured.

resultsStimulation of co-cultured THP-1 macrophages with either high levels of LPS or UHMWPE induced the secretion of TNF-α which could be inhibited by CGRP to a great extent. However, no remarkable changes in the OPG/RANKL ratio or bone ALP activity were observed. Interestingly, OPN was exclusively produced by THP-1 cells, thus acting as a marker of inflammation. In addition, TNF-α production in THP-1 single cell cultures was found to be considerably higher than in co-cultured cells.

conclusionsIn the co-culture system used in the present study, no obvious relation between inflammation, its mitigation by CGRP, and the modulation of bone metabolism became evident. Nonetheless, the results suggest that during the onset of periprosthetic osteolysis the focus might lie on the modulation of inflammatory reactions. Possibly, implant-related inflammation might merely have an impact on osteoclast differentiation rather than on the regulation of osteoblast activity.

Indexed as

BiomarkersBone DensityBone RemodelingCalcitonin Gene-Related PeptideCell Line, TumorCell SurvivalCoculture TechniquesHumansInflammation MediatorsMacrophagesOsteoblastsOsteolysisTransforming Growth Factor alphaBiomarkersCalcitonin Gene-Related PeptideInflammation MediatorsTransforming Growth Factor alphaBone metabolismCGRPCo-cultureInflammationLPSMG-63 osteoblastsOsteolysisParticlesTHP-1 macrophages

Identifiers

PMID27141814
PMCPMC4855322
OpenAlexW2347169975

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.