Evidence map›Paper›PMID 25551381›Full record

ArticlePloS one2014

Midkine-deficiency delays chondrogenesis during the early phase of fracture healing in mice.

Melanie Haffner-Luntzer, Aline Heilmann, Anna Elise Rapp, Simon Beie, Thorsten Schinke, Michael Amling, Anita Ignatius, Astrid Liedert

Open access · goldAbstract read
In one paragraph

Article in PloS one, 2014. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 27 papers.

0numbers the graph read from it
0cells of the map it votes in
27citing papers in PubMed
2.0field-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

27 citing papers in PubMed, 43 citations in OpenAlex.

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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

8 authors at 1 institution in 1 country.

Melanie Haffner-LuntzerInstitute of Orthopaedic Research and Biomechanics, University Medical Center Ulm, Ulm, Germany.
Aline HeilmannInstitute of Orthopaedic Research and Biomechanics, University Medical Center Ulm, Ulm, Germany.
Anna Elise RappInstitute of Orthopaedic Research and Biomechanics, University Medical Center Ulm, Ulm, Germany.
Simon BeieInstitute of Orthopaedic Research and Biomechanics, University Medical Center Ulm, Ulm, Germany.
Thorsten SchinkeDepartment of Osteology and Biomechanics, University Medical Center Hamburg-Eppendorf, Hamburg, Germany.
Michael AmlingDepartment of Osteology and Biomechanics, University Medical Center Hamburg-Eppendorf, Hamburg, Germany.
Anita IgnatiusInstitute of Orthopaedic Research and Biomechanics, University Medical Center Ulm, Ulm, Germany.
Astrid LiedertInstitute of Orthopaedic Research and Biomechanics, University Medical Center Ulm, Ulm, Germany.
University Medical Center Hamburg-Eppendorf · DE

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

The growth and differentiation factor midkine (Mdk) plays an important role in bone development and remodeling. Mdk-deficient mice display a high bone mass phenotype when aged 12 and 18 months. Furthermore, Mdk has been identified as a negative regulator of mechanically induced bone formation and it induces pro-chondrogenic, pro-angiogenic and pro-inflammatory effects. Together with the finding that Mdk is expressed in chondrocytes during fracture healing, we hypothesized that Mdk could play a complex role in endochondral ossification during the bone healing process. Femoral osteotomies stabilized using an external fixator were created in wildtype and Mdk-deficient mice. Fracture healing was evaluated 4, 10, 21 and 28 days after surgery using 3-point-bending, micro-computed tomography, histology and immunohistology. We demonstrated that Mdk-deficient mice displayed delayed chondrogenesis during the early phase of fracture healing as well as significantly decreased flexural rigidity and moment of inertia of the fracture callus 21 days after fracture. Mdk-deficiency diminished beta-catenin expression in chondrocytes and delayed presence of macrophages during early fracture healing. We also investigated the impact of Mdk knockdown using siRNA on ATDC5 chondroprogenitor cells in vitro. Knockdown of Mdk expression resulted in a decrease of beta-catenin and chondrogenic differentiation-related matrix proteins, suggesting that delayed chondrogenesis during fracture healing in Mdk-deficient mice may be due to a cell-autonomous mechanism involving reduced beta-catenin signaling. Our results demonstrated that Mdk plays a crucial role in the early inflammation phase and during the development of cartilaginous callus in the fracture healing process.

Indexed as

Animalsbeta CateninCell DifferentiationCells, CulturedChondrogenesisCytokinesFracture HealingGene Knockdown TechniquesMiceMice, Inbred C57BLMidkineOsteogenesisRNA Interferencebeta CateninCytokinesMidkine

Identifiers

PMID25551381
PMCPMC4281158
OpenAlexW2069870933

What OpenQuestion holds

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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.