Evidence map›Paper›PMID 29070810›Full record

ArticleScientific reports2017

Complement receptors C5aR1 and C5aR2 act differentially during the early immune response after bone fracture but are similarly involved in bone repair.

Anna Kovtun, Stephanie Bergdolt, Yvonne Hägele, Rebekka Matthes, John D Lambris, Markus Huber-Lang, Anita Ignatius

Open access · goldAbstract read
In one paragraph

Article in Scientific reports, 2017. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 35 papers.

0numbers the graph read from it
0cells of the map it votes in
35citing papers in PubMed
3.4field-weighted citation impact, top 7% 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

35 citing papers in PubMed, 45 citations in OpenAlex.

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  12. Unveiling immune mechanisms and potential biomarkers in intervertebral disc degeneration through integrated analysis.Brazilian journal of medical and biological research = Revista brasileira de pesquisas medicas e biologica · 2025
    Article
  13. The Complement System.Advances in experimental medicine and biology · 2025
    Review
  14. The heart-bone connection: relationships between myocardial infarction and osteoporotic fracture.American journal of physiology. Heart and circulatory physiology · 2024
    Review
  15. Article
  16. Inhibition of C5AR1 impairs osteoclast mobilization and prevents bone loss.Molecular therapy : the journal of the American Society of Gene Therapy · 2023
    Article
  17. Article
  18. Review
  19. New insight of complement system in the process of vascular calcification.Journal of cellular and molecular medicine · 2023
    Review
  20. Article
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

7 authors at 3 institutions in 2 countries.

Anna KovtunInstitute of Orthopaedic Research and Biomechanics, Centre for Trauma Research Ulm, University of Ulm, D-89081, Ulm, Germany.
Stephanie BergdoltInstitute of Orthopaedic Research and Biomechanics, Centre for Trauma Research Ulm, University of Ulm, D-89081, Ulm, Germany.
Yvonne HägeleInstitute of Orthopaedic Research and Biomechanics, Centre for Trauma Research Ulm, University of Ulm, D-89081, Ulm, Germany.
Rebekka MatthesInstitute of Orthopaedic Research and Biomechanics, Centre for Trauma Research Ulm, University of Ulm, D-89081, Ulm, Germany.
John D LambrisDepartment of Pathology and Laboratory Medicine, University of Pennsylvania School of Medicine, Philadelphia, PA, 19104-6100, USA.
Markus Huber-LangInstitute of Clinical and Experimental Trauma Immunology (ITI), Ulm University Hospital, D-89081, Ulm, Germany.
Anita IgnatiusInstitute of Orthopaedic Research and Biomechanics, Centre for Trauma Research Ulm, University of Ulm, D-89081, Ulm, Germany. anita.ignatius@uni-ulm.de.
Universität Ulm · DEUniversity Hospital Ulm · DEUniversity of Pennsylvania · US

Funding

Role of complement in kidney disorders: from hemodialysis to transportationP01AI068730 · NIAID · UNIVERSITY OF PENNSYLVANIA · PI LAMBRIS, JOHN D · 2007 to 2018
$16.0M
NIAID NIH HHS P01 AI068730
6 · The paper itself

Abstract

Severely injured patients frequently suffer compromised fracture healing because of systemic post-traumatic inflammation. An important trigger of the posttraumatic immune response is the complement anaphylatoxin C5a, which acts via two receptors, C5aR1 and C5aR2, expressed on immune and bone cells. The blockade of C5a-mediated inflammation during the early inflammatory phase was demonstrated to improve fracture healing after severe injury. However, the distinct roles of the two complement receptors C5aR1 and C5aR2 in bone has to date not been studied. Here, we investigated bone turnover and regeneration in mice lacking either C5aR1 or C5aR2 in a model of isolated fracture and after severe injury, combining the fracture with an additional thoracic trauma. Both C5aR1

Indexed as

Disease Models, AnimalAnimalsFracture HealingFractures, BoneInflammationMaleMiceMice, Inbred C57BLMice, KnockoutOsteoblastsOsteogenesisReceptor, Anaphylatoxin C5aC5ar1 protein, mouseC5ar2 protein, mouseReceptor, Anaphylatoxin C5a

Identifiers

PMID29070810
PMCPMC5656620
OpenAlexW2765970569

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.