Evidence map›Paper›PMID 37275893›Full record

ArticleFrontiers in immunology2023

The complement receptor C5aR2 regulates neutrophil activation and function contributing to neutrophil-driven epidermolysis bullosa acquisita.

Daniel L Seiler, Katja H Kähler, Marie Kleingarn, Christian D Sadik, Katja Bieber, Jörg Köhl, Ralf J Ludwig, Christian M Karsten

Open access · goldAbstract read
In one paragraph

Article in Frontiers in immunology, 2023. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 7 papers.

0numbers the graph read from it
0cells of the map it votes in
7citing papers in PubMed
2.0field-weighted citation impact, top 14% 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

7 citing papers in PubMed, 8 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 3 institutions in 2 countries.

Daniel L SeilerInstitute for Systemic Inflammation Research (ISEF), University of Lübeck, Lübeck, Germany.
Katja H KählerInstitute for Systemic Inflammation Research (ISEF), University of Lübeck, Lübeck, Germany.
Marie KleingarnInstitute for Systemic Inflammation Research (ISEF), University of Lübeck, Lübeck, Germany.
Christian D SadikCenter for Research on Inflammation of the Skin (CRIS), University of Lübeck, Lübeck, Germany.
Katja BieberCenter for Research on Inflammation of the Skin (CRIS), University of Lübeck, Lübeck, Germany.
Jörg KöhlInstitute for Systemic Inflammation Research (ISEF), University of Lübeck, Lübeck, Germany.
Ralf J LudwigCenter for Research on Inflammation of the Skin (CRIS), University of Lübeck, Lübeck, Germany.
Christian M KarstenInstitute for Systemic Inflammation Research (ISEF), University of Lübeck, Lübeck, Germany.
University of Lübeck · DEUniversity Hospital Schleswig-Holstein · DECincinnati Children's Hospital Medical Center · US

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Introduction: The function of the second receptor for the complement cleavage product C5a, C5aR2, is poorly understood and often neglected in the immunological context. Using mice with a global deficiency of Methods: LysM-specific deletion of Results: We confirm the successful deletion of C5aR2 at both the genetic and protein levels in neutrophils. The mice appeared healthy and the expression of C5aR1 in bone marrow and blood neutrophils was not negatively affected by LysM-specific deletion of C5aR2. Using the antibody transfer mouse model of EBA, we found that the absence of Discussion: Overall, with the data presented here, we confirm and extend our previous findings and show that C5aR2 in neutrophils regulates their activation and function in response to C5a by potentially affecting the expression of Fcγ receptors and CD11b. Thus, C5aR2 regulates the finely tuned interaction network between immune complexes, Fcγ receptors, CD11b, and C5aR1 that is important for neutrophil recruitment and sustained activation. This underscores the importance of C5aR2 in the pathogenesis of neutrophil-mediated autoimmune diseases.

Indexed as

Autoimmune DiseasesEpidermolysis Bullosa AcquisitaAnimalsComplement C5aMiceNeutrophil ActivationNeutrophilsReceptor, Anaphylatoxin C5aReceptors, ComplementReceptors, IgGC5ar2 protein, mouseComplement C5aReceptor, Anaphylatoxin C5aReceptors, ComplementReceptors, IgGC5aC5aR2CD11bEBAFcgRIIBFcγ receptor (FcγR)Mac-1neutrophil

Identifiers

PMID37275893
PMCPMC10235453
OpenAlexW4377097999

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Registered trials

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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.