Evidence map›Paper›PMID 32906119›Full record

ArticleJournal of innate immunity2021

Different Innate Immune Responses in BALB/c and C57BL/6 Strains following Corneal Transplantation.

Tim Bleul, Xinyu Zhuang, Antonia Hildebrand, Clemens Lange, Daniel Böhringer, Günther Schlunck, Thomas Reinhard, Thabo Lapp

Open access · goldAbstract readComparative Study
In one paragraph

Article in Journal of innate immunity, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 29 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
29citing papers in PubMed, 1 pooled it
3.0field-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

29 citing papers in PubMed, 1 synthesis or guideline pooled it, 47 citations in OpenAlex.

  1. Pooled it
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  15. Animal Models in Eye Research: Focus on Corneal Pathologies.International journal of molecular sciences · 2023
    Review
  16. Article
  17. Review
  18. Macrophages in immunoregulation and therapeutics.Signal transduction and targeted therapy · 2023
    Review
  19. Experimental animal models of chronic inflammation.Current research in immunology · 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

8 authors at 2 institutions in 1 country.

Tim BleulEye Center, Medical Center, Faculty of Medicine, University of Freiburg, Freiburg im Breisgau, Germany.
Xinyu ZhuangEye Center, Medical Center, Faculty of Medicine, University of Freiburg, Freiburg im Breisgau, Germany.
Antonia HildebrandEye Center, Medical Center, Faculty of Medicine, University of Freiburg, Freiburg im Breisgau, Germany.
Clemens LangeEye Center, Medical Center, Faculty of Medicine, University of Freiburg, Freiburg im Breisgau, Germany.
Daniel BöhringerEye Center, Medical Center, Faculty of Medicine, University of Freiburg, Freiburg im Breisgau, Germany.
Günther SchlunckEye Center, Medical Center, Faculty of Medicine, University of Freiburg, Freiburg im Breisgau, Germany.
Thomas ReinhardEye Center, Medical Center, Faculty of Medicine, University of Freiburg, Freiburg im Breisgau, Germany.
Thabo LappEye Center, Medical Center, Faculty of Medicine, University of Freiburg, Freiburg im Breisgau, Germany, thabo.lapp@uniklinik-freiburg.de.
University of Freiburg · DEUniversity Medical Center Freiburg · DE

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

purposeTo investigate immunological differences and the role of CD38+/F4/80 + M1 macrophages in C57BL/6J- and BALB/c-recipient mouse corneal transplantation models.

methodsAllogeneic transplantation was performed crosswise in BALB/c mice and C57BL/6J mice; syngeneic transplantation was performed in both strains. Anterior chamber depth (ACD) was measured before and central corneal thickness (CCT) was measured both before and after transplantation. In vivo graft rejection was monitored using anterior eye segment optical coherence tomography (ASOCT) evaluating the CCT and grading of corneal oedema using a well-established clinical score (CS). Histology of corneal grafts was performed 18 or 21 days after surgery. Immunohistochemistry with anti-F4/80 antibody and anti-CD38 antibody was used for detecting M1 macrophages within the grafts.

resultsHigh CS and CCT values after allogeneic transplantation persisted in both BALB/c (n = 18) and C57BL/6J recipients (n = 20). After syngeneic transplantation, CS and CCT values increased in both models in the early phase after surgery due to the surgical trauma. Surprisingly, in the syngeneic C57BL/6J model, high CCT values persisted. Furthermore, anterior synechiae developed in C57BL/6 recipients after both syngeneic and allogeneic transplantation, whereas BALB/c recipients showed almost no synechiae - even though C57/BL6J animals tended to have a deeper anterior chamber (281 ± 11 pixels [mean ± SD]) compared with BALB/c animals of the same age (270 ± 9 pixels [mean ± SD]). Immunohistochemistry revealed numerous CD38+/F4/80 + M1 macrophages in grafts of C57BL/6J recipients following both syngeneic and allogeneic transplantation. However, in BALB/c-recipient mice only sparse M1 macrophages were detectable (CD38 + M1 macrophages relative to all F4/80 + cells: 75 vs. 17% [after allogeneic transplantation] and 66 vs. 17% [after syngeneic transplantation]; p < 0.05).

conclusionsAllogeneic corneal transplants are rejected in BALB/c as well as C57BL/6J mice, but tissue alterations with anterior synechiae are more pronounced in C57BL/6J recipients. Following syngeneic transplantation, C57BL/6J-recipient animals show a persistent graft swelling with increased numbers of CD38+/F4/80 + M1 macrophages in grafted tissue, in contrast to the common model using BALB/c-recipient mice. Our data strongly suggest that strain-dependent differences convey different innate immune responses in BALB/c and C57BL/6J strains. Accordingly, in murine keratoplasty experiments, the mouse line of both donor and recipient animals must be carefully considered. C57BL/6J-recipient mice might be particularly suited to study corneal graft rejection in a clinical setting considered "high risk."

Indexed as

Corneal TransplantationADP-ribosyl Cyclase 1AnimalsAnterior Eye SegmentAntigens, DifferentiationCell MovementGenetic BackgroundGenetic Predisposition to DiseaseGraft RejectionImmunity, InnateMacrophage ActivationMacrophagesMiceMice, Inbred BALB CMice, Inbred C57BLTomography, Optical CoherenceADP-ribosyl Cyclase 1Antigens, Differentiationmonocyte-macrophage differentiation antigenBALB/cC57BL/6Corneal graft rejectionKeratoplastyMacrophage

Identifiers

PMID32906119
PMCPMC7879253
OpenAlexW3084160972

What OpenQuestion holds

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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.