Evidence map›Paper›PMID 30995434›Full record

ArticleExperimental cell research2019

Restoring retinal neurovascular health via substance P.

Kepeng Ou, Sonja Mertsch, Sofia Theodoropoulou, Jiahui Wu, Jian Liu, David A Copland, Stefan Schrader, Lei Liu, Andrew D Dick

Erratum issuedOpen access · hybridAbstract read
In one paragraph

Article in Experimental cell research, 2019. The graph could read no effect estimate from its abstract, so it casts no vote on the map. An erratum has been issued. Cited by 15 papers.

0numbers the graph read from it
0cells of the map it votes in
15citing papers in PubMed
0.8field-weighted citation impact, top 27% 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

15 citing papers in PubMed, 21 citations in OpenAlex.

  1. Article
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  9. Article
  10. Review
  11. The innate immune system in diabetic retinopathy.Progress in retinal and eye research · 2021
    Review
  12. Article
  13. Article
  14. Article
  15. Neuroprotective Peptides in Retinal Disease.Journal of clinical medicine · 2019
    Review
4 · The record

Corrections and comments

5 · Who and what money

Authors and funding

9 authors at 4 institutions in 2 countries.

Kepeng OuLaboratory for Experimental Ophthalmology, University of Düsseldorf, Düsseldorf, Germany; Academic Unit of Ophthalmology, Bristol Medical School, University of Bristol, Bristol, UK.
Sonja MertschLaboratory for Experimental Ophthalmology, University of Düsseldorf, Düsseldorf, Germany; Department of Ophthalmology, Faculty of Medicine and Health Sciences, University of Oldenburg, Oldenburg, Germany.
Sofia TheodoropoulouAcademic Unit of Ophthalmology, Bristol Medical School, University of Bristol, Bristol, UK.
Jiahui WuAcademic Unit of Ophthalmology, Bristol Medical School, University of Bristol, Bristol, UK.
Jian LiuAcademic Unit of Ophthalmology, Bristol Medical School, University of Bristol, Bristol, UK.
David A CoplandAcademic Unit of Ophthalmology, Bristol Medical School, University of Bristol, Bristol, UK.
Stefan SchraderLaboratory for Experimental Ophthalmology, University of Düsseldorf, Düsseldorf, Germany; Department of Ophthalmology, Faculty of Medicine and Health Sciences, University of Oldenburg, Oldenburg, Germany.
Lei LiuAcademic Unit of Ophthalmology, Bristol Medical School, University of Bristol, Bristol, UK.
Andrew D DickAcademic Unit of Ophthalmology, Bristol Medical School, University of Bristol, Bristol, UK; National Institute for Health Research (NIHR) Biomedical Research Centre at Moorfields Eye Hospital and University College London Institute of Ophthalmology, London, UK. Electronic address: a.dick@bristol.ac.uk.
University of Bristol · GBCarl von Ossietzky Universität Oldenburg · DEHeinrich Heine University Düsseldorf · DEMoorfields Eye Hospital · GB

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Regulation of vascular permeability plays a major role in the pathophysiology of visually threatening conditions such as retinal vein occlusion and diabetic retinopathy. Principally, several factors such as vascular endothelial growth factor (VEGF), are up-regulated or induced in response to hypoxia thus adversely affecting the blood-retinal barrier (BRB), resulting in retinal edema and neovascularisation. Furthermore, current evidence supports a dysregulation of the inner retinal neural-vascular integrity as a critical factor driving retinal ganglion cell (RGC) death and visual loss. The principal objective of this study was to interrogate whether Substance P (SP), a constitutive neurotransmitter of amacrine and ganglion cells, may protect against N-methyl-d-aspartate (NMDA)-induced excitotoxic apoptosis of ganglion cells and VEGF-induced vessel leakage in the retina. Tight junctional protein expression and a Vascular Permeability Image Assay were used to determine vascular integrity in vitro. The protective effect of SP on RGC was established in ex vivo retinal explants and in vivo murine models. After NMDA administration, a reduction in TUNEL+ cells and a maintained number of Brn-3a+ cells were found, indicating an inhibition of RGC apoptosis mediated by SP. Additionally, SP maintained endothelial tight junctions and decreased VEGF-induced vascular permeability. In conclusion, administration of SP protects against NMDA apoptosis of RGC and VEGF-induced endothelial barrier breakdown.

Indexed as

AnimalsApoptosisBlood-Retinal BarrierCells, CulturedMiceMice, Inbred C57BLN-MethylaspartateRatsRats, WistarRetinaRetinal NeovascularizationSubstance PVascular Endothelial Growth FactorsN-MethylaspartateSubstance PVascular Endothelial Growth FactorsRetinal ganglion cellSubstance PVascular permeabilityZO-1

Identifiers

PMID30995434
PMCPMC6548993
OpenAlexW2938092348

What OpenQuestion holds

Textmetadata
LicenceCC BY-NC-ND
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.