Evidence map›Paper›PMID 31391341›Full record

ArticleJCI insight2019

Dysregulated claudin-5 cycling in the inner retina causes retinal pigment epithelial cell atrophy.

Natalie Hudson, Lucia Celkova, Alan Hopkins, Chris Greene, Federica Storti, Ema Ozaki, Erin Fahey, Sofia Theodoropoulou, Paul F Kenna, Marian M Humphries and 10 more

Open access · goldAbstract read
In one paragraph

Article in JCI insight, 2019. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 48 papers.

0numbers the graph read from it
0cells of the map it votes in
48citing papers in PubMed
2.6field-weighted citation impact, top 10% 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

48 citing papers in PubMed, 72 citations in OpenAlex.

  1. Article
  2. Article
  3. Article
  4. Article
  5. Review
  6. Selective deletion ofiScience · 2026
    Article
  7. Review
  8. Review
  9. Dynamic Inner Blood Retina Barrier Disruption in Retinitis Pigmentosa.Investigative ophthalmology & visual science · 2025
    Article
  10. Automated Assessment of Retinal Vascular Integrity Across Species.Investigative ophthalmology & visual science · 2025
    Article
  11. Review
  12. Review
  13. Review
  14. Review
  15. Review
  16. Key Claudins at the Blood-Retina Barriers.Advances in experimental medicine and biology · 2025
    Review
  17. Review
  18. Article
  19. Article
  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

20 authors at 6 institutions in 4 countries.

Natalie HudsonSmurfit Institute of Genetics, Trinity College Dublin, Dublin, Ireland.
Lucia CelkovaSmurfit Institute of Genetics, Trinity College Dublin, Dublin, Ireland.
Alan HopkinsSmurfit Institute of Genetics, Trinity College Dublin, Dublin, Ireland.
Chris GreeneSmurfit Institute of Genetics, Trinity College Dublin, Dublin, Ireland.
Federica StortiLab for Retinal Cell Biology, Department of Ophthalmology, University of Zürich, Zürich, Switzerland.
Ema OzakiSchool of Medicine, Trinity College Dublin, Dublin, Ireland.
Erin FaheySchool of Medicine, Trinity College Dublin, Dublin, Ireland.
Sofia TheodoropoulouAcademic Unit of Ophthalmology, School of Clinical Sciences, University of Bristol, Bristol, United Kingdom.
Paul F KennaSmurfit Institute of Genetics, Trinity College Dublin, Dublin, Ireland.
Marian M HumphriesSmurfit Institute of Genetics, Trinity College Dublin, Dublin, Ireland.
Annie M CurtisDepartment of Molecular and Cellular Therapeutics, Royal College of Surgeons in Ireland, Dublin, Ireland.
Eleanor DemmonsRxGen, Hamden, Connecticut, USA.
Akeem BrowneRxGen, Hamden, Connecticut, USA.
Shervin LiddieRxGen, Hamden, Connecticut, USA.
Matthew S LawrenceRxGen, Hamden, Connecticut, USA.
Christian GrimmLab for Retinal Cell Biology, Department of Ophthalmology, University of Zürich, Zürich, Switzerland.
Mark T CahillThe Research Foundation, Royal Victoria Eye and Ear Hospital, Dublin, Ireland.
Pete HumphriesSmurfit Institute of Genetics, Trinity College Dublin, Dublin, Ireland.
Sarah L DoyleSchool of Medicine, Trinity College Dublin, Dublin, Ireland.
Matthew CampbellSmurfit Institute of Genetics, Trinity College Dublin, Dublin, Ireland.
Trinity College Dublin · IEGastroenterology Center of Connecticut · USUniversity of Zurich · CHRoyal College of Surgeons in Ireland · IERoyal Victoria Eye and Ear Hospital · IEUniversity of Bristol · GB

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Age-related macular degeneration (AMD) is the leading cause of central retinal vision loss worldwide, with an estimated 1 in 10 people over the age of 55 showing early signs of the condition. There are currently no forms of therapy available for the end stage of dry AMD, geographic atrophy (GA). Here, we show that the inner blood-retina barrier (iBRB) is highly dynamic and may play a contributory role in GA development. We have discovered that the gene CLDN5, which encodes claudin-5, a tight junction protein abundantly expressed at the iBRB, is regulated by BMAL1 and the circadian clock. Persistent suppression of claudin-5 expression in mice exposed to a cholesterol-enriched diet induced striking retinal pigment epithelium (RPE) cell atrophy, and persistent targeted suppression of claudin-5 in the macular region of nonhuman primates induced RPE cell atrophy. Moreover, fundus fluorescein angiography in human and nonhuman primate subjects showed increased retinal vascular permeability in the evening compared with the morning. These findings implicate an inner retina-derived component in the early pathophysiological changes observed in AMD, and we suggest that restoring the integrity of the iBRB may represent a novel therapeutic target for the prevention and treatment of GA secondary to dry AMD.

Indexed as

AnimalsARNTL Transcription FactorsBlood-Retinal BarrierCapillary PermeabilityChlorocebus aethiopsCircadian ClocksClaudin-5Diet, High-FatDisease Models, AnimalFluorescein AngiographyFundus OculiGene Knockdown TechniquesGeographic AtrophyHealthy VolunteersHumansMagnetic Resonance ImagingARNTL Transcription FactorsBmal1 protein, mouseClaudin-5Cldn5 protein, mouseRNA, Small InterferingMolecular pathologyOphthalmologyRetinopathyTight junctionsVascular Biology

Identifiers

PMID31391341
PMCPMC6693834
OpenAlexW2965152158

What OpenQuestion holds

Textmetadata
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.