Evidence map›Paper›PMID 26297615›Full record

ArticleExperimental eye research2015

Beneficial effects of fenofibric acid on overexpression of extracellular matrix components, COX-2, and impairment of endothelial permeability associated with diabetic retinopathy.

Sumon Roy, Dongjoon Kim, Cristina Hernández, Rafael Simó, Sayon Roy

Open access · greenAbstract read
In one paragraph

Article in Experimental eye research, 2015. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 23 papers.

0numbers the graph read from it
0cells of the map it votes in
23citing papers in PubMed
2.8field-weighted citation impact, top 11% 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

23 citing papers in PubMed, 32 citations in OpenAlex.

  1. Article
  2. Review
  3. Fenofibrate in ophthalmology: therapeutic efficacy and mechanisms.Journal of pharmacy & pharmaceutical sciences : a publication of the Canadian Society for Pharmaceutical Sciences, Societe canadienne des sciences pharmaceutiques · 2026
    Review
  4. Article
  5. Review
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  7. Article
  8. Article
  9. Review
  10. Article
  11. Neurovascular Impairment and Therapeutic Strategies in Diabetic Retinopathy.International journal of environmental research and public health · 2021
    Review
  12. Review
  13. Article
  14. Review
  15. Article
  16. Article
  17. Observational
  18. Article
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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

5 authors at 2 institutions in 2 countries.

Sumon RoyDepartment of Medicine, Boston University School of Medicine, Boston, MA, USA; Department of Ophthalmology, Boston University School of Medicine, Boston, MA, USA.
Dongjoon KimDepartment of Medicine, Boston University School of Medicine, Boston, MA, USA; Department of Ophthalmology, Boston University School of Medicine, Boston, MA, USA.
Cristina HernándezDiabetes and Metabolism Research Unit, Institut de Recerca, Hospital Universitari Vall d'Hebron, Universitat Autònoma de Barcelona (UAB), and CIBERDEM, Barcelona, Spain.
Rafael SimóDiabetes and Metabolism Research Unit, Institut de Recerca, Hospital Universitari Vall d'Hebron, Universitat Autònoma de Barcelona (UAB), and CIBERDEM, Barcelona, Spain.
Sayon RoyDepartment of Medicine, Boston University School of Medicine, Boston, MA, USA; Department of Ophthalmology, Boston University School of Medicine, Boston, MA, USA. Electronic address: sayon@bu.edu.
Boston University · USUniversitat Autònoma de Barcelona · ES

Funding

Role of intercellular communication in pathogenesis of diabetic retinopathyR01EY018218 · NEI · BOSTON MEDICAL CENTER · PI ROY, SAYON · 2009 to 2021
$2.7M
Role of Abnormal lysyl oxidase in the pathogenesis of diabetic retinopathyR01EY025528 · NEI · BOSTON MEDICAL CENTER · PI ROY, SAYON · 2015 to 2019
$2.2M
Thickening of basement membrane in diabetic retinopathyR01EY014702 · NEI · BOSTON UNIVERSITY MEDICAL CAMPUS · PI ROY, SAYON · 2004 to 2007
$866k
NEI NIH HHS EY014702NEI NIH HHS EY025528NEI NIH HHS R01 EY014702NEI NIH HHS R01 EY018218NEI NIH HHS R01 EY025528
6 · The paper itself

Abstract

In the Fenofibric Acid (FA) Intervention and Event Lowering in Diabetes (FIELD) study, FA, a lipid-lowering drug, has been shown to significantly reduce macular edema in diabetic patients. In the present study, we investigated whether FA reduces vascular permeability by inhibiting cyclooxygenase-2 (COX-2), a critical mediator of inflammation, and reducing overexpression of fibronectin (FN) and collagen IV (Coll IV), two basement membrane (BM) components upregulated in diabetic retinopathy. Rat retinal endothelial cells (RRECs) were grown in normal (N:5 mM glucose) or high glucose (HG:30 mM glucose) medium with or without FA for 7 days. Total protein isolated from these cells was assessed for FN, Coll IV, COX-2, and zonula occludens-1 (ZO-1), a tight junction protein, using Western blot analysis. In addition, the distribution and localization of ZO-1 was determined by immunofluorescence microscopy, and cell monolayer permeability was studied by in vitro permeability (IVP) assay. RRECs grown in HG medium showed significant increase in FN, Coll IV, and COX-2 expression (179%, 144%, 139% of N respectively), and a decrease in ZO-1 expression (48% of N) compared to those of N cells. Cells grown in HG medium supplemented with FA significantly reduced FN, Coll IV, and COX-2 expression by 47%, 32%, and 34% respectively, with concomitant increase in ZO-1 expression by 42%. In parallel studies, IVP assays showed a significant increase (139% of N) in cell monolayer permeability in RRECs grown in HG medium, which was significantly reduced with FA treatment. Additionally, immunostaining results indicated FA prevents HG-induced downregulation of ZO-1. The findings indicate that the beneficial effect of FA in reducing excess permeability is mediated, at least in part, by downregulating abnormal overexpression of BM components and inflammatory factors and preventing compromised tight junctions associated with diabetic retinopathy.

Indexed as

AnimalsAnticholesteremic AgentsBlotting, WesternCapillary PermeabilityCells, CulturedCollagen Type IVCyclooxygenase 2Diabetic RetinopathyEndothelium, VascularFenofibrateFibronectinsFluorescein-5-isothiocyanateFluorescent Antibody Technique, IndirectMicroscopy, FluorescenceRatsRetinal VesselsAnticholesteremic AgentsCollagen Type IVCyclooxygenase 2Fenofibratefenofibric acidFibronectinsFluorescein-5-isothiocyanatePtgs2 protein, ratTjp1 protein, ratZonula Occludens-1 ProteinCollagen type IVFenofibric acidFibronectinRetinal endothelial cells

Identifiers

PMID26297615
PMCPMC4646846
OpenAlexW1669512483

What OpenQuestion holds

Textmetadata
LicenceTDM
Read underepoch 390

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.