Evidence map›Paper›PMID 24160756›Full record

ArticleASN neuro2013

Pigment epithelium-derived factor reduces apoptosis and pro-inflammatory cytokine gene expression in a murine model of focal retinal degeneration.

Yujuan Wang, Preeti Subramanian, Defen Shen, Jingsheng Tuo, S Patricia Becerra, Chi-Chao Chan

Open access · goldAbstract read
In one paragraph

Article in ASN neuro, 2013. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 34 papers.

0numbers the graph read from it
0cells of the map it votes in
34citing papers in PubMed
5.7field-weighted citation impact, top 4% 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

34 citing papers in PubMed, 53 citations in OpenAlex.

  1. Review
  2. Review
  3. Article
  4. Article
  5. Review
  6. Article
  7. PEDF Deletion Induces Senescence and Defects in Phagocytosis in the RPE.International journal of molecular sciences · 2022
    Article
  8. Article
  9. Delivery Systems of Retinoprotective Proteins in the Retina.International journal of molecular sciences · 2021
    Review
  10. Review
  11. Article
  12. Article
  13. Review
  14. Article
  15. Article
  16. Photoreceptor degeneration in microphthalmia (Disease models & mechanisms · 2019
    Article
  17. Article
  18. Article
  19. Article
  20. A Novel Neuroprotective Small Molecule for Glial Cell Derived Neurotrophic Factor Induction and Photoreceptor Rescue.Journal of ocular pharmacology and therapeutics : the official journal of the Association for Ocular Pharmacology and Therapeutics · 2017
    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

6 authors at 1 institution in 1 country.

Yujuan Wang
Preeti Subramanian‡Section of Protein Structure and Function, Laboratory of Retinal Cell and Molecular Biology, National Eye Institute, National Institutes of Health, Bethesda, MD 20892, U.S.A.
Defen Shen*Immunopathology Section, Laboratory of Immunology, National Eye Institute, National Institutes of Health, Bethesda, MD 20892, U.S.A.
Jingsheng Tuo*Immunopathology Section, Laboratory of Immunology, National Eye Institute, National Institutes of Health, Bethesda, MD 20892, U.S.A.
S Patricia Becerra‡Section of Protein Structure and Function, Laboratory of Retinal Cell and Molecular Biology, National Eye Institute, National Institutes of Health, Bethesda, MD 20892, U.S.A.
Chi-Chao Chan*Immunopathology Section, Laboratory of Immunology, National Eye Institute, National Institutes of Health, Bethesda, MD 20892, U.S.A.
Sun Yat-sen University · CN

Funding

Histopathology CoreZICEY000461 · NEI · NATIONAL EYE INSTITUTE · PI SCHNEEWEIS, DAVID · 2009 to 2022
$7.7M
Molecular And Immunopathology Of Experimental And Clinical Ocular DiseasesZIAEY000222 · NEI · NATIONAL EYE INSTITUTE · PI CHAN, CHI-CHAO · 2009 to 2015
$7.2M
Age-Related Macular Degeneration: Genetic Variations and Animal ModelZIAEY000418 · NEI · NATIONAL EYE INSTITUTE · PI CHAN, CHI-CHAO · 2009 to 2015
$6.0M
Intramural NIH HHS
6 · The paper itself

Abstract

AMD (age-related macular degeneration) is a neurodegenerative disease causing irreversible central blindness in the elderly. Apoptosis and inflammation play important roles in AMD pathogenesis. PEDF (pigment epithelium-derived factor) is a potent neurotrophic and anti-inflammatory glycoprotein that protects the retinal neurons and photoreceptors against cell death caused by pathological insults. We studied the effects of PEDF on focal retinal lesions in DKO rd8 (Ccl2(-/-)/Cx3cr1(-/-) on C57BL/6N [Crb1(rd8)]) mice, a model for progressive, focal rd (retinal degeneration). First, we found a significant decrease in PEDF transcript expression in DKO rd8 mouse retina and RPE (retinal pigment epithelium) than WT (wild-type, C57BL/6N). Next, cultured DKO rd8 RPE cells secreted lower levels of PEDF protein in the media than WT. Then the right eyes of DKO rd8 mice were injected intravitreously with recombinant human PEDF protein (1 μg), followed by a subconjunctival injection of PEDF (3 μg) 4 weeks later. The untreated left eyes served as controls. The effect of PEDF was assessed by fundoscopy, ocular histopathology and A2E {[2,6-dimethyl-8-(2,6,6-trimethyl-1-cyclohexen-1-yl)-1E,3E,5E,7E-octatetra-enyl]-1-(2-hydroxyethyl)-4-[4-methyl-6(2,6,6-trimethyl-1-cyclohexen-1-yl) 1E,3E,5E,7E-hexatrienyl]-pyridinium} levels, as well as apoptotic and inflammatory molecules. The PEDF-treated eyes showed slower progression or attenuation of the focal retinal lesions, fewer and/or smaller photoreceptor and RPE degeneration, and significantly lower A2E, relative to the untreated eyes. In addition, lower expression of apoptotic and inflammatory molecules were detected in the PEDF-treated than untreated eyes. Our results establish that PEDF potently stabilizes photoreceptor degeneration via suppression of both apoptotic and inflammatory pathways. The multiple beneficial effects of PEDF represent a novel approach for potential AMD treatment.

Indexed as

AnimalsAnti-Inflammatory AgentsApoptosisCells, CulturedChemokine CCL2CX3C Chemokine Receptor 1CytokinesDisease Models, AnimalEpithelial CellsEye ProteinsGene Expression RegulationHumansMiceMice, Inbred C57BLMice, TransgenicMutationA2-E (N-retinylidene-N-retinylethanolamine)Anti-Inflammatory AgentsCcl2 protein, mouseChemokine CCL2Crb1 protein, mouseCX3C Chemokine Receptor 1Cx3cr1 protein, mouseCytokinesEye ProteinsNerve Growth FactorsNerve Tissue ProteinsPigment Epithelium-Derived FactorPyridinium CompoundsReceptors, ChemokineRetinoidsSerpins

Identifiers

PMID24160756
PMCPMC3840469
OpenAlexW2113743403

What OpenQuestion holds

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LicenceCC BY
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.