Evidence map›Paper›PMID 27923559›Full record

ArticleExperimental eye research2017

Nrf2 protects photoreceptor cells from photo-oxidative stress induced by blue light.

Wan-Ju Chen, Caiying Wu, Zhenhua Xu, Yoshiki Kuse, Hideaki Hara, Elia J Duh

Abstract read
In one paragraph

Article in Experimental eye research, 2017. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 37 papers.

0numbers the graph read from it
0cells of the map it votes in
37citing papers in PubMed
2.9field-weighted citation impact, top 9% 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

37 citing papers in PubMed, 73 citations in OpenAlex.

  1. Review
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  6. BlingLifeJournal of microbiology and biotechnology · 2025
    Article
  7. Review
  8. Antioxidants (Basel, Switzerland) · 2024
    Article
  9. Review
  10. Article
  11. Article
  12. Article
  13. Article
  14. Proteostasis in aging-associated ocular disease.Molecular aspects of medicine · 2022
    Review
  15. Review
  16. Article
  17. 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

6 authors at 2 institutions in 3 countries.

Wan-Ju ChenDepartment of Ophthalmology, Johns Hopkins University School of Medicine, Baltimore, MD, USA; Department of Ophthalmology, National Cheng Kung University Hospital, College of Medicine, National Cheng Kung University, Tainan, Taiwan.
Caiying WuDepartment of Ophthalmology, Johns Hopkins University School of Medicine, Baltimore, MD, USA.
Zhenhua XuDepartment of Ophthalmology, Johns Hopkins University School of Medicine, Baltimore, MD, USA.
Yoshiki KuseMolecular Pharmacology, Department of Biofunctional Evaluation, Gifu Pharmaceutical University, Gifu, Japan.
Hideaki HaraMolecular Pharmacology, Department of Biofunctional Evaluation, Gifu Pharmaceutical University, Gifu, Japan.
Elia J DuhDepartment of Ophthalmology, Johns Hopkins University School of Medicine, Baltimore, MD, USA. Electronic address: eduh@jhmi.edu.
Johns Hopkins University · USGifu Pharmaceutical University · JP

Funding

Wilmer Core Grant for Vision ResearchP30EY001765 · NEI · JOHNS HOPKINS UNIVERSITY · PI Jiang Qian · 1985 to 2026
$22.1M
Regulation of diabetic retinopathy by Nrf2R01EY022383 · NEI · JOHNS HOPKINS UNIVERSITY · PI DUH, ELIA J · 2012 to 2020
$3.8M
Role of Nrf2 in retinal vascularization and ROPR01EY022683 · NEI · JOHNS HOPKINS UNIVERSITY · PI DUH, ELIA J · 2012 to 2021
$3.6M
NEI NIH HHS P30 EY001765NEI NIH HHS R01 EY022383NEI NIH HHS R01 EY022683
6 · The paper itself

Abstract

Oxidative stress plays a key role in age-related macular degeneration and hereditary retinal degenerations. Light damage in rodents has been used extensively to model oxidative stress-induced photoreceptor degeneration, and photo-oxidative injury from blue light is particularly damaging to photoreceptors. The endogenous factors protecting photoreceptors from oxidative stress, including photo-oxidative stress, are continuing to be elucidated. In this study, we evaluated the effect of blue light exposure on photoreceptors and its relationship to Nrf2 using cultured murine photoreceptor (661W) cells. 661W cells were exposed to blue light at 2500 lux. Exposure to blue light for 6-24 h resulted in a significant increase in intracellular reactive oxygen species (ROS) and death of 661W cells in a time-dependent fashion. Blue light exposure resulted in activation of Nrf2, as indicated by an increase in nuclear translocation of Nrf2. This was associated with a significant induction of expression of Nrf2 as well as an array of Nrf2 target genes, including antioxidant genes, as indicated by quantitative reverse transcription PCR (qRT-PCR). In order to determine the functional role of Nrf2, siRNA-mediated knockdown studies were performed. Nrf2-knockdown in 661W cells resulted in significant exacerbation of blue light-induced reactive oxygen species levels as well as cell death. Taken together, these findings indicate that Nrf2 is an important endogenous protective factor against oxidative stress in photoreceptor cells. This suggests that drugs targeting Nrf2 could be considered as a neuroprotective strategy for photoreceptors in AMD and other retinal conditions.

Indexed as

ApoptosisGene Expression RegulationOxidative StressAnimalsBlotting, WesternCell CountCell LineLightMiceNeuroprotectionNF-E2-Related Factor 2Photoreceptor CellsReactive Oxygen SpeciesReal-Time Polymerase Chain ReactionRetinal DegenerationRNANfe2l2 protein, mouseNF-E2-Related Factor 2Reactive Oxygen SpeciesRNANeuroprotectionNrf2Oxidative stressPhotoreceptor

Identifiers

PMID27923559
PMCPMC6054877
OpenAlexW2560731750

What OpenQuestion holds

Textmetadata
LicenceTDM
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.