Evidence map›Paper›PMID 21051716›Full record

ArticleInvestigative ophthalmology & visual science2011

The oral iron chelator deferiprone protects against iron overload-induced retinal degeneration.

Majda Hadziahmetovic, Ying Song, Natalie Wolkow, Jared Iacovelli, Steven Grieco, Jennifer Lee, Arkady Lyubarsky, Domenico Pratico, John Connelly, Michael Spino and 2 more

Open access · bronzeAbstract read
In one paragraph

Article in Investigative ophthalmology & visual science, 2011. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 76 papers.

0numbers the graph read from it
0cells of the map it votes in
76citing papers in PubMed
7.4field-weighted citation impact, top 3% 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

76 citing papers in PubMed, 116 citations in OpenAlex.

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  13. Different Therapeutic Approaches for Dry and Wet AMD.International journal of molecular sciences · 2024
    Review
  14. Article
  15. Retinal toxicity of heavy metals and its involvement in retinal pathology.Food and chemical toxicology : an international journal published for the British Industrial Biological Research Association · 2024
    Review
  16. Review
  17. Article
  18. Review
  19. Article
  20. Article

16 more citing papers are in PubMed but not listed here.

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

12 authors at 3 institutions in 1 country.

Majda HadziahmetovicF. M. Kirby Center for Molecular Ophthalmology, Scheie Eye Institute, University of Pennsylvania, Philadelphia, Pennsylvania, USA.
Ying Song
Natalie Wolkow
Jared Iacovelli
Steven Grieco
Jennifer Lee
Arkady Lyubarsky
Domenico Pratico
John Connelly
Michael Spino
Z Leah Harris
Joshua L Dunaief
Penn Presbyterian Medical Center · USUniversity of Pennsylvania · USTemple University · US

Funding

Scientific TransparencyP30EY001583 · NEI · UNIVERSITY OF PENNSYLVANIA · PI Gui-shuang Ying · 1985 to 2026
$19.5M
Retinal Iron Transport in Health and DiseaseR01EY015240 · NEI · UNIVERSITY OF PENNSYLVANIA · PI JOSHUA L DUNAIEF · 2004 to 2026
$10.4M
Hephaestin's role in retinal iron homeostasis and retinal healthF30AG037289 · NIA · UNIVERSITY OF PENNSYLVANIA · PI WOLKOW, NATALIE · 2010 to 2012
$112k
NEI NIH HHS P30 EY001583NEI NIH HHS R01 EY015240NIA NIH HHS F30 AG037289
6 · The paper itself

Abstract

purposeIron-induced oxidative stress may exacerbate age-related macular degeneration (AMD). Ceruloplasmin/Hephaestin double-knockout (DKO) mice with age-dependent retinal iron accumulation and some features of AMD were used to test retinal protection by the oral iron chelator deferiprone (DFP).

methodsCultured retinal pigment epithelial (ARPE-19) cells and mice were treated with DFP. Transferrin receptor mRNA (Tfrc), an indicator of iron levels, was quantified by qPCR. In mice, retinal oxidative stress was assessed by mass spectrometry, and degeneration by histology and electroretinography.

resultsDFP at 60 μM decreased labile iron in ARPE-19 cells, increasing Tfrc and protecting 70% of cells against a lethal dose of H(2)O(2). DFP 1 mg/mL in drinking water increased retinal Tfrc mRNA 2.7-fold after 11 days and also increased transferrin receptor protein. In DKOs, DFP over 8 months decreased retinal iron levels to 72% of untreated mice, diminished retinal oxidative stress to 70% of the untreated level, and markedly ameliorated retinal degeneration. DFP was not retina toxic in wild-type (WT) or DKO mice, as assessed by histology and electroretinography.

conclusionsOral DFP was not toxic to the mouse retina. It diminished retinal iron levels and oxidative stress and protected DKO mice against iron overload-induced retinal degeneration. Further testing of DFP for retinal disease involving oxidative stress is warranted.

Indexed as

Administration, OralAnimalsAntigens, CDCell DeathCell LineCeruloplasminDeferiproneElectroretinographyFemaleFluorescent Antibody Technique, IndirectHumansHydrogen PeroxideIron Chelating AgentsIron OverloadMaleMass SpectrometryAntigens, CDCD71 antigenCeruloplasminDeferiproneHydrogen PeroxideIron Chelating AgentsPyridonesReceptors, TransferrinRNA, MessengerTfrc protein, mouse

Identifiers

PMID21051716
PMCPMC4183363
OpenAlexW2052481402

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.