Evidence map›Paper›PMID 35271829›Full record

ArticleExperimental eye research2022

Conditional knockout of hephaestin in the neural retina disrupts retinal iron homeostasis.

Kevin R Zhang, Bailey Baumann, Ying Song, Jacob Sterling, Elizabeth A Erler, Samyuktha Guttha, Zbynek Kozmik, Joshua L Dunaief

Open access · greenAbstract read
In one paragraph

Article in Experimental eye research, 2022. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 5 papers.

0numbers the graph read from it
0cells of the map it votes in
5citing papers in PubMed
0.3field-weighted citation impact, top 47% 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

5 citing papers in PubMed, 3 citations in OpenAlex.

  1. Review
  2. Activation of GSDME by all-International journal of biological sciences · 2025
    Article
  3. Article
  4. Article
  5. Review
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

8 authors at 2 institutions in 3 countries.

Kevin R ZhangF.M. Kirby Center for Molecular Ophthalmology, Scheie Eye Institute, Perelman School of Medicine at the University of Pennsylvania, 305 Stellar-Chance Laboratory, 422 Curie Blvd., Philadelphia, PA, 19104, USA. Electronic address: Kevin.Zhang3@pennmedicine.upenn.edu.
Bailey BaumannF.M. Kirby Center for Molecular Ophthalmology, Scheie Eye Institute, Perelman School of Medicine at the University of Pennsylvania, 305 Stellar-Chance Laboratory, 422 Curie Blvd., Philadelphia, PA, 19104, USA. Electronic address: bbaum@vet.upenn.edu.
Ying SongF.M. Kirby Center for Molecular Ophthalmology, Scheie Eye Institute, Perelman School of Medicine at the University of Pennsylvania, 305 Stellar-Chance Laboratory, 422 Curie Blvd., Philadelphia, PA, 19104, USA. Electronic address: yingsong@pennmedicine.upenn.edu.
Jacob SterlingF.M. Kirby Center for Molecular Ophthalmology, Scheie Eye Institute, Perelman School of Medicine at the University of Pennsylvania, 305 Stellar-Chance Laboratory, 422 Curie Blvd., Philadelphia, PA, 19104, USA. Electronic address: jacob.sterling@pennmedicine.upenn.edu.
Elizabeth A ErlerF.M. Kirby Center for Molecular Ophthalmology, Scheie Eye Institute, Perelman School of Medicine at the University of Pennsylvania, 305 Stellar-Chance Laboratory, 422 Curie Blvd., Philadelphia, PA, 19104, USA. Electronic address: elizabeth.erler@pennmedicine.upenn.edu.
Samyuktha GutthaF.M. Kirby Center for Molecular Ophthalmology, Scheie Eye Institute, Perelman School of Medicine at the University of Pennsylvania, 305 Stellar-Chance Laboratory, 422 Curie Blvd., Philadelphia, PA, 19104, USA. Electronic address: samyukthag@gmail.com.
Zbynek KozmikInstitute of Molecular Genetics, Academy of Sciences of the Czech Republic, Prague, ASCR, v. v. i. Vídeňská 1083, 142 20, Prague 4, Czech Republic. Electronic address: zbynek.kozmik@img.cas.cz.
Joshua L DunaiefF.M. Kirby Center for Molecular Ophthalmology, Scheie Eye Institute, Perelman School of Medicine at the University of Pennsylvania, 305 Stellar-Chance Laboratory, 422 Curie Blvd., Philadelphia, PA, 19104, USA. Electronic address: jdunaief@pennmedicine.upenn.edu.
Penn Presbyterian Medical Center · USCzech Academy of Sciences · CZ

Funding

Scientific TransparencyP30EY001583 · NEI · UNIVERSITY OF PENNSYLVANIA · PI CLAIRE H MITCHELL · 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
RESEARCH ON NORMAL AND ABNORMAL MECHANISMS OF VISIONST32EY007035 · NEI · UNIVERSITY OF PENNSYLVANIA · PI Diego Contreras, Jessica I.W. Morgan · 1985 to 2026
$4.9M
IL-1Beta-Induced Retinal Iron Accumulation in Age-Related Macular DegenerationF30EY032339 · NEI · UNIVERSITY OF PENNSYLVANIA · PI STERLING, JACOB KHAN · 2021 to 2023
$121k
NEI NIH HHS F30 EY032339NEI NIH HHS P30 EY001583NEI NIH HHS R01 EY015240NEI NIH HHS T32 EY007035
6 · The paper itself

Abstract

Iron accumulation has been implicated in degenerative retinal diseases. It can catalyze the production of damaging reactive oxygen species. Previous work has demonstrated iron accumulation in multiple retinal diseases, including age-related macular degeneration and diabetic retinopathy. In mice, systemic knockout of the ferroxidases ceruloplasmin (Cp) and hephaestin (Heph), which oxidize iron, results in retinal iron accumulation and iron-induced degeneration. To determine the role of Heph in the retina, we generated a neural retina-specific Heph knockout on a background of systemic Cp knockout. This resulted in elevated neural retina iron. Conversely, retinal ganglion cells had elevated transferrin receptor and decreased ferritin, suggesting diminished iron levels. The retinal degeneration observed in systemic Cp

Indexed as

Macular DegenerationMembrane ProteinsAnimalsCeruloplasminHomeostasisIronMiceMice, KnockoutRetinaCeruloplasminIronMembrane ProteinsAge-related macular degenerationCeruloplasminFerrousHephaestinIronRetina

Identifiers

PMID35271829
PMCPMC9050911
OpenAlexW4220739760

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.