Evidence map›Paper›PMID 22915031›Full record

ArticleInvestigative ophthalmology & visual science2012

Impacts of hypoxia-inducible factor-1 knockout in the retinal pigment epithelium on choroidal neovascularization.

Mingkai Lin, Yang Hu, Ying Chen, Kevin K Zhou, Ji Jin, Meili Zhu, Yun-Zheng Le, Jian Ge, Jian-Xing Ma

Open access · bronzeAbstract read
In one paragraph

Article in Investigative ophthalmology & visual science, 2012. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 41 papers.

0numbers the graph read from it
0cells of the map it votes in
41citing papers in PubMed
3.5field-weighted citation impact, top 8% 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

41 citing papers in PubMed, 62 citations in OpenAlex.

  1. Review
  2. Article
  3. Article
  4. Review
  5. Article
  6. Article
  7. Article
  8. Recent Insights into Roles of Hypoxia-Inducible Factors in Retinal Diseases.International journal of molecular sciences · 2024
    Review
  9. Article
  10. 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

9 authors at 2 institutions in 1 country.

Mingkai LinDepartment of Physiology, The University of Oklahoma Health Sciences Center, Oklahoma City, Oklahoma, USA.
Yang Hu
Ying Chen
Kevin K Zhou
Ji Jin
Meili Zhu
Yun-Zheng Le
Jian Ge
Jian-Xing Ma
University of Oklahoma Health Sciences Center · USState Key Laboratory of Ophthalmology

Funding

THE ROLE OF COMPLEX 1 IN MITOCHONDRIAL DYSFUNCTION & FREE RADICAL PROD IN TYPE 1P20RR024215 · NCRR · UNIVERSITY OF OKLAHOMA HLTH SCIENCES CTR · PI SHORT, KEVIN R. · 2007 to 2011
$11.7M
Project 5 VEGF Signaling in PhotoreceptorsP20GM104934 · NIGMS · UNIVERSITY OF OKLAHOMA HLTH SCIENCES CTR · PI LE, YUN ZHENG · 2012 to 2016
$10.8M
A new pathogenic mechanism for diabetic retinopathyR01EY019309 · NEI · WAKE FOREST UNIVERSITY HEALTH SCIENCES · PI Jian-Xing Jay Ma · 2009 to 2026
$6.1M
STUDIES OF RPE65R01EY012231 · NEI · WAKE FOREST UNIVERSITY HEALTH SCIENCES · PI MA, JIAN-XING, MOISEYEV, GENNADIY · 1998 to 2021
$5.7M
The wnt signaling pathway in choroidal neovascularizationR01EY018659 · NEI · UNIVERSITY OF OKLAHOMA HLTH SCIENCES CTR · PI MA, JIAN-XING · 2009 to 2019
$3.7M
Study of the RPE barrierR01EY020900 · NEI · UNIVERSITY OF OKLAHOMA HLTH SCIENCES CTR · PI LE, YUN ZHENG · 2010 to 2013
$1.4M
NCRR NIH HHS P20 RR024215NCRR NIH HHS P20RR024215NEI NIH HHS EY012231NEI NIH HHS EY018659NEI NIH HHS EY019309NEI NIH HHS EY20900NEI NIH HHS R01 EY012231NEI NIH HHS R01 EY018659NEI NIH HHS R01 EY019309NEI NIH HHS R01 EY020900NIGMS NIH HHS P20 GM104934
6 · The paper itself

Abstract

purposeHypoxia-inducible factor (HIF)-1 is a key oxygen sensor and is believed to play an important role in neovascularization (NV). The purpose of this study is to determine the role of retinal pigment epithelium (RPE)-derived HIF-1α on ocular NV.

methodsConditional HIF-1α knockout (KO) mice were generated by crossing transgenic mice expressing Cre in the RPE with HIF-1α floxed mice, confirmed by immunohistochemistry, Western blot analysis, and fundus fluorescein angiography. The mice were used for the oxygen-induced retinopathy (OIR) and laser-induced choroidal neovascularization (CNV) models.

resultsHIF-1α levels were significantly decreased in the RPE layer of ocular sections and in primary RPE cells from the HIF-1α KO mice. Under normal conditions, the HIF-1α KO mice exhibited no apparent abnormalities in retinal histology or visual function as shown by light microscopy and electroretinogram recording, respectively. The HIF-1α KO mice with OIR showed no significant difference from the wild-type (WT) mice in retinal levels of HIF-1α and VEGF as well as in the number of preretinal neovascular cells. In the laser-induced CNV model, however, the disruption of HIF-1α in the RPE attenuated the over expression of VEGF and the intercellular adhesion molecule 1 (ICAM-1), and reduced vascular leakage and CNV area.

conclusionsRPE-derived HIF-1α plays a key role in CNV, but not in ischemia-induced retinal NV.

Indexed as

AnimalsBlotting, WesternCells, CulturedChoroidal NeovascularizationDisease Models, AnimalElectroretinographyHypoxiaHypoxia-Inducible Factor 1ImmunohistochemistryMiceMice, KnockoutPolymerase Chain ReactionRetinal Pigment EpitheliumUp-RegulationVascular Endothelial Growth Factor AHypoxia-Inducible Factor 1Vascular Endothelial Growth Factor A

Identifiers

PMID22915031
PMCPMC4113187
OpenAlexW2074010097

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.