Evidence map›Paper›PMID 27294805›Full record

ArticleInvestigative ophthalmology & visual science2016

Epithelial Membrane Protein-2 in Human Proliferative Vitreoretinopathy and Epiretinal Membranes.

David G Telander, Alfred K Yu, Krisztina I Forward, Shawn A Morales, Lawrence S Morse, Susanna S Park, Lynn K Gordon

Open access · goldAbstract read
In one paragraph

Article in Investigative ophthalmology & visual science, 2016. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 13 papers.

0numbers the graph read from it
0cells of the map it votes in
13citing papers in PubMed
0.9field-weighted citation impact, top 24% 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

13 citing papers in PubMed, 18 citations in OpenAlex.

  1. Article
  2. A recurrent de novo damaging variant inProceedings of the National Academy of Sciences of the United States of America · 2025
    Article
  3. Fibrotic Changes in Rhegmatogenous Retinal Detachment.International journal of molecular sciences · 2025
    Review
  4. Article
  5. Article
  6. [Proliferative vitreoretinopathy prophylaxis : Mission (im)possible].Der Ophthalmologe : Zeitschrift der Deutschen Ophthalmologischen Gesellschaft · 2021
    Review
  7. Article
  8. Article
  9. Article
  10. A Review of Last Decade Developments on Epiretinal Membrane Pathogenesis.Medical hypothesis, discovery & innovation ophthalmology journal · 2020
    Review
  11. Article
  12. Genetic Deletion ofFrontiers in medicine · 2019
    Article
  13. 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

7 authors at 2 institutions in 1 country.

David G TelanderDepartment of Ophthalmology University of California, Davis, Sacramento, California, United States.
Alfred K YuDepartment of Ophthalmology University of California, Davis, Sacramento, California, United States.
Krisztina I ForwardDepartment of Ophthalmology University of California, Davis, Sacramento, California, United States.
Shawn A MoralesJules Stein Eye Institute, David Geffen School of Medicine at UCLA, Los Angeles, California, United States.
Lawrence S MorseDepartment of Ophthalmology University of California, Davis, Sacramento, California, United States.
Susanna S ParkDepartment of Ophthalmology University of California, Davis, Sacramento, California, United States.
Lynn K GordonJules Stein Eye Institute, David Geffen School of Medicine at UCLA, Los Angeles, California, United States.
University of California, Davis · USDoheny Eye Institute · US

Funding

Novel Therapies to Prevent Blindness Caused by Proliferative VitreoretinopathyR01EY019909 · NEI · UNIVERSITY OF CALIFORNIA LOS ANGELES · PI GORDON, LYNN K · 2010 to 2013
$1.5M
NEI NIH HHS R01 EY019909
6 · The paper itself

Abstract

purposeTo determine the level of epithelial membrane protein-2 (EMP2) expression in preretinal membranes from surgical patients with proliferative vitreoretinopathy (PVR) or epiretinal membranes (ERMs). EMP2, an integrin regulator, is expressed in the retinal pigment epithelium and understanding EMP2 expression in human retinal disease may help determine whether EMP2 is a potential therapeutic target.

methodsPreretinal membranes were collected during surgical vitrectomies after obtaining consents. The membranes were fixed, processed, sectioned, and protein expression of EMP2 was evaluated by immunohistochemistry. The staining intensity (SI) and percentage of positive cells (PP) in membranes were compared by masked observers. Membranes were categorized by their cause and type including inflammatory and traumatic.

resultsAll of the membranes stained positive for EMP2. Proliferative vitreoretinopathy-induced membranes (all causes) showed greater expression of EMP2 than ERMs with higher SI (1.81 vs. 1.38; P = 0.07) and PP (2.08 vs. 1.54; P = 0.09). However all the PVR subgroups had similar levels of EMP2 expression without statistically significant differences by Kruskal-Wallis test. Inflammatory PVR had higher expression of EMP2 than ERMs (SI of 2.58 vs. 1.38); however, this was not statistically significant. No correlation was found between duration of PVR membrane and EMP2 expression. EMP2 was detected by RT-PCR in all samples (n = 6) tested.

conclusionsAll studied ERMs and PVR membranes express EMP2. Levels of EMP2 trended higher in all PVR subgroups than in ERMs, especially in inflammatory and traumatic PVR. Future studies are needed to determine the role of EMP2 in the pathogenesis and treatment of various retinal conditions including PVR.

Indexed as

Gene Expression RegulationAdultAgedCell ProliferationEpiretinal MembraneFemaleHumansImmunohistochemistryMaleMembrane GlycoproteinsMiddle AgedReal-Time Polymerase Chain ReactionRetinal Pigment EpitheliumRNAVitreoretinopathy, ProliferativeEMP2 protein, humanMembrane GlycoproteinsRNA

Identifiers

PMID27294805
PMCPMC4913806
OpenAlexW2420783297

What OpenQuestion holds

Textmetadata
LicenceCC BY-NC-ND
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.