Evidence map›Paper›PMID 16186342›Full record

ArticleInvestigative ophthalmology & visual science2005

Targeted deletion of AP-2alpha leads to disruption in corneal epithelial cell integrity and defects in the corneal stroma.

Dhruva J Dwivedi, Giuseppe F Pontoriero, Ruth Ashery-Padan, Shelley Sullivan, Trevor Williams, Judith A West-Mays

Open access · greenAbstract read
In one paragraph

Article in Investigative ophthalmology & visual science, 2005. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 26 papers.

0numbers the graph read from it
0cells of the map it votes in
26citing papers in PubMed
2.5field-weighted citation impact, top 12% 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

26 citing papers in PubMed, 35 citations in OpenAlex.

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  10. Ocular surface development and gene expression.Journal of ophthalmology · 2013
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  11. Overlapping expression patterns and redundant roles for AP-2 transcription factors in the developing mammalian retina.Developmental dynamics : an official publication of the American Association of Anatomists · 2012
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  19. Cell autonomous roles for AP-2alpha in lens vesicle separation and maintenance of the lens epithelial cell phenotype.Developmental dynamics : an official publication of the American Association of Anatomists · 2008
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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 2 countries.

Dhruva J DwivediDepartment of Pathology and Molecular Medicine, McMaster University, Hamilton, Ontario, Canada.
Giuseppe F Pontoriero
Ruth Ashery-Padan
Shelley Sullivan
Trevor Williams
Judith A West-Mays
McMaster University · CATel Aviv University · IL

Funding

THE ROLE OF AP-2 IN CRANIOFACIAL DEVELOPMENTR01DE012728 · NIDCR · YALE UNIVERSITY · PI WILLIAMS, TREVOR J · 1998 to 2013
$5.5M
Role of AP-2 genes in development of the lensR01EY011910 · NEI · TUFTS MEDICAL CENTER · PI WEST-MAYS, JUDITH A · 1998 to 2006
$1.3M
NEI NIH HHS EY11910NEI NIH HHS R01 EY011910NIDCR NIH HHS DE12728NIDCR NIH HHS R01 DE012728
6 · The paper itself

Abstract

purposeThe present study was undertaken to create a conditional knockout of AP-2alpha in the corneal epithelium.

methodsA line of mice expressing Cre-recombinase specifically in the early lens placode was crossed with mice in which the AP-2alpha allele is flanked by two loxP sites. The resultant Le-AP-2alpha mutants exhibited a targeted deletion of AP-2alpha in lens placode derivatives, including the differentiating corneal epithelium.

resultsThe Le-AP-2alpha mutant mice were viable and had a normal lifespan. The adult corneal epithelium exhibited a variation in the number of stratified epithelial layers, ranging from 2 to 10 cell layers. A substantial decrease in expression of the cell-cell adhesion molecule, E-cadherin, was observed in all layers of the Le-AP-2alpha mutant corneal epithelium. The basement membrane, or Bowman's layer, was thinner in the mutant cornea and in many regions was discontinuous. These defects corresponded with altered distribution of laminin and entactin, and to a lesser degree, type IV collagen. The Le-AP-2alpha mutant cornea also exhibited stromal defects, including disrupted organization of the collagen lamellae and accumulation of fibroblasts beneath the epithelium that showed increased immunoreactivity for proliferating cell nuclear antigen (PCNA), alpha-smooth muscle actin (alpha-SMA), p-Smad2, and TGF-beta2.

conclusionsIn the absence of AP-2alpha, the corneal epithelium exhibits altered cell adhesion and integrity and defects in its underlying basement membrane. These defects likely caused the alterations in the corneal stroma.

Indexed as

Gene DeletionActinsAnimalsBasement MembraneCadherinsCell AdhesionCell Adhesion MoleculesCollagen Type IVCorneal DiseasesCorneal StromaEpithelium, CornealFluorescent Antibody Technique, IndirectLamininMembrane GlycoproteinsMiceMice, KnockoutActinsCadherinsCell Adhesion MoleculesCollagen Type IVLamininMembrane GlycoproteinsnidogenProliferating Cell Nuclear AntigenTransforming Growth Factor betaTransforming Growth Factor beta2

Identifiers

PMID16186342
PMCPMC2517422
OpenAlexW2029908158

What Socratic 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 Socratic graph.