Evidence map›Paper›PMID 29966451›Full record

ArticleCurrent eye research2018

Elimination of Signaling by the Luteinizing Hormone Receptor Reduces Ocular VEGF and Retinal Vascularization during Mouse Eye Development.

Tammy Z Movsas, Robert Sigler, Arivalagan Muthusamy

Open access · greenAbstract read
In one paragraph

Article in Current eye research, 2018. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 12 papers.

0numbers the graph read from it
0cells of the map it votes in
12citing papers in PubMed
1.4field-weighted citation impact, top 18% 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

12 citing papers in PubMed, 15 citations in OpenAlex.

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  11. The association between high levels of luteinizing hormone and proliferative retinopathy of prematurity in female preterm infants.Journal of AAPOS : the official publication of the American Association for Pediatric Ophthalmology and Strabismus · 2020
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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

3 authors at 2 institutions in 1 country.

Tammy Z Movsasa Zietchick Research Institute (ZRI) , Plymouth , Michigan , USA.
Robert Siglerc Unit for Laboratory Animal Medicine , University of Michigan Medical School , Ann Arbor , Michigan , USA.
Arivalagan Muthusamya Zietchick Research Institute (ZRI) , Plymouth , Michigan , USA.
Zietchick Research Institute (United States) · USUniversity of Michigan–Ann Arbor · US

Funding

Hormonal Therapeutic for Retinopathy of PrematurityR43EY028467 · NEI · ZIETCHICK RESEARCH INSTITUTE, LLC · PI MOVSAS, TAMMY Z · 2017 to 2017
$225k
NEI NIH HHS R43 EY028467
6 · The paper itself

Abstract

Purpose/Aim: Vascular endothelial growth factor (VEGF) dysregulation is implicated in the pathogenesis of retinopathy of prematurity (ROP). Identifying the factors that contribute to VEGF regulation during normal retinal vascularization is the key to ROP prevention. Currently, physiologic hypoxia is thought to be responsible for retinal VEGF regulation in utero. However, a potential hormonal contribution to VEGF regulation during eye development has not been fully investigated. The placental hormone, human chorionic gonadotropin and the pituitary hormone, and luteinizing hormone (LH) induce VEGF expression in several tissue types. Both of these gonadotropins activate the same LH receptor (LHR) in the human body; LHRs are expressed in the retina. In this study, we aimed to show that LHR signaling participates in VEGF regulation in the developing eye.

methodsWhen offspring from breeding pairs of LHR knockout mice (lhrkos) reached 21 days old, eyes and serum were extracted from homozygote lhrkos and wildtype (WT) siblings. VEGF levels were measured using Mouse VEGF Quantikine immunoassay kit. Retinas were incubated with isolectin for endothelial cell staining, flat mounted and imaged by confocal microscopy. Retinal vascular density was quantified using Imaris software. Some eyes were sectioned and stained for histopathologic review.

resultsOcular VEGF and retinal vascular volumes were significantly reduced by ~ 15% in lhrko eyes. Serum VEGF was not changed. The lhrko retinas did not display any anomalies.

conclusionsWe provide evidence that LHR signaling plays a role in VEGF regulation and vascularization in the developing eye. Given that human preterm infants may have altered LHR-activity, the effect of gonadotropins on eye development should be further studied to identify novel strategies for ROP prevention.

Indexed as

AnimalsAnimals, NewbornEyeFemaleMaleMiceMice, Inbred C57BLMice, KnockoutMicroscopy, FluorescenceReceptors, LHRetinal NeovascularizationRetinal VesselsRetinopathy of PrematuritySignal TransductionVascular Endothelial Growth Factor AReceptors, LHVascular Endothelial Growth Factor Avascular endothelial growth factor A, mousedeveloping eyeeye developmentluteinizing hormoneretinopathy of prematurityROPVEGF

Identifiers

PMID29966451
PMCPMC6262229
OpenAlexW2810003528

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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.