Evidence map›Paper›PMID 24458148›Full record

ArticleInvestigative ophthalmology & visual science2014

A nicotinic acetylcholine receptor agonist prevents loss of retinal ganglion cells in a glaucoma model.

Kazuhiro Iwamoto, Patrick Birkholz, Austin Schipper, David Mata, David M Linn, Cindy L Linn

Open access · bronzeAbstract read
In one paragraph

Article in Investigative ophthalmology & visual science, 2014. 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
2.4field-weighted citation impact, top 11% 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, 44 citations in OpenAlex.

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  8. BrdU Positive Cells Induced in a Genetic Mouse Model of Glaucoma.Journal of ophthalmology & visual sciences · 2021
    Article
  9. Involvement ofFrontiers in molecular biosciences · 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

6 authors at 2 institutions in 1 country.

Kazuhiro IwamotoWestern Michigan University, Department of Biological Sciences, Kalamazoo, Michigan.
Patrick Birkholz
Austin Schipper
David Mata
David M Linn
Cindy L Linn
Western Michigan University · USGrand Valley State University · US

Funding

Prevention of RGC loss in an in vitro excitotoxic model and an in vivo model of gR15EY022795 · NEI · WESTERN MICHIGAN UNIVERSITY · PI LINN, CINDY L · 2012 to 2012
$416k
NEI NIH HHS EY 022795NEI NIH HHS R15 EY022795
6 · The paper itself

Abstract

purposeThe purpose of this study was to analyze the neuroprotective effect of an α7 nAChR agonist, PNU-282987, using an in vivo model of glaucoma in Long Evans rats.

methodsOne eye in each animal was surgically manipulated to induce glaucoma in control untreated animals and in animals that were treated with intravitreal injections of PNU-282987. To induce glaucoma-like conditions, 0.05 mL of 2 M NaCl was injected into the episcleral veins of right eyes in each rat to create scar tissue and increase intraocular pressure. The left eye in each rat acted as an internal control. One month following NaCl injection, rats were euthanized, retinas were removed, flatmounted, fixed, and nuclei were stained with cresyl violet or RGCs were immunostained with an antibody against Thy 1.1 or against Brn3a. Stained nuclei in the RGC layer and labeled RGCs in NaCl-injected retinas were counted and compared with cell counts from untreated retinas in the same animal.

resultsNaCl injections into the episcleral veins caused a significant loss of cells by an average of 27.35% (± 2.12 SEM) in the RGC layer within 1 month after NaCl injection, which corresponded to a significant loss of RGCs. This loss of RGCs was eliminated if 5 μL of 100 μM PNU-282987 was injected into the right eye an hour before NaCl injection.

conclusionsThe results from this study support the hypothesis that the α7 agonist, PNU-282987, has a neuroprotective effect in the rat retina. PNU-282987 may be a viable candidate for future therapeutic treatments of glaucoma.

Indexed as

alpha7 Nicotinic Acetylcholine ReceptorAnimalsBenzamidesBridged Bicyclo CompoundsCell CountChromatography, High Pressure LiquidDisease Models, AnimalFemaleGlaucomaIntravitreal InjectionsMaleNeuroprotective AgentsNicotinic AgonistsOptic Nerve DiseasesRatsRats, Long-Evansalpha7 Nicotinic Acetylcholine ReceptorBenzamidesBridged Bicyclo CompoundsNeuroprotective AgentsNicotinic AgonistsPNU-282987glaucomaneuroprotectionretinal ganglion cells

Identifiers

PMID24458148
PMCPMC3934540
OpenAlexW1993607728

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.