Evidence map›Paper›PMID 32910133›Full record

ArticleInvestigative ophthalmology & visual science2020

Pressure-Induced Changes in Astrocyte GFAP, Actin, and Nuclear Morphology in Mouse Optic Nerve.

Yik Tung Tracy Ling, Mary E Pease, Joan L Jefferys, Elizabeth C Kimball, Harry A Quigley, Thao D Nguyen

Erratum issuedOpen access · goldAbstract readComparative Study
In one paragraph

Article in Investigative ophthalmology & visual science, 2020. The graph could read no effect estimate from its abstract, so it casts no vote on the map. An erratum has been issued. Cited by 24 papers.

0numbers the graph read from it
0cells of the map it votes in
24citing papers in PubMed
4.6field-weighted citation impact, top 4% 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

24 citing papers in PubMed, 32 citations in OpenAlex.

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  16. The heterogeneity of astrocytes in glaucoma.Frontiers in neuroanatomy · 2022
    Review
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4 · The record

Corrections and comments

5 · Who and what money

Authors and funding

6 authors at 2 institutions in 1 country.

Yik Tung Tracy LingDepartment of Mechanical Engineering, The Johns Hopkins University, Baltimore, Maryland, United States.
Mary E PeaseWilmer Ophthalmological Institute, Johns Hopkins School of Medicine, Baltimore, Maryland, United States.
Joan L JefferysWilmer Ophthalmological Institute, Johns Hopkins School of Medicine, Baltimore, Maryland, United States.
Elizabeth C KimballWilmer Ophthalmological Institute, Johns Hopkins School of Medicine, Baltimore, Maryland, United States.
Harry A QuigleyWilmer Ophthalmological Institute, Johns Hopkins School of Medicine, Baltimore, Maryland, United States.
Thao D NguyenDepartment of Mechanical Engineering, The Johns Hopkins University, Baltimore, Maryland, United States.
Johns Hopkins University · USJohns Hopkins Medicine · US

Funding

Wilmer Core Grant for Vision ResearchP30EY001765 · NEI · JOHNS HOPKINS UNIVERSITY · PI Ji Yi · 1985 to 2026
$22.1M
PATHOGENESIS OF GLAUCOMATOUS OPTIC NERVE DAMAGER01EY002120 · NEI · JOHNS HOPKINS UNIVERSITY · PI QUIGLEY, HARRY ALAN · 1985 to 2025
$12.6M
Pathogenesis of Glaucomatous Optic Nerve DamageR56EY002120 · NEI · JOHNS HOPKINS UNIVERSITY · PI QUIGLEY, HARRY ALAN · 2008 to 2008
$369k
NEI NIH HHS P30 EY001765NEI NIH HHS R01 EY002120NEI NIH HHS R56 EY002120
6 · The paper itself

Abstract

Purpose: To conduct quantitative analysis of astrocytic glial fibrillary acidic protein (GFAP), actin and nuclei distribution in mouse optic nerve (ON) and investigate changes in the measured features after 3 days of ocular hypertension (OHT). Method: Serial cross-sections of 3-day microbead-induced OHT and control ONs were fluorescently labelled and imaged using confocal microscope. Eighteen structural features were measured from the acquired images, including GFAP coverage, actin area fraction, process thickness, and aspect ratio of cell nucleus. The measured features were analyzed for variations with axial locations along ON and radial zones transverse to ON, as well as for the correlations with degree of intraocular pressure (IOP) change. Results: The most significant changes in structural features after 3-day OHT occurred in the unmyelinated ON region (R1), and the changes were greater with greater IOP elevation. Although the GFAP, actin, axonal, and ON areas all increased in 3-day OHT ONs in R1 (P ≤ 0.004 for all), the area fraction of GFAP actually decreased (P = 0.02), the actin area fraction was stable and individual axon compartments were unchanged in size. Within R1, the number of nuclear clusters increased (P < 0.001), but the mean size of nuclear clusters was smaller (P = 0.02) and the clusters became rounder (P < 0.001). In all cross-sections of control ONs, astrocytic processes were thickest in the rim zone compared with the central and peripheral zones (P ≤ 0.002 for both), whereas the overall process width in R1 decreased after 3 days of OHT (P < 0.001). Conclusions: The changes in structure elucidated IOP-generated alterations that underlie astrocyte mechanotranslational responses relevant to glaucoma.

Indexed as

ActinsAnimalsAstrocytesDisease Models, AnimalGlaucomaGlial Fibrillary Acidic ProteinIntermediate FilamentsIntraocular PressureMiceOptic NerveActinsGlial Fibrillary Acidic Protein

Identifiers

PMID32910133
PMCPMC7488631
OpenAlexW3086961166

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.