Evidence map›Paper›PMID 32385548›Full record

ArticleCellular and molecular neurobiology2021

Estrogen Protects Optic Nerve Head Astrocytes Against Oxidative Stress by Preventing Caspase-3 Activation, Tau Dephosphorylation at Ser

John C Means, Adam A Lopez, Peter Koulen

Open access · greenAbstract read
In one paragraph

Article in Cellular and molecular neurobiology, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 15 papers.

0numbers the graph read from it
0cells of the map it votes in
15citing papers in PubMed
1.6field-weighted citation impact, top 16% 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

15 citing papers in PubMed, 18 citations in OpenAlex.

  1. Article
  2. Article
  3. Article
  4. Article
  5. Observational
  6. Article
  7. Review
  8. Article
  9. Article
  10. Review
  11. Review
  12. Aging Effects on Optic Nerve Neurodegeneration.International journal of molecular sciences · 2023
    Review
  13. Article
  14. Cell Death Related Proteins Beyond Apoptosis in the CNS.Frontiers in cell and developmental biology · 2021
    Review
  15. Review
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.

John C MeansDepartment of Ophthalmology, School of Medicine, Vision Research Center, University of Missouri - Kansas City, 2411 Holmes St., Kansas City, MO, 64108, USA.
Adam A LopezDepartment of Ophthalmology, School of Medicine, Vision Research Center, University of Missouri - Kansas City, 2411 Holmes St., Kansas City, MO, 64108, USA.
Peter KoulenDepartment of Ophthalmology, School of Medicine, Vision Research Center, University of Missouri - Kansas City, 2411 Holmes St., Kansas City, MO, 64108, USA. koulenp@umkc.edu.ORCID http://orcid.org/0000-0002-0428-4288
City Vision University · USUniversity of Missouri–Kansas City · US

Funding

RADx-UP: Improving the Response of Local Urban and Rural Communities to Disparities in Covid-19 TestingUL1TR002366 · NCATS · UNIVERSITY OF KANSAS MEDICAL CENTER · PI Mario Castro, JAMES STEVEN LEEDER · 2017 to 2026
$44.3M
ROLE OF MITHOCHONDRIAL ERB IN NEURONAL VULNDERABILITY TO NEUROTOXIC STRESSP01AG027956 · NIA · UNIVERSITY OF NORTH TEXAS HLTH SCI CTR · PI SINGH, MEHARVAN · 2007 to 2017
$11.3M
Mechanisms of calcium signaling in retinal neuronsR01EY014227 · NEI · UNIVERSITY OF NORTH TEXAS HLTH SCI CTR · PI KOULEN, PETER · 2003 to 2006
$1.6M
Novel mechanism of action as therapeutic strategy for optic neuritisR01EY022774 · NEI · UNIVERSITY OF MISSOURI KANSAS CITY · PI KOULEN, PETER · 2012 to 2014
$1.2M
Confocal Laser Scanning MicroscopeS10RR027093 · NCRR · UNIVERSITY OF MISSOURI KANSAS CITY · PI KOULEN, PETER · 2010 to 2010
$497k
NCATS NIH HHS UL1 TR002366NCRR NIH HHS RR027093NCRR NIH HHS S10 RR027093NEI NIH HHS EY014227NEI NIH HHS EY022774NEI NIH HHS R01 EY014227NEI NIH HHS R01 EY022774NIA NIH HHS AG027956NIA NIH HHS P01 AG027956NIH HHS TR002366Research to Prevent Blindness Challenge Grant
6 · The paper itself

Abstract

Glaucoma is a neurodegenerative disorder that leads to the slow degeneration of retinal ganglion cells, and results in damage to the optic nerve and concomitant vision loss. As in other disorders affecting the viability of central nervous system neurons, neurons affected by glaucoma do not have the ability to regenerate after injury. Recent studies indicate a critical role for optic nerve head astrocytes (ONHAs) in this process of retinal ganglion cell degeneration. Cleavage of tau, a microtubule stabilizing protein and constituent of neurofibrillary tangles (NFT), plays a major part in the mechanisms that lead to toxicity in CNS neurons and astrocytes. Here, we tested the hypothesis that estrogen, a pleiotropic neuro- and cytoprotectant with high efficacy in the CNS, prevents tau cleavage, and hence, protects ONHAs against cell damage caused by oxidative stress. Our results indicate that estrogen prevents caspase-3 mediated tau cleavage, and thereby decreases the levels of the resulting form of proteolytically cleaved tau protein, which leads to a decrease in NFT formation, which requires proteolytically cleaved tau protein. Overall, our data propose that by stopping the reduction of estrogen levels involved with aging the sensitivity of the optic nerve to glaucomatous damage might be reduced. Furthermore, our data suggest that therapeutic use of estrogen may be beneficial in slowing or preventing the onset or severity of neurodegenerative diseases such as glaucoma and potentially also other degenerative diseases of the CNS through direct control of posttranslational modifications of tau protein.

Indexed as

Oxidative StressProtein AggregatesAnimalsAstrocytesBiomarkersCaspase 3Cell DeathEstrogensGlial Fibrillary Acidic ProteinMaleNeurofibrillary TanglesOptic DiskPhosphorylationPhosphoserineProtective AgentsRatsBiomarkersCaspase 3EstrogensGlial Fibrillary Acidic ProteinPhosphoserineProtective AgentsProtein Aggregatestau Proteinstert-Butylhydroperoxide17β-estradiolBrainCentral nervous systemEyeGlaucomaNeurofibrillary tanglesPhosphorylationRetinaTau cleavage

Identifiers

PMID32385548
PMCPMC7648721
OpenAlexW3022461377

What OpenQuestion holds

Textmetadata
LicenceTDM
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.