Evidence map›Paper›PMID 22570341›Full record

ArticleInvestigative ophthalmology & visual science2012

An astrocyte-specific proteomic approach to inflammatory responses in experimental rat glaucoma.

Gülgün Tezel, Xiangjun Yang, Cheng Luo, Jian Cai, David W Powell

Open access · bronzeAbstract readComparative Study
In one paragraph

Article in Investigative ophthalmology & visual science, 2012. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 65 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
65citing papers in PubMed, 1 pooled it
8.0field-weighted citation impact, top 2% 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

65 citing papers in PubMed, 1 synthesis or guideline pooled it, 100 citations in OpenAlex.

  1. Pooled it
  2. Article
  3. Article
  4. Review
  5. Article
  6. Review
  7. Article
  8. Article
  9. Immunomodulatory and Antioxidant Drugs in Glaucoma Treatment.Pharmaceuticals (Basel, Switzerland) · 2023
    Review
  10. Article
  11. Article
  12. Article
  13. Article
  14. Review
  15. Review
  16. Review
  17. The heterogeneity of astrocytes in glaucoma.Frontiers in neuroanatomy · 2022
    Review
  18. Article
  19. Review
  20. Review

5 more citing papers are in PubMed but not listed here.

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

5 authors at 1 institution in 1 country.

Gülgün TezelDepartment of Ophthalmology & Visual Sciences, University of Louisville School of Medicine, Louisville, KY 40202, USA. gulgun.tezel@louisville.edu
Xiangjun Yang
Cheng Luo
Jian Cai
David W Powell
Institute of Pharmacology · CZ

Funding

TNF-alpha in Cell Death & Neuroprotection in GlaucomaR01EY013813 · NEI · UNIVERSITY OF LOUISVILLE · PI TEZEL, GULGUN · 2003 to 2011
$2.7M
Proteomic Analysis of Retinal Ganglion Cell Death in GlaucomaR01EY017131 · NEI · UNIVERSITY OF LOUISVILLE · PI TEZEL, GULGUN · 2008 to 2010
$1.1M
NEI NIH HHS R01 EY013813NEI NIH HHS R01 EY017131
6 · The paper itself

Abstract

purposeTo delineate astrocyte-mediated inflammatory processes in glaucoma, we analyzed proteomic responses of retinal astrocytes in an experimental rat model using a cell-specific approach.

methodsIOP elevation was induced in rats by hypertonic saline injections into episcleral veins. Enriched samples of astrocytes were isolated through the immunomagnetic cell selection process established originally for retinal ganglion cell (RGC) sampling. Ocular hypertensive and control samples were collected by pooling from rat eyes matched for the cumulative IOP exposure. Protein expression was analyzed complementarily by quantitative two-dimensional capillary liquid chromatography and linear ion trap mass spectrometry (LC-MS/MS) followed by quantitative Western blot analysis and retinal tissue immunolabeling using specific antibodies to selected proteins.

resultsFollowing validation of enriched astrocyte samples, LC-MS/MS analysis resulted in the identification of over 2000 proteins with high confidence. Bioinformatic comparison analysis of the high-throughput MS/MS data along with the findings of immunoblotting and immunohistochemistry supported distinct responses of ocular hypertensive astrocytes during the experimental paradigm, which exhibited predominantly cellular activation and immune/inflammatory responses as opposed to activation of cell death signaling in ocular hypertensive RGCs. Inflammatory responses of astrocytes in experimental glaucoma included up-regulation of a number of immune mediators/regulators linked to TNF-α/TNFR signaling, nuclear factor kappa-B (NF-κB) activation, autophagy regulation, and inflammasome assembly.

conclusionsThese findings validate an astrocyte-specific approach to quantitatively identify proteomic alterations in experimental glaucoma, and highlight many immune mediators/regulators characteristic of the inflammatory responses of ocular hypertensive astrocytes. By dissecting the complexity of prior data obtained from whole tissue, this pioneering approach should enable astrocyte responses to be defined and new treatments targeting astrocytes to be developed.

Indexed as

Up-RegulationAnimalsAstrocytesBlotting, WesternDisease Models, AnimalGlaucomaInflammationProteomicsRatsRats, Inbred BNRetinal Ganglion CellsTandem Mass Spectrometry

Identifiers

PMID22570341
PMCPMC3392010
OpenAlexW1963965212

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.