Evidence map›Paper›PMID 22531697›Full record

ArticleInvestigative ophthalmology & visual science2012

Two-photon immunofluorescence characterization of the trabecular meshwork in situ.

Jose M Gonzalez, Martin Heur, James C H Tan

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 24 papers.

0numbers the graph read from it
0cells of the map it votes in
24citing papers in PubMed
2.7field-weighted citation impact, top 10% 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, 39 citations in OpenAlex.

  1. Article
  2. Review
  3. Review
  4. Article
  5. Aqueous outflow regulation - 21st century concepts.Progress in retinal and eye research · 2021
    Review
  6. Article
  7. Article
  8. Article
  9. Article
  10. Article
  11. Article
  12. Article
  13. Review
  14. Article
  15. Article
  16. Article
  17. Article
  18. Observing live actin in the human trabecular meshwork.Clinical & experimental ophthalmology · 2014
    Article
  19. Sources of structural autofluorescence in the human trabecular meshwork.Investigative ophthalmology & visual science · 2013
    Article
  20. Article
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 1 institution in 1 country.

Jose M GonzalezDoheny Eye Institute and Department of Ophthalmology, Keck School of Medicine, University of Southern California, Los Angeles, California 90033, USA.
Martin Heur
James C H Tan
Doheny Eye Institute · US

Funding

VISION RESEARCHP30EY003040 · NEI · DOHENY EYE INSTITUTE · PI SUN, DEMING · 1985 to 2013
$7.0M
Role of trabecular meshwork contractility in modulating outflow resistanceK08EY020863 · NEI · UNIVERSITY OF SOUTHERN CALIFORNIA · PI TAN, CHEE HIAN · 2010 to 2013
$981k
MULTI-PHOTON CONFOCAL MICROSCOPE SYSTEMS10RR024754 · NCRR · UNIVERSITY OF SOUTHERN CALIFORNIA · PI PETI-PETERDI, JANOS · 2008 to 2008
$500k
NCRR NIH HHS 1S10RR024754NCRR NIH HHS S10 RR024754NEI NIH HHS EY020863NEI NIH HHS K08 EY020863NEI NIH HHS P30 EY003040
6 · The paper itself

Abstract

purposeTo develop an in situ model to study biological responses and glaucoma pathology in the human trabecular meshwork (TM). Characteristic TM cell- and glaucoma-associated markers were localized in situ in relation to the tissue's autofluorescent structural extracellular matrix (ECM) by two-photon excitation fluorescence optical sectioning (TPEF).

methodsHuman donor corneoscleral (CS) tissue containing the intact aqueous drainage tract was incubated with dexamethasone (Dex) or TGF-β1, and immunostained for epifluorescence (EF) microscopy with antibodies to myocilin and alpha smooth muscle (α-SMA). Separate specimens were labeled for Type-IV collagen and fibronectin. Nuclei were stained with Hoechst 33342. Multimodal TPEF was used to visualize EF, intravital dyes, and autofluorescence (AF) in situ. Three-dimensional (3D) localization of fluorescence within the TM was analyzed using reconstruction software.

resultsAutofluorescent beams, perforated sheets, and fibers, consistent with the uveal (UV), CS, and juxtacanalicular (JCT) meshwork, respectively, were captured at different depths of the TM. Type-IV collagen EF distinctly outlined the AF beams in a location consistent with basement membrane. Fibronectin EF showed a diffuse reticular pattern throughout the TM. TGF-β1-induced α-SMA expression, which was distributed perinuclearly in cells among autofluorescent structures. Dex-induced myocilin expression had both cytosolic and extracellular distributions.

conclusionsThe authors have localized markers that are characteristic of TM cells and relevant to glaucoma pathogenesis in situ using multimodal TPEF without conventional histological embedding and sectioning. Protein expression was inducible in situ and could be analyzed with respect to cells and the ECM within the 3D environment of the human TM.

Indexed as

ActinsCell CountCollagen Type IVCytoskeletal ProteinsExtracellular MatrixEye ProteinsFibronectinsFluorescent Antibody Technique, IndirectGlycoproteinsHumansImaging, Three-DimensionalMyocilinPhotonsTrabecular MeshworkACTA2 protein, humanActinsCollagen Type IVCytoskeletal ProteinsEye ProteinsFibronectinsGlycoproteinsMyocilin

Identifiers

PMID22531697
PMCPMC3374625
OpenAlexW2054111267

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.