Evidence map›Paper›PMID 28346614›Full record

ArticleInvestigative ophthalmology & visual science2017

Crosstalk Between Transforming Growth Factor Beta-2 and Toll-Like Receptor 4 in the Trabecular Meshwork.

Humberto Hernandez, Wanda E Medina-Ortiz, Tomi Luan, Abbot F Clark, Colleen M McDowell

Open access · goldAbstract read
In one paragraph

Article in Investigative ophthalmology & visual science, 2017. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 42 papers, 3 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
42citing papers in PubMed, 3 pooled it
5.1field-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

42 citing papers in PubMed, 3 syntheses or guidelines pooled it, 58 citations in OpenAlex.

  1. Pooled it
  2. Pooled it
  3. Pooled it
  4. Novel Role for CGRP in Aqueous Humor Outflow.Investigative ophthalmology & visual science · 2026
    Article
  5. Review
  6. Article
  7. Review
  8. Review
  9. Article
  10. Peptide GTSFTTTAER FromFood science & nutrition · 2025
    Article
  11. The Inducible TGFβ2 Ocular Hypertension Mouse Model.Methods in molecular biology (Clifton, N.J.) · 2025
    Article
  12. Review
  13. Article
  14. DAMPs Drive Fibroinflammatory Changes in the Glaucomatous ONH.Investigative ophthalmology & visual science · 2024
    Article
  15. Review
  16. The Fibro-Inflammatory Response in the Glaucomatous Optic Nerve Head.International journal of molecular sciences · 2023
    Review
  17. Viral Vector-Induced Ocular Hypertension in Mice.Methods in molecular biology (Clifton, N.J.) · 2023
    Article
  18. Article
  19. Article
  20. Article
4 · The record

Corrections and comments

5 · Who and what money

Authors and funding

5 authors at 2 institutions in 1 country.

Humberto HernandezNorth Texas Eye Research Institute, University of North Texas Health Science Center, Fort Worth, Texas, United States.
Wanda E Medina-OrtizNorth Texas Eye Research Institute, University of North Texas Health Science Center, Fort Worth, Texas, United States.
Tomi LuanNorth Texas Eye Research Institute, University of North Texas Health Science Center, Fort Worth, Texas, United States.
Abbot F ClarkNorth Texas Eye Research Institute, University of North Texas Health Science Center, Fort Worth, Texas, United States.
Colleen M McDowellNorth Texas Eye Research Institute, University of North Texas Health Science Center, Fort Worth, Texas, United States.
University of North Texas Health Science Center · USUniversity of North Texas · US

Funding

Training in the Neurobiology of Aging and Alzheimer's DiseaseT32AG020494 · NIA · UNIVERSITY OF NORTH TEXAS HLTH SCI CTR · PI ROBERT Clinton BARBER, NATHALIE SUMIEN · 2002 to 2026
$6.9M
Cross-talk of TGFβ2 and TLR4 in the trabecular meshworkR01EY026529 · NEI · UNIVERSITY OF WISCONSIN-MADISON · PI MCDOWELL, COLLEEN MARY · 2016 to 2022
$2.7M
NEI NIH HHS R01 EY026529NIA NIH HHS T32 AG020494
6 · The paper itself

Abstract

Purpose: The trabecular meshwork (TM) is involved in the outflow of aqueous humor and intraocular pressure (IOP) regulation. Regulation of the extracellular matrix (ECM) by TGFβ2 signaling pathways in the TM has been extensively studied. Recent evidence has implicated toll-like receptor 4 (TLR4) in the regulation of ECM and fibrogenesis in liver, kidney, lung, and skin. Here, we investigated the role of TGFβ2-TLR4 signaling crosstalk in the regulation of the ECM in the TM and ocular hypertension. Methods: Cross sections of human donor eyes, primary human TM cells in culture, and dissected mouse TM rings were used to determine Tlr4 expression in the TM. Trabecular meshwork cells in culture were treated with TGFβ2 (5 ng/mL), TLR4 inhibitor (TAK-242, 15 μM), and a TLR4 ligand (cellular fibronectin isoform [cFN]-EDA). A/J (n = 13), AKR/J (n = 7), BALBc/J (n = 8), C3H/HeJ (n = 20), and C3H/HeOuJ (n = 10) mice were injected intravitreally with adenovirus 5 (Ad5).hTGFβ2c226s/c228s in one eye, with the uninjected contralateral eye serving as a control. Conscious IOP measurements were taken using a TonoLab rebound tonometer. Results: Toll-like receptor 4 is expressed in the human and mouse TM. Inhibition of TLR4 signaling in the presence of TGFβ2 decreases fibronectin expression. Activation of TLR4 by cFN-EDA in the presence of TGFβ2 further increases fibronectin, laminin, and collagen-1 expression, and TLR4 signaling inhibition blocks this effect. Ad5.hTGFβ2c226s/c228s induces ocular hypertension in wild-type mice but has no effect in Tlr4 mutant (C3H/HeJ) mice. Conclusions: These studies identify TGFβ2-TLR4 crosstalk as a novel pathway involved in ECM regulation in the TM and ocular hypertension. These data further explain the complex mechanisms involved in the development of glaucomatous TM damage.

Indexed as

Gene Expression RegulationAnimalsAqueous HumorBlotting, WesternCells, CulturedHumansImmunohistochemistryIntraocular PressureMiceMice, Inbred AKRMice, Inbred C3HOcular HypertensionReal-Time Polymerase Chain ReactionRNASignal TransductionToll-Like Receptor 4RNAToll-Like Receptor 4Transforming Growth Factor beta2

Identifiers

PMID28346614
PMCPMC5374883
OpenAlexW1544415029

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.