Evidence map›Paper›PMID 30958169›Full record

ArticleJournal of the Royal Society, Interface2019

A model of the oscillatory mechanical forces in the conventional outflow pathway.

Joseph M Sherwood, W Daniel Stamer, Darryl R Overby

Open access · hybridAbstract read
In one paragraph

Article in Journal of the Royal Society, Interface, 2019. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 35 papers.

0numbers the graph read from it
0cells of the map it votes in
35citing papers in PubMed
4.8field-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

35 citing papers in PubMed, 46 citations in OpenAlex.

  1. Review
  2. Article
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  5. Article
  6. Article
  7. Article
  8. Article
  9. Article
  10. The Factors Affecting the Stability of IOP Homeostasis.Investigative ophthalmology & visual science · 2024
    Article
  11. Article
  12. Glucocorticoid-Induced Ocular Hypertension and Glaucoma.Clinical ophthalmology (Auckland, N.Z.) · 2024
    Review
  13. Article
  14. Article
  15. Article
  16. Article
  17. Review
  18. Article
  19. Article
  20. 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 2 countries.

Joseph M Sherwood1 Department of Bioengineering, Imperial College London , London , UK.
W Daniel Stamer2 Department of Ophthalmology, Duke University , Durham, NC , USA.
Darryl R Overby1 Department of Bioengineering, Imperial College London , London , UK.
Imperial College London · GBDuke University · US

Funding

VISION RESEARCHP30EY005722 · NEI · DUKE UNIVERSITY · PI Vadim Y Arshavsky · 1985 to 2026
$19.3M
The Mechanical Basis of Primary Open Angle GlaucomaR01EY019696 · NEI · NORTHWESTERN UNIVERSITY · PI FREDBERG, JEFFREY J, JOHNSON, MARK · 2009 to 2019
$7.6M
eNOS-Dependent Mechanoregulation of Intraocular PressureR01EY022359 · NEI · DUKE UNIVERSITY · PI STAMER, W DANIEL · 2012 to 2025
$5.6M
NEI NIH HHS P30 EY005722NEI NIH HHS R01 EY019696NEI NIH HHS R01 EY022359
6 · The paper itself

Abstract

Intraocular pressure is regulated by mechanosensitive cells within the conventional outflow pathway, the primary route of aqueous humour drainage from the eye. However, the characteristics of the forces acting on those cells are poorly understood. We develop a model that describes flow through the conventional outflow pathway, including the trabecular meshwork (TM) and Schlemm's canal (SC). Accounting for the ocular pulse, we estimate the time-varying shear stress on SC endothelium and strain on the TM. We consider a range of outflow resistances spanning normotensive to hypertensive conditions. Over this range, the SC shear stress increases significantly and becomes highly oscillatory. TM strain also increases, but with negligible oscillations. Interestingly, TM strain responds more to changes in outflow resistance around physiological values, while SC shear stress responds more to elevated levels of resistance. A modest increase in TM stiffness, as observed in glaucoma, suppresses TM strain and practically eliminates the influence of outflow resistance on SC shear stress. As SC and TM cells respond to mechanical stimulation by secreting factors that modulate outflow resistance, our model provides insight regarding the potential role of SC shear and TM strain as mechanosensory cues for homeostatic regulation of outflow resistance and hence intraocular pressure.

Indexed as

Aqueous HumorIntraocular PressureModels, BiologicalStress, MechanicalTrabecular MeshworkGlaucomaHumansglaucomaintraocular pressureoutflow resistanceSchlemm's canaltrabecular meshwork

Identifiers

PMID30958169
PMCPMC6364644
OpenAlexW2911383645

What OpenQuestion holds

Textmetadata
LicenceCC BY
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.