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Related Concept Videos

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In open-angle glaucoma, the iridocorneal angle remains open, but the trabecular meshwork becomes stiff, slowing down the outflow of aqueous humor. This causes a buildup of aqueous humor in the anterior chamber, leading to a sudden increase in intraocular pressure. The treatment for open-angle glaucoma focuses on reducing the elevated intraocular pressure by either decreasing the secretion of aqueous humor or increasing its outflow.
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Biomarkers of primary open-angle glaucoma.

Paul A Knepper1, John R Samples2, Beatrice Yjt Yue3

  • 1Department of Ophthalmology and Visual Sciences, University of Illinois at Chicago, 1855 West Taylor, Chicago, IL 60612, USA ; Department of Ophthalmology, Northwestern University Medical School, 150 East Huron, Suite 1000, Chicago, IL 60611, USA.

Expert Review of Ophthalmology
|October 6, 2015
PubMed
Summary
This summary is machine-generated.

Primary open-angle glaucoma (POAG) is a leading cause of blindness. Researchers identified extracellular matrix and immune biomarkers as key indicators for developing a POAG diagnostic signature.

Keywords:
biomarkerintraocular pressureneuroprotectionprimary open-angle glaucoma

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Area of Science:

  • Ophthalmology
  • Neuroscience
  • Immunology

Background:

  • Primary open-angle glaucoma (POAG) is a leading cause of blindness globally, affecting 45 million people.
  • It is a neuronal disease of the optic nerve, often linked to elevated intraocular pressure.
  • Current understanding of POAG etiology remains incomplete.

Purpose of the Study:

  • To elucidate potential etiologic factors in POAG by cataloging known biomarkers.
  • To propose a theoretical model for POAG pathogenesis involving specific molecular pathways.
  • To identify promising biomarkers for a diagnostic signature.

Main Methods:

  • Cataloged biomarkers from aqueous humor, trabecular meshwork, optic nerve, and blood.
  • Classified biomarkers into four categories: extracellular matrix (ECM), cell signaling, aging/stress, and immunity-related changes.
  • Developed a theoretical model of signaling pathways, including ECM, cell signaling, and innate immune response via Toll-like receptor 4 activation.

Main Results:

  • Identified extracellular matrix (ECM) and innate immune biomarkers as significant.
  • Proposed a theoretical model linking ECM, cell signaling, and innate immunity in POAG pathogenesis.
  • Highlighted Toll-like receptor 4 as a potential key mediator.

Conclusions:

  • Extracellular matrix and innate immune biomarkers are strong candidates for a 'POAG biomarker signature'.
  • Further research is crucial to pinpoint POAG causes.
  • Developing a biomarker signature could lead to new treatments for intraocular pressure regulation and neuroprotection.