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Related Experiment Videos

Endothelin: is it a contributor to glaucoma pathophysiology?

Thomas Yorio1, Raghu Krishnamoorthy, Ganesh Prasanna

  • 1Department of Pharmacology and Neuroscience, University of North Texas Health Science Center, North Texas Eye Research Institute, Fort Worth, Texas 76107, USA. yoriot@hsc.unt.edu

Journal of Glaucoma
|July 26, 2002
PubMed
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Endothelin, a peptide regulating blood vessels, is found in the eye and elevated in glaucoma. This review explores its role in eye conditions, particularly glaucoma pathophysiology and optic nerve head effects.

Area of Science:

  • Ophthalmology
  • Vascular Biology
  • Endocrinology

Background:

  • Endothelin is a vasoactive peptide crucial for vascular homeostasis.
  • Endothelin and its receptors are present in ocular tissues, suggesting a regulatory role.
  • Elevated endothelin levels are observed in glaucoma patients and animal models.

Purpose of the Study:

  • To review the distribution of endothelin and its receptors in the eye.
  • To discuss the ocular actions of endothelins.
  • To explore the potential role of endothelin in glaucoma pathophysiology.

Main Methods:

  • Literature review of studies on endothelin in ocular tissues.
  • Analysis of endothelin's effects on aqueous humor dynamics.
  • Examination of endothelin interactions with nitric oxide and ischemia.

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Main Results:

  • Endothelin is present in aqueous and vitreous humors.
  • Endothelin concentration is higher in glaucoma.
  • Endothelin influences optic nerve head function.

Conclusions:

  • Endothelin plays a significant role in ocular physiology.
  • Endothelin's effects on the optic nerve head are relevant to glaucoma.
  • Endothelin pathways are potential targets for glaucoma treatment.