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Is primary open angle glaucoma caused by small proteins?

P Russell1, J Koretz, D L Epstein

  • 1National Eye Institute, National Institutes of Health, Bethesda, MD 20892.

Medical Hypotheses
|November 1, 1993
PubMed
Summary
This summary is machine-generated.

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Primary open angle glaucoma may stem from the trabecular meshwork

Area of Science:

  • Ophthalmology
  • Biochemistry

Background:

  • Primary open angle glaucoma involves reduced aqueous humor outflow.
  • Aqueous humor proteins range from 40-200 kilodaltons in normal monkeys.
  • Trabecular meshwork acts as a sieve for proteins in aqueous humor outflow.

Purpose of the Study:

  • To investigate the role of protein size in aqueous humor outflow obstruction.
  • To understand potential mechanisms of primary open angle glaucoma related to protein filtration.

Main Methods:

  • Gel exclusion chromatography was used to analyze monkey aqueous humor proteins.
  • SDS gel electrophoresis was employed to assess smaller proteins and peptides.
  • Column chromatography was utilized to observe protein elution patterns.

Related Experiment Videos

Main Results:

  • Small proteins and peptides in aqueous humor elute with albumin during chromatography.
  • The trabecular meshwork may be obstructed by abnormally large or small proteins.
  • Defective filtration of small proteins by the trabecular meshwork is implicated.

Conclusions:

  • Primary open angle glaucoma may result from impaired trabecular meshwork filtration of small proteins and polypeptides.
  • Alterations in protein size can compromise aqueous humor outflow pathways.