Corticosteroid treatment and trabecular meshwork proteases in cell and organ culture supernatants

Robert W. Snyder, W. Daniel Stamer, Theresa R. Kramer, Richard E.B. Seftor

Research output: Contribution to journalArticlepeer-review

84 Scopus citations

Abstract

Steroid-induced glaucoma is believed to result from increased aqueous outflow resistance and evidence suggests that this is the result of an excess accumulation of extracellular matrix components. This accumulation could result from an ambalance in the natural turnover of these components. We have investigated the effect of corticosteroid treatment of trabecular meshwork (TM) organ and cell cultures on the extracellular activities of the matrix metalloproteinases and plasminogen activators. We find that corticosteroid treatment results in decreased extracellulard activity of stromelysin and tissue plasminogen activator in trabecular meshwork cell culture, and decreasedd 92 kDa collagenase IV, stromelysin, and tissue plasminogen activator in trabecular meshwork organ culture. These data suggest that decreased levels of proteolytic activities could account, in part, for the accumulation of some extracellular matrix components and be a contributing mechanism in steroid-induced glaucoma.

Original languageEnglish (US)
Pages (from-to)461-468
Number of pages8
JournalExperimental eye research
Volume57
Issue number4
DOIs
StatePublished - Jan 1 1993

Keywords

  • Aqueous outflow resistance
  • Degradative proteinase
  • Extracellular matrix
  • Matrix metalloproteinase
  • Steroid-induced glaucoma
  • Tissue plasminogen activator
  • Trabecular meshwork
  • Urokinase

ASJC Scopus subject areas

  • Ophthalmology
  • Sensory Systems
  • Cellular and Molecular Neuroscience

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