Chronic mild and acute severe glaucomatous neurodegeneration derived from silicone oil-induced ocular hypertension

Sci Rep. 2021 Apr 27;11(1):9052. doi: 10.1038/s41598-021-88690-x.

Abstract

Recently, we established silicone oil-induced ocular hypertension (SOHU) mouse model with significant glaucomatous neurodegeneration. Here we characterize two additional variations of this model that simulate two distinct glaucoma types. The first is a chronic model produced by high frequency (HF) pupillary dilation after SO-induced pupillary block, which shows sustained moderate IOP elevation and corresponding slow, mild glaucomatous neurodegeneration. We also demonstrate that although SO removal quickly returns IOP to normal, the glaucomatous neurodegeneration continues to advance to a similar degree as in the HF group without SO removal. The second, an acute model created by no pupillary dilation (ND), shows a greatly elevated IOP and severe inner retina degeneration at an early time point. Therefore, by a straightforward dilation scheme, we extend our original SOHU model to recapitulate phenotypes of two major glaucoma forms, which will be invaluable for selecting neuroprotectants and elucidating their molecular mechanisms.

Publication types

  • Research Support, N.I.H., Extramural
  • Research Support, Non-U.S. Gov't

MeSH terms

  • Acute Disease
  • Animals
  • Disease Models, Animal*
  • Female
  • Glaucoma / chemically induced
  • Glaucoma / pathology*
  • Intraocular Pressure
  • Male
  • Mice
  • Mice, Inbred C57BL
  • Ocular Hypertension / chemically induced
  • Ocular Hypertension / physiopathology*
  • Retinal Degeneration / chemically induced
  • Retinal Degeneration / pathology*
  • Retinal Ganglion Cells / drug effects
  • Retinal Ganglion Cells / pathology*
  • Silicone Oils / administration & dosage
  • Silicone Oils / toxicity*

Substances

  • Silicone Oils