Related Experiment Video
Updated: Aug 8, 2026
Optic Nerve Transection: A Model of Adult Neuron Apoptosis in the Central Nervous System
Published on: May 12, 2011
Retinal ganglion cell death in glaucoma: the how, the why, and the maybe
1Department of Ophthalmology and Visual Sciences, University of Wisconsin, Madison 53792, USA.
Purpose:
Research on the mechanism of cell death in experimental glaucoma indicates that ganglion cells die by apoptosis. Several stimuli may account for the activation of apoptosis in glaucoma, including neurotrophin deprivation caused by blockage of retrograde axonal transport during periods of elevated IOP, or glutamate toxicity caused by ischemia to the optic nerve and ganglion cells.
Results:
The finding that apoptosis is a significant mechanism of cell death in glaucoma may make it possible to develop new treatments that specifically block or interfere with this form of cell death. Preventing ganglion cell death may only be a stop-gap measure, however, in that it treats the result of the disease and not the cause. Still, in many cases ganglion cell death has already been stimulated in patients by the time they are diagnosed with glaucoma and continues to progress even after conventional treatments.
Conclusion:
Thus, therapies that prevent further ganglion cell death, in combination with standard pressure management therapies, may become a viable treatment for glaucoma in the future.
Insights
Glaucoma causes ganglion cell death through apoptosis. New therapies targeting this cell death mechanism, alongside traditional treatments, may offer future glaucoma management options.
Area of Science:
- Ophthalmology
- Neuroscience
- Cell Biology
Background:
- Glaucoma is a leading cause of irreversible blindness.
- Ganglion cell death is a hallmark of glaucoma progression.
- Current treatments primarily focus on intraocular pressure (IOP) management.
Purpose of the Study:
- To investigate the mechanism of ganglion cell death in experimental glaucoma.
- To identify stimuli that activate apoptosis in glaucoma.
- To explore potential therapeutic targets for preventing ganglion cell death.
Main Methods:
- Experimental models of glaucoma were used.
- Mechanisms of cell death, specifically apoptosis, were analyzed.
- Stimuli such as neurotrophin deprivation and glutamate toxicity were examined.
Main Results:
- Ganglion cells in experimental glaucoma predominantly undergo apoptosis.
- Elevated IOP can lead to neurotrophin deprivation via axonal transport blockage.
- Ischemia affecting the optic nerve and ganglion cells can cause glutamate toxicity.
Conclusions:
- Apoptosis is a significant mechanism driving ganglion cell death in glaucoma.
- Targeting apoptosis offers a potential therapeutic strategy.
- Combining anti-apoptotic therapies with IOP management may provide future glaucoma treatment.
More Related Videos
08:30Glaucoma-inducing Procedure in an In Vivo Rat Model and Whole-mount Retina Preparation
Published on: March 12, 2016
13:12Partial Optic Nerve Transection in Rats: A Model Established with a New Operative Approach to Assess Secondary Degeneration of Retinal Ganglion Cells
Published on: October 15, 2017
Related Concept Videos
01:25Glaucoma: Overview
01:27Diabetic Retinopathy