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Published on: May 12, 2011
Apoptosis in ocular disease: a molecular overview
1Department of Ophthalmology and Visual Sciences, University of Wisconsin, Madison 53792-4673, USA.
Abstract:
Apoptosis is a form of genetically programmed cell death that can be induced by a variety of different stimuli. It is often referred to as a form of cellular suicide. Typically, apoptosis is characterized by the condensation and shrinkage of the cellular nucleus and cytoplasm, followed by the complete fragmentation of the cell and subsequent phagocytosis of the debris by surrounding cells. Although important during development, and also for maintaining homeostasis in some adult tissues, apoptosis can also be associated with disease processes. Recent laboratory studies indicate that apoptosis is a mechanism of cell death in several important ocular diseases including glaucoma, retinitis pigmentosa, cataract formation, retinoblastoma, retinal ischemia, and diabetic retinopathy. This review summarizes the results of these studies and provides a brief description of some of the key molecules that are involved in the genetic regulation of apoptosis. It is possible that a complete understanding of how these molecules function may someday lead to new treatment options aimed at blocking the death of cells in a variety of ocular diseases.
Insights
Apoptosis, or programmed cell death, is a key factor in ocular diseases like glaucoma and diabetic retinopathy. Understanding its molecular regulation may lead to new therapeutic strategies for vision loss.
Area of Science:
- Ophthalmology
- Cell Biology
- Molecular Genetics
Background:
- Apoptosis, a form of programmed cell death, plays a role in both normal physiological processes and disease.
- Dysregulation of apoptosis is implicated in the pathogenesis of various ocular conditions.
Purpose of the Study:
- To review recent laboratory findings on apoptosis as a mechanism of cell death in major ocular diseases.
- To provide an overview of key molecules involved in the genetic regulation of apoptosis.
Main Methods:
- Literature review of laboratory studies focusing on apoptosis in ocular diseases.
- Summary of key molecular players in the genetic control of apoptosis.
Main Results:
- Apoptosis is a significant cell death pathway in glaucoma, retinitis pigmentosa, cataract, retinoblastoma, retinal ischemia, and diabetic retinopathy.
- Specific molecular pathways regulate the induction and execution of apoptosis.
Conclusions:
- Apoptosis is a common mechanism underlying cell loss in numerous sight-threatening ocular diseases.
- Further understanding of apoptotic molecular mechanisms could pave the way for novel therapeutic interventions targeting cell death in eye diseases.
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