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Corneal endothelial cell apoptosis in patients with Fuchs' dystrophy
V M Borderie1, M Baudrimont, A Vallée
1Department of Ophthalmology, Hôpital Saint Antoine, Paris, France. vincent.borderie@sat.ap-hop-paris.fr
Investigative Ophthalmology & Visual Science
|August 11, 2000
Summary
Apoptosis, or programmed cell death, is a key factor in corneal endothelial cell loss in Fuchs' dystrophy. Further research is needed to confirm these findings using transmission electron microscopy.
Area of Science:
- Ophthalmology
- Cell Biology
- Pathology
Background:
- Fuchs' dystrophy is a progressive corneal disease.
- Endothelial cell dysfunction is a hallmark of Fuchs' dystrophy.
- The mechanisms of endothelial cell loss are not fully understood.
Purpose of the Study:
- To determine if apoptosis contributes to corneal endothelial cell degeneration in Fuchs' dystrophy.
- To investigate the role of programmed cell death in Fuchs' dystrophy pathogenesis.
Main Methods:
- Studied 47 corneal buttons from Fuchs' dystrophy patients and controls.
- Utilized nucleus labeling, transmission electron microscopy (TEM), and TUNEL assay.
- Compared apoptotic cell detection in Fuchs' dystrophy corneas versus controls.
Main Results:
- Nucleus labeling showed significantly higher apoptotic endothelial cells in Fuchs' dystrophy (2.65%) vs. controls (0.23%).
- TUNEL assay detected apoptotic cells in 42/47 Fuchs' dystrophy corneas, but rarely in controls.
- TEM revealed occasional apoptotic endothelial cells, with some apoptotic cells also noted in the basal epithelial layer of Fuchs' dystrophy corneas.
Conclusions:
- Apoptosis appears to play a significant role in endothelial cell degeneration in Fuchs' dystrophy.
- Further TEM studies are required to definitively confirm increased endothelial apoptosis.
- The findings suggest a potential therapeutic target for Fuchs' dystrophy.