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The human lens epithelium; morphological and ultrastructural changes associated with steroid therapy
A K Karim1, T J Jacob, G M Thompson
1Department of Pharmacology, St George's Hospital Medical School, London.
Experimental Eye Research
|February 1, 1989
Summary
Steroid medication significantly disrupts the lens epithelium in cataract patients, causing intercellular gaps. This structural change is linked to steroid use and may contribute to cataract development.
Area of Science:
- Ophthalmology
- Cell Biology
- Pharmacology
Background:
- Cataracts are a leading cause of vision impairment.
- Steroid medications are widely used but can have ocular side effects.
- The specific impact of steroids on the lens epithelium requires further elucidation.
Purpose of the Study:
- To investigate the structural changes in the lens epithelium of cataract patients undergoing steroid therapy.
- To determine the correlation between steroid medication and lens epithelial disruption.
- To discuss the potential role of this disruption in cataractogenesis.
Main Methods:
- Comparative analysis of lens epithelium structure in cataract patients receiving steroids versus a control group.
- Utilized electron microscopy to examine intercellular spaces within the lens epithelium.
- Statistical analysis to demonstrate the correlation between steroid therapy and observed epithelial changes.
Main Results:
- A distinct reticulated pattern of intercellular clefts was observed in 83% of cataract patients on steroid medication.
- Only 5% of the control group exhibited this pattern.
- Electron microscopy confirmed these clefts as gaps between lateral borders of epithelial cells, indicating significant epithelial disruption.
Conclusions:
- Steroid therapy is significantly correlated with disruption of the lens epithelium structure.
- The observed epithelial disruption, characterized by intercellular gaps, may be a contributing factor to cataract formation.
- Further research is warranted to understand the precise mechanisms linking steroid-induced epithelial changes to cataract development.