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Human ciliary body in organ culture
M Eichhorn1, K Inada, E Lütjen-Drecoll
1Department of Anatomy, University of Erlangen-Nürnberg, FRG.
Current Eye Research
|April 1, 1991
Summary
Human ciliary body explants were cultured to study their function. Optimal results showed intact ciliary epithelium with high enzyme activity for up to 5 days.
Area of Science:
- Ophthalmology
- Cell Biology
- Physiology
Background:
- The ciliary body is crucial for aqueous humor production and maintaining intraocular pressure.
- Understanding the long-term viability and function of ciliary body in vitro is essential for ocular research.
Purpose of the Study:
- To assess the morphological and functional stability of human ciliary body explants in organ culture.
- To evaluate the expression and localization of key enzymes involved in secretion.
Main Methods:
- Organ culture of human ciliary body explants (n=30) for up to 14 days.
- Light and electron microscopy for morphological assessment.
- Histochemical analysis for Na/K-ATPase and carbonic anhydrase (CA) localization.
Main Results:
- Explants survived optimally for 3-5 days, with >90% survival at 3 days and >70% at 5 days.
- Cultured nonpigmented (NPE) and pigmented epithelium (PE) cells retained secretory characteristics, including membrane infoldings and abundant mitochondria.
- High activity of Na/K-ATPase and CA was observed, alongside fenestrated capillaries, indicating sustained secretory function.
Conclusions:
- Human ciliary body explants can be successfully maintained in organ culture for short periods (3-5 days).
- These explants preserve key morphological and enzymatic features necessary for active secretion, making them a valuable model for studying ocular physiology.
- Longer culture durations (7-14 days) led to metabolic changes, evidenced by increased lipid droplets and glycogen granules.