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Updated: Aug 3, 2026
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Observation of the Ciliary Movement of Choroid Plexus Epithelial Cells Ex Vivo
Published on: July 13, 2015
Electrical potential, resistance, and fluid secretion across isolated ciliary body
Experimental Eye Research
|December 1, 1984
Summary
Rabbit ciliary epithelium exhibits low potential and high resistance, indicating a
Area of Science:
- Ophthalmology
- Physiology
- Cell Biology
Background:
- The ciliary epithelium plays a crucial role in aqueous humor production.
- Understanding its transport properties is vital for ocular health research.
Purpose of the Study:
- To characterize the electrical properties and barrier function of the rabbit ciliary epithelium.
- To elucidate the mechanism of fluid secretion in this tissue.
Main Methods:
- Measurement of transepithelial potential and resistance in isolated rabbit ciliary epithelium.
- Assessment of fluid secretion against a hydrostatic gradient.
- Investigation of ouabain's effect on epithelial transport.
Main Results:
- The ciliary epithelium demonstrated a stable, low transepithelial potential and high electrical resistance.
- Fluid secretion was observed against a hydrostatic gradient.
- Ouabain did not readily cross the epithelial barrier, affecting transport differently from each side.
Conclusions:
- The rabbit ciliary epithelium functions as a 'tight' epithelium.
- Fluid secretion is primarily driven by active transport mechanisms, not ultrafiltration.
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