Abstract
Sodium iodoacetate (IAA) at 10-3m was shown to cause a biphasic depolarization of the rabbit lens. The first portion of the depolarization was attributed to inhibition of the electrogenic sodium pump following depression of glycolysis. The larger second phase of lens depolarization, a transient increase both of lens conductance and 42K efflux rate, all indicate that IAA influences lens membrane permeability characteristics. After 100 min exposure to IAA, the lens potential stabilized at -39 mV, and lens conductance and 42K efflux rate stabilized at values close to the control values. These findings suggested that extended treatment with IAA increased the ratio of lens sodium to potassium permeability without increasing the overall leakiness of the lens.
Original language | English (US) |
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Pages (from-to) | 797-802 |
Number of pages | 6 |
Journal | Experimental eye research |
Volume | 34 |
Issue number | 5 |
DOIs | |
State | Published - May 1982 |
Keywords
- calcium
- electrolyte balance
- membrane permeability
- rabbit lens
- sodium iodoacetate
ASJC Scopus subject areas
- Ophthalmology
- Sensory Systems
- Cellular and Molecular Neuroscience