Abstract
Previous studies of direct alcohol toxicity on nerve tissue have been carried out using acute, extremely high doses of alcohol. Chronic administration of 20 mM ethanol to the mollusc Aplysia californica was achieved by adding ethanol to surrounding seawater. Although the animals appeared healthy, isolated ganglion cells from treated animals had significantly decreased mean action potential amplitudes and prolonged mean action potential durations compared to controls. These findings suggest that chronic exposure to a low concentration of ethanol comparable to that producing drunkeness in humans may have a direct toxic effect on invertebrate nerve tissue.
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