Abstract
Alcohol has been shown to inhibit veratridine- and batrachotoxin-stimulated sodium flux in rodent brain synaptosomes. In this study, binding of [ 3H]batrachotoxinin A 20-α-benzoate ([ 3H]BTX-B) and uptake of [ 14C]guanidine in cerebrocortical synaptosomes were measured in naive rats belonging to lines with high or low acute sensitivity to ethanol (ANT, Alcohol Non-Tolerant, vs. AT, Alcohol Tolerant, lines) and to lines with high or low voluntary alcohol consumption (AA, Alko Alcohol, vs. ANA, Alko Non-Alcohol, lines). Our rat line pairs did not differ in the equilibrium binding characteristics of [ 3H]BTX-B nor in the properties of [ 14C]guanidine uptake, suggesting that the genetic selection has not modulated the genes or the expression of the genes associated with the voltage-sensitive sodium channels.
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