Journal of Neuroscience, Vol 1, 364-367, Copyright © 1981 by Society for Neuroscience
Enhancement by anesthetic and convulsant barbiturates of GABA binding to rat brain synaptosomal membranes
M Willow and GA Johnston
All of the anesthetic (amylobarbitone, butobarbitone, pentobarbitone,
phenobarbitone, and secobarbitone) and convulsant (5-ethyl-5(3'-
methylbut-2-enyl) barbituric acid (3M2B) and 5-ethyl-5-(2'-
cyclohexylidene-ethyl) barbituric acid (CHEB) barbiturates tested enhanced
the binding of GABA to a carefully prepared P2 membrane fraction from rat
brain in a dose-dependent manner. These findings are in agreement with the
potentiation of the inhibitory effects of GABA in many neuronal systems by
both classes of barbiturates.