Abstract

Diazepam (3 nM–3 μM) enhanced GABA binding to well-washed synaptosomal membranes in a concentration-dependent manner. Half maximal enhancement occurred at 20 nM diazepam. Kinetic analysis by non-linear Scatchard analysis revealed that the primary action of diazepam was to increase the affinity of GABA binding to a low affinity site. These results support electrophysiological and other biochemical observations of benzodiazepine-GABA interactions.

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