Abstract
The interaction of the inhibitory neurotransmitter gamma-aminobutyric acid (GABA) with erythrocyte membranes from patients with Huntington disease and normal controls has been studied by electron spin resonance. GABA affects the physical state of erythrocyte membrane proteins in control and Huntington disease differently. In addition, after exposure of spin-labeled Huntington disease erythrocyte membranes to 0.1 mM GABA, the relevant electron spin resonance parameters reflecting the physical state of membrane proteins are indistinguishable from those of untreated control membranes. These findings support the concept that this disease is associated with a generalized membrane defect.
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