An Imbalance Between Excitatory and Inhibitory Neurotransmitters in Amyotrophic Lateral Sclerosis Revealed by Use of 3-T Proton Magnetic Resonance Spectroscopy

Abstract

There are reduced levels of GABA in the motor cortex of patients with ALS. There are elevated levels of Glx in riluzole-naive patients with ALS compared with riluzole-treated patients with ALS and healthy controls. These results point to an imbalance between excitatory and inhibitory neurotransmitters as being important in the pathogenesis of ALS and an antiglutamatergic basis for the effects of riluzole, although additional research efforts are needed.