CSF GABA in normal subjects and patients with depression, schizophrenia, mania, and anorexia nervosa.

The authors examined the CSF GABA of 87 subjects: 29 normal control subjects, 11 patients with schizophrenia, 26 with depression, 6 with mania, and 15 with anorexia nervosa. Depressed patients had significantly lower CSF GABA levels than did normal subjects. This finding suggests that GABA may have a direct or indirect association with depressive affective disorders.