Fig. 2From: Electroconvulsive therapy suppresses the neurotoxic branch of the kynurenine pathway in treatment-resistant depressed patientsTryptophan (a), kynurenine (b), kynurenine/tryptophan ratio (c), kynurenic acid (KYNA) (d), quinolinic acid (QUIN) (e), and QUIN/KYNA ratio (f), in the plasma of healthy controls (n = 14) and patients with MDD (n = 19). Each point represents the concentration of a single plasma sample and the horizontal lines the median for each group. ***P < 0.001 (Mann-Whitney U test) (all reported P values are two sided)Back to article page