CAT and metabolic syndrome: Figure 1(c) shows that CAT activity was significantly suppressed in the same OB w.o.MetS group versus both CTR and OB w.MetS (p < 0.01). GST erythrocyte activity (Figure 1(d)) was markedly lower than CTR (p < 0.001) in all obese patients. As a whole, obese subgroups suffered a depletion of glutathione erythrocyte levels, affecting both reduced (GSH) and oxidized (GSSG) forms in OB w.MetS (p < 0.01) and limited to GSSG in OB w.o.MetS (Figures 1(e) and 1(f)).