SOD1 and metabolic syndrome: When compared to the metabolic syndrome rats that received the vehicle, AO at doses of 1, 10, and 100 mg/kg BW increased SOD, CAT, and GSH-Px in the cerebral cortex (p-value < 0.001 all; p-value < 0.01 all; p-value < 0.01, 0.001, and 0.001).