CAT and Behcet disease: In the present study we assessed, in BD patients, standard measures of inflammation (CRP, ESR, leukocyte count), proinflammatory cytokine levels (TNF-α, IL-18), Trolox equivalent antioxidant capacity (TEAC), ferric reducing antioxidant power (FRAP), total antioxidant enzyme activity (AOA), catalase (CAT), superoxide dismutase (SOD) and myeloperoxidase (MPO) activities.