First line defence antioxidants superoxide dismutase (SOD), catalase (CAT) and glutathione peroxidase (GPX): Their fundamental role in the entire antioxidant defence grid ScienceDirect Several lines of antioxidant defense against oxidative stress: antioxidant enzymes, nanomaterials with multiple enzyme mimicking activities, and low molecular weight antioxidants Archives of Toxicology Springer Nature Link Exploring Therapeutic Potential of Catalase: Strategies in Disease Prevention and Management Upregulation of catalase and downregulation of glutathione peroxidase activity in the kidney precede the development of hypertension in pre hypertensive SHR Hypertension Research