Natroceutics Glutathione SOD Azikho A trifunctional enzyme with glutathione S transferase, glutathione peroxidase and superoxide dismutase activity ScienceDirect ROS production and scavenging. SOD: Superoxide dismutase; GPx: Download Scientific Diagram Adding superoxide dismutase (SOD) in the Amplex UltraRed assay is more than a conversion step to generate HO from O. It also reduces chemical background from NADH or glutathione auto oxidation and First line defence antioxidants superoxide dismutase (SOD), catalase (CAT) and glutathione peroxidase (GPX): Their fundamental role in the entire antioxidant defence grid ScienceDirect Oxidative stress in Portuguese children with Down syndrome