Antioxidant activity pathway

The antioxidant activity pathway refers to a collective set of cellular and molecular mechanisms that neutralize or detoxify reactive oxygen species (ROS) and free radicals generated by normal metabolism or environmental stressors[1][2][4][5]. These pathways engage both enzymatic antioxidants, such as superoxide dismutase, catalase, and glutathione peroxidase, and non-enzymatic antioxidants, such as vitamins E and C, flavonoids, and glutathione[2][4][5]. The antioxidant activity pathway is critical for cellular defense against oxidative damage to lipids, proteins, and DNA, thereby reducing the risk of diseases including cancer, cardiovascular disease, and neurodegeneration[4][5]. Drugs and dietary supplements that enhance or mimic components of these pathways are used therapeutically or preventively, though clinical efficacy and safety must be carefully considered, as inappropriate use of antioxidants can have unintended consequences in some disease settings[5]. "Antioxidant activity pathway" is not a molecule, receptor, or direct drug target, and is therefore considered an incorrect entry under strict drug target taxonomy. For a structured target entry, identify and select specific antioxidant enzymes or redox-regulating proteins (e.g., "Superoxide dismutase", "Glutathione peroxidase", "NADPH oxidase") rather than the broad pathway.

Other names

Antioxidant pathwayAntioxidant defense systemOxidative stress defense pathwayRedox pathway

Free radical scavenging; Enhancement of endogenous antioxidant enzymes (e.g., SOD, catalase, glutathione peroxidase); Inhibition of pro-oxidant enzymes (e.g., NADPH oxidase, xanthine oxidase); Regeneration of other antioxidants