Oxidative stress reduction via antioxidant activity

"Oxidative stress reduction via antioxidant activity" is not a single molecular target but rather describes a **biological process** involving the neutralization or removal of free radicals—primarily reactive oxygen species—by antioxidants. Free radicals are molecules with unpaired electrons produced during normal metabolism, immune responses, and exposure to environmental factors. While excessive free radical accumulation leads to cellular damage implicated in diseases such as cancer, cardiovascular disease, diabetes, neurodegeneration, inflammation, and aging,[1][4][5] moderate levels play important roles in cell signaling and homeostasis.[1] The body’s defense against oxidative stress includes both enzymatic antioxidants like superoxide dismutase and catalase,[3] as well as nonenzymatic small molecules such as vitamins C/E. Many drugs marketed as antioxidants aim to restore redox balance by either directly scavenging reactive species or upregulating endogenous defenses. However, this is not considered a classical drug target like an enzyme or receptor; rather it is a **therapeutic strategy** encompassing multiple molecular targets within the broader context of redox biology. *Note*: This entry does not correspond to a specific molecule/receptor/protein but refers broadly to processes/mechanisms; thus it should be flagged as "is_incorrect: true" for structured drug-target databases seeking discrete molecular entities.

Other names

Free radical scavengingAntioxidant defenseRedox homeostasisReactive oxygen species (ROS) neutralization

Drugs targeting oxidative stress typically act by one or more of the following mechanisms: - Direct scavenging of free radicals/reactive oxygen species (ROS)[3][4] - Upregulation of endogenous antioxidant enzymes such as superoxide dismutase, catalase, glutathione peroxidase[3][6]* - Inhibition of ROS-producing enzymes like NADPH oxidases or xanthine oxidase[3][4]