Free radical neutralization

"Free radical neutralization" is not a specific molecule or receptor but rather a biochemical process by which free radicals—atoms or molecules with unpaired electrons—are rendered harmless through chemical reactions with antioxidants. This process is essential for protecting cells from oxidative damage caused by reactive oxygen species (ROS) and reactive nitrogen species (RNS), which are generated during normal metabolism and in response to environmental stresses. Antioxidants—including enzymatic systems like superoxide dismutase, catalase, and glutathione peroxidase as well as nonenzymatic compounds like vitamin C and vitamin E—neutralize free radicals via electron donation or hydrogen atom transfer. While this function is critical for preventing cellular damage linked to aging, cancer, neurodegeneration, cardiovascular disease, and inflammation[1][2][3], "free radical neutralization" itself does not refer to a discrete therapeutic target such as an enzyme or receptor; rather it describes the collective action of various molecules involved in maintaining redox homeostasis. Because "free radical neutralization" is a process—not a single molecular entity—it should not be considered a canonical drug target. Instead, individual enzymes or antioxidant proteins involved in this process may serve as therapeutic targets. If you need structured information on specific antioxidant enzymes/proteins that mediate free radical neutralization—such as "Superoxide dismutase," "Catalase," or "Glutathione peroxidase"—please specify the particular molecule.

Other names

Free radical scavengingAntioxidant activityRadical scavengingNeutralization of reactive oxygen species (ROS)

Electron donation to free radicals; Hydrogen atom transfer to neutralize radicals; Chelation of metal ions that catalyze radical formation.