Antioxidative activity

Antioxidative activity is a physiological and chemical property characterized by the ability to neutralize reactive oxygen species (ROS) and inhibit oxidative damage to lipids, proteins, and DNA (Reddy et al., 2017). It is not a specific molecular target like a protein or receptor, but rather a functional outcome of various endogenous systems—such as the enzymes superoxide dismutase (SOD) and catalase—and exogenous antioxidants like vitamins C and E (NIH, 2018). In clinical contexts, enhancing antioxidative activity is a key strategy for treating oxidative stress-related conditions, including neurodegenerative diseases like amyotrophic lateral sclerosis (ALS) and cardiovascular disorders (Nagase et al., 2021). Drugs may exert this activity through direct radical scavenging (e.g., edaravone) or by activating the Nrf2-ARE signaling pathway to boost the body's natural defenses (Mika & Kostrzewa, 2021). Because it represents a broad biological effect rather than a single druggable entity, antioxidative activity is classified as a therapeutic property or mechanism of action rather than a specific molecular target (Cvetnić et al., 2022).

Other names

Antioxidant capacityFree radical scavenging activityRedox bufferingAntioxidant potential

Compounds typically exert antioxidative activity through direct chemical neutralization (scavenging) of free radicals, chelation of pro-oxidant transition metals (e.g., iron, copper), or by activating endogenous defense pathways such as the Nrf2-Keap1-ARE signaling axis to upregulate protective enzymes like superoxide dismutase and catalase.