Oxidative Stress

Oxidative Stress designates a biological state in which reactive oxygen species production exceeds antioxidant defence capacity, leading to damage of proteins, lipids, and nucleic acids and disrupting cellular function. Reactive oxygen species include free radicals and non-radical oxidants generated through mitochondrial metabolism, inflammation, environmental exposures, or enzymatic reactions, contributing to ageing, tissue injury, and disease progression.

The biopharmaceutical industry studies oxidative stress as both disease driver and drug development consideration. Neurodegenerative diseases such as Alzheimer's and Parkinson's involve oxidative damage contributing to neuronal dysfunction, while cardiovascular diseases include oxidative stress-mediated endothelial injury. In biologics manufacturing and formulation, oxidative stress affects protein stability through methionine oxidation, disulphide scrambling, and aggregation, requiring antioxidants, controlled storage conditions, and robust stability testing. Biomarkers such as lipid peroxidation products or oxidised proteins support mechanistic studies and clinical monitoring. As redox biology understanding advances and antioxidant strategies become more targeted, oxidative stress continues shaping therapeutic development, formulation science, and mechanistic research across multiple disease areas.