Nitroxidative stress pathway components

Nitroxidative stress pathway components encompass a complex network of enzymes and reactive molecules involved in the production and regulation of reactive oxygen species (ROS) and reactive nitrogen species (RNS) (PMID: 28641100). Key enzymatic players include Nitric Oxide Synthases (NOS), which produce nitric oxide, and NADPH Oxidases (NOX), which generate superoxide radicals (PMID: 30553903). Under pathological conditions, the overproduction of these species leads to the formation of highly reactive intermediates like peroxynitrite, causing oxidative and nitrosative damage to proteins, lipids, and DNA. This process is a hallmark of various chronic diseases, including neurodegeneration, atherosclerosis, and cancer. Therapeutic interventions targeting this pathway aim to restore redox balance by inhibiting radical-generating enzymes or enhancing the body's endogenous antioxidant capacity. Drugs such as N-acetylcysteine and various NOS inhibitors are used to modulate these pathways in clinical and experimental settings. However, targeting these components is challenging due to the dual role of ROS and RNS as both damaging agents and essential signaling molecules. Monitoring biomarkers like nitrotyrosine and malondialdehyde is crucial for assessing the extent of nitroxidative damage and the efficacy of treatment.

Other names

Oxidative and nitrosative stress pathwayRedox signaling pathway componentsROS/RNS pathwayNitrosative stress pathway

Modulation of reactive oxygen and nitrogen species levels through enzyme inhibition (e.g., NOS or NOX inhibitors), direct scavenging of radicals, or induction of antioxidant enzymes (PMID: 30553903).