Oxidative stress response in macrophage (null)

Oxidative stress in macrophages refers to the imbalance between the production of reactive oxygen species (ROS) and the cell’s ability to detoxify these reactive intermediates or repair resulting damage. Macrophages generate ROS as part of their normal function for killing pathogens, but excessive or dysregulated ROS can lead to cellular dysfunction, altered polarization states, impaired phagocytosis, apoptosis, and contribute to chronic inflammation. This process is implicated in diseases such as asthma, COPD, cancer—especially within tumor microenvironments like glioblastoma multiforme—and atherosclerosis. The redox state influences key signaling pathways including NF-kB and NRF2; targeting these pathways with antioxidants such as N-acetylcysteine or kaempferol has been shown experimentally to modulate both inflammatory responses and cell survival. However, “oxidative stress in macrophages” is not itself a discrete molecular target but rather describes a cellular process involving multiple enzymes (e.g., NADPH oxidases), transcription factors (e.g., NRF2), metabolic regulators, and signaling molecules that collectively determine the functional phenotype of the cell under physiological or pathological conditions[1][2][4]. Note: This entry does not correspond to a single molecule/receptor but instead describes a complex biological process; therefore it should not be considered an individual therapeutic target per se.

Other names

Oxidative stress in macrophagesMacrophage oxidative stress responseRedox regulation in macrophages

Antioxidant compounds reduce ROS and restore redox balance[3][6]. Activation of NRF2 pathway to enhance antioxidant defense and reduce pyroptosis[3].