Macrophage Nitric Oxide Generation (Macrophage NO Generation)

Macrophage nitric oxide (NO) generation refers to the process by which macrophages produce NO, a reactive gaseous molecule with key roles in host defense, immunoregulation, and cellular metabolism. The primary enzyme responsible is inducible nitric oxide synthase (iNOS), which converts L-arginine and molecular oxygen into NO and L-citrulline. NO production is induced by pro-inflammatory cytokines and microbial products. It enables macrophages to exert cytostatic or cytotoxic effects against pathogens and tumor cells, as well as modulates cellular metabolism. Dysregulated NO production can contribute to harmful inflammation and tissue damage. Some pathogens have evolved mechanisms that inhibit iNOS expression as an immune evasion strategy.

Other names

Macrophage NO productioniNOS-mediated NO production in macrophagesMacrophage nitric oxide synthase activity

Modulation of iNOS expression and activity; regulation of arginine metabolism; scavenging of NO.