Kupffer cell reactive oxygen species and nitric oxide production (KC ROS/NO)

Kupffer cells are the resident macrophages of the liver, playing a central role in the organ's innate immune response (Source: PubMed, PMID: 28611557). The production of reactive oxygen species (ROS) and nitric oxide (NO) by these cells is a critical component of the inflammatory response, typically triggered by pathogen-associated molecular patterns (PAMPs) or damage-associated molecular patterns (DAMPs) (Source: NIH, StatPearls). ROS are primarily generated via the NADPH oxidase (NOX) complex, while NO is synthesized by the inducible nitric oxide synthase (iNOS) enzyme (Source: PubMed, PMID: 15123778). While these molecules are essential for killing pathogens, their sustained or excessive production leads to oxidative and nitrosative stress, which damages hepatocytes and activates hepatic stellate cells, driving fibrosis (Source: PubMed, PMID: 22403337). Consequently, this process is a major driver in the pathogenesis of alcoholic liver disease, non-alcoholic steatohepatitis (NASH), and hepatic ischemia-reperfusion injury (Source: PubMed, PMID: 25873468). Pharmacological intervention typically targets the upstream signaling pathways (like TLR4) or the specific enzymes (NOX and iNOS) to reduce the inflammatory burden in the liver (Source: PubChem).

Other names

Kupffer cell oxidative burstHepatic macrophage ROS/NO productionKupffer cell activationKupffer cell nitrosative stress

Inhibition of NADPH oxidase (NOX) and inducible nitric oxide synthase (iNOS) activity to decrease the production of reactive oxygen and nitrogen species.