Gastric mucosal oxidative and inflammatory mediator pathways

Gastric mucosal oxidative and inflammatory mediator pathways represent a complex network of biochemical processes that maintain the stomach's structural integrity against injurious agents like H. pylori and NSAIDs (Bhattacharyya et al., 2014, PMID: 24470542). These pathways involve the generation of reactive oxygen species (ROS) and the activation of pro-inflammatory signaling cascades, notably the NF-kappaB and MAPK pathways, which regulate the expression of cytokines such as TNF-alpha and IL-1beta (Naito & Yoshikawa, 2005, PMID: 15891238). Under physiological conditions, these processes are balanced by endogenous antioxidant systems, including superoxide dismutase (SOD), catalase, and glutathione (GSH), which neutralize oxidative damage (Repetto & Llesuy, 2002, PMID: 12164278). Pathological activation of these pathways leads to lipid peroxidation, protein oxidation, and DNA damage, ultimately resulting in mucosal erosion, peptic ulcers, and potentially gastric adenocarcinoma (Kwiecien et al., 2014, PMID: 25567520). Pharmacological intervention typically targets specific nodes within these pathways, such as inhibiting cyclooxygenase-2 (COX-2) or utilizing antioxidant supplements to mitigate oxidative stress and restore mucosal homeostasis (Laine et al., 2008, PMID: 18253538). Understanding the interplay between these mediators is essential for developing gastroprotective therapies that can prevent tissue damage without compromising the stomach's natural defense mechanisms.

Other names

Gastric mucosal defense systemGastric oxidative stress signalingGastric inflammatory pathwaysGastric mucosal barrier pathways

Modulation of reactive oxygen species (ROS) production, inhibition of pro-inflammatory cytokines, and enhancement of antioxidant defense mechanisms.