Selenium Attenuates Lipopolysaccharide-Induced Oxidative Stress Responses Through Modulation of p38 MAPK and NF-κB Signaling Pathways:

作者: Sang Hyun Kim , Victor J. Johnson , Tae-Yong Shin , Raghubir P. Sharma

DOI: 10.1177/153537020422900209

关键词:

摘要: Lipopolysaccharide (LPS) produces reactive oxygen species (ROS) and nitric oxide (NO) in macrophages. These molecules are involved inflammation associated with endotoxic shock. Selenium (Se), a biologically essential trace element, modulates the functions of many regulatory proteins signal transduction affects variety cellular activities, including cell growth survival. We demonstrate that Se attenuated LPS-induced ROS NO production murine macrophage cultures vitro. This Se-decreased was demonstrated by decreases both mRNA protein expression for inducible synthase (INOS). The preventive effects on INOS were p38 mitogen-activated kinase- nuclear factor-κB-dependent. specifically blocked activation but not c-jun-N-terminal kinase extracellular signal-regulated kinase; p38-specific pathway confirmed using inhibitor SB 203580. results suggest mechanism which Se...

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