FGF-21 inhibits lipopolysaccharide induced acute inflammation and its molecular mechanism / 中国药学杂志

ABSTRACT

OBJECTIVE: To study the effects of fibroblast growth factor-21 (FGF-21) on acute inflammation induced by lipopolysaccharide (LPS) and its mechanism. METHODS: Mouse model of acute inflammation was established by injection of LPS and treated with FGF-21 at high, medium and low doses, the pathological changes were detected with HE staining, the expression level of TNF-α, IL-1β, IL-6 and IL-17 in serum and peritoneal macrophage were determined by ELISA and Real-time PCR. NF-κB p65 in macrophage cells was analyzed by confocal laser scanning microscope and Western-blotting. RESULTS: FGF-21 treatment reduced lung damage and inflammatory cell infiltration and decreased the expression level of TNF-α, IL-1β, IL-6 and IL-17 in both serum and peritoneal macrophage. The results of confocal laser scanning microscope and Western-blotting both showed that FGF-21 could inhibit NF-κB transferring to the nucleus. CONCLUSION: FGF-21 could regulate the immune system by acting on macrophage. Relieving the inflammatory response in mice through NF-κB signal pathway may be one of the mechanisms FGF-21 regulating immune system.