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Amomum tsao‐ko fruit extract suppresses lipopolysaccharide‐induced inducible nitric oxide synthase by inducing heme oxygenase‐1 in macrophages and in septic mice
This study was designed to assess the anti‐inflammatory effects and the molecular mechanisms of the methanol extract of A. tsao‐ko (AOM) in lipopolysaccharide (LPS)‐induced RAW 264.7 macrophages and in a murine model of sepsis. In LPS‐induced RAW 264.7 macrophages, AOM reduced the production of nitric oxide (NO) by inhibiting inducible nitric oxide synthase (iNOS) expression, and increased heme oxygenase‐1 (HO‐1) expression at the protein and mRNA levels. Pretreatment with SnPP (a selective inhibitor of HO‐1) and silencing HO‐1 using siRNA prevented the AOM‐mediated inhibition of NO production and iNOS e...
Source: International Journal of Experimental Pathology - January 14, 2016 Category: Pathology Authors: Ji‐Sun Shin, Suran Ryu, Dae Sik Jang, Young‐Wuk Cho, Eun Kyung Chung, Kyung‐Tae Lee Tags: Original Article Source Type: research