Abstract
Abstract Diallyl sulfide (DAS) is an effective bioactive organosulfur compound extracted from garlic. This study aimed to explore whether the protective effect of DAS on lipopolysaccharide (LPS)/ d -galactosamine ( d -GalN) induced acute liver injury was associated with the regulation of Kupffer cell (KC) activation. The results indicated that DAS administration protected mice from LPS/D-GalN-induced histopathological damage and serum aminotransferase elevation and also showed more pronounced beneficial effects than GdCl3 administration. The F4/80+ or CD11b+ KC immunohistochemistry results showed that DAS administration suppressed LPS/D-GalN-induced KC activation. DAS administration also suppressed LPS/D-GalN-triggered production of TNF-α, IL-1β, MCP-1 and NO in the liver or serum, which was in line with the mRNA expression of TNF-α, IL-1β, IL-6, MCP-1 and iNOS in the liver. Taken together, these findings reveal that the protective effects of DAS on LPS/D-GalN-induced acute liver injury may be achieved by inhibiting the activation of KC, thereby suppressing the secretion of various proinflammatory mediators.
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