Abstract
Chondroitin sulfate (CS) is a special bioactive substance with lipid metabolism regulation functions; its molecular mechanisms, however, need further study. This study aimed to study the role of gut microbiota and liver metabolome in the anti-obesity effects of CS. The results demonstrated that CS significantly reduced body weight gain and alleviated insulin resistance and dyslipidemia induced by high-fat diet treatment. Moreover, CS interestingly increased the content of Firmicutes in intestinal microbiota. Further studies showed that there were 11 different metabolites involved in metabolic pathways, including the unsaturated fatty acid biosynthesis pathway, primary bile acid biosynthesis, and taurine and hypotaurine metabolism. In addition, Spearman's correlation analysis indicated that the anti-obesity effect of CS is closely related to liver metabolic regulation. Overall, these results provide a possible molecular mechanism by which CS reduces body weight and lipid accumulation.
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