Food Funct 2018 Oct 17;910:5371-5380. doi: 10.1039/c8fo01174e.

A fucoidan from sea cucumber Pearsonothuria graeffei with well-repeated structure alleviates gut microbiota dysbiosis and metabolic syndromes in HFD-fed mice.

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A high-fat diet (HFD) has been a major contributor to increasing morbidity caused by metabolic syndromes. Functional foods from natural sources are potential choices for addressing metabolic diseases because they provide many health benefits with a low level of adverse side effects. In our former reports, fucoidan from Pearsonothuria graeffei (fuc-Pg), a type of sulfated polysaccharides with a repeating structure, was shown to be a potential functional food ingredient. In this work, we investigated the effects of fuc-Pg on gut microbiota dysbiosis and metabolic syndromes caused by HFD. Our results indicated that fuc-Pg could reduce weight gains, alleviate hyperlipidemia, and protect the liver from steatosis in HFD-fed mice. Meanwhile, fuc-Pg decreases serum inflammatory cytokines and reduces macrophages infiltrating into adipose tissue. The gut microbiota dysbiosis caused by HFD was alleviated by administration of fuc-Pg, mainly working in the colon. Fuc-Pg increased abundances of Bacteroidetes and Actinobacteria while decreased Firmicutes and Proteobacteria. Our results indicated that fuc-Pg could be a functional food for gut microbiota dysbiosis and metabolic syndromes.

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Genes referenced: fat4 LOC100887844