Effect of <i>Enteromorpha</i> Polysaccharide on Intestinal Bacteria and Short Chain Fatty Acids in Obese Golden Hamsters

HUANG Shiying; CHEN Jiedong; HAN Mengyuan; XU Caihong; GUO Fuchuan

doi:10.13386/j.issn1002-0306.2022030170

Volume 44 Issue 3

Jan. 2023

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Science and Technology of Food Industry > 2023 > 44(3): 381-390. > DOI: 10.13386/j.issn1002-0306.2022030170

HUANG Shiying, CHEN Jiedong, HAN Mengyuan, et al. Effect of Enteromorpha Polysaccharide on Intestinal Bacteria and Short Chain Fatty Acids in Obese Golden Hamsters[J]. Science and Technology of Food Industry, 2023, 44(3): 381−390. (in Chinese with English abstract). doi: 10.13386/j.issn1002-0306.2022030170.

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Effect of Enteromorpha Polysaccharide on Intestinal Bacteria and Short Chain Fatty Acids in Obese Golden Hamsters

1.
School of Public Health, Fujian Medical University, Fuzhou 350122, China
2.
Fujian Maternity and Child Health Hospital, Fuzhou 350001, China

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Received Date: March 14, 2022
Available Online: December 03, 2022

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Abstract

Abstract

Objective: To investigate the effect of Enteromorpha polysaccharide (EP) on blood lipids and intestinal bacteria in obese golden hamsters. Method: Forty male golden hamsters were randomly divided into four groups, including control group (ND), model group (HFD), low-dose EP group (LEP, 300 mg/kg·BW), and high-dose EP group (HEP, 450 mg/kg·BW). The ND group was fed an ordinary diet, while the other three groups were given a high-fat diet. Among the high-fat diet groups, the LEP and HEP groups were continuously administered EP aqueous solution intragastrically. Twelve weeks later, the serum lipid levels were evaluated, the diversity and structural changes in the gut bacteria were examined using 16S rDNA sequencing, and the short-chain fatty acid concentration in faeces was examined using a gas chromatography flame ionisation detector (GC-FID). Results: After 12 weeks, the body weight, serum total cholesterol (TC), triglyceride (TG), and low-density lipoprotein cholesterol (LDL-C) of hamsters in the HFD group were considerably higher than those in the ND group (P<0.05). In contrast, high-dose EP treatment led to a significant decrease in serum TC, TG, LDL-C, and alanine aminotransferase (ALT) levels (P<0.05). Results of 16S rDNA sequencing revealed that at the phylum level the proportion of Firmicutes/Bacteroidetes was substantially higher in the HFD group than in the ND group (P<0.05). However, the level of Firmicutes/Bacteroidetes was much lower in the HEP group, compared to the HFD group (P<0.05). At the genus level, Eubacterium_coprostanoligenes_group and Lachnospiraceae UCG-006 were more abundant in the HFD group than in the ND group (P<0.05). Following high-dose EP intervention, the relative abundance of Eubacterium_coprostanoligenes_group and Lachnospiraceae_UCG-006 fell significantly, compared to the HFD group (P<0.05). Additionally, a high-fat diet feeding resulted in a decrease in the content of short-chain fatty acids in faeces, while high-dose EP intervention significantly increased the short-chain fatty acid content in faeces (P<0.05). Conclusion: The administration of EP alleviates the metabolic disorders of obese golden hamsters fed with a high-fat diet by moderating the composition of intestinal bacteria and enhancing the production of short-chain fatty acids.
- Enteromorpha polysaccharides,
- high-fat diet,
- gut microbiota,
- short-chain fatty acids

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