Effect of 1-Deoxynojirimycin Isolated from Mulberry Leaves on Glucose Metabolism and Gut Microbiota in a Streptozotocin-Induced Diabetic Mouse Model

Journal of Natural Products
Teng-Gen HuYu-Xiao Zou

Abstract

1-Deoxynojirimycin (DNJ) exerts hypoglycemic effects. However, the traditional method for DNJ extraction is inefficient, and the hypoglycemic mechanism of DNJ remains unclear. In this study, the mixed fermentation by Lactobacillus fermentum and Saccharomyces cerevisiae was used to enhance DNJ extraction efficiency. It was found that this strategy was more efficient than the traditional method as the yield improved from the original 3.24 mg/g to 5.97 mg/g. The purified DNJ significantly decreased serum glucose (P < 0.01) and insulin levels (P < 0.05), improved serum lipid levels (P < 0.05), and reversed insulin resistance (P < 0.05) in diabetic mice. These changes were caused by up-regulating the protein expression of insulin receptor and glycolysis enzymes (GK, PK, and PFK) (P < 0.05) and down-regulating the protein expression of insulin receptor substrate-1 and gluconeogenesis enzymes (PCB, PEPCK, FBPase, and G-6-Pase) (P < 0.05), thus alleviating glucose tolerance. Additionally, DNJ treatment relieved gut dysbiosis in diabetic mice by promoting the growth of Lactobacillus, Lachnospiraceae NK4A136 group, Oscillibacter, norank Lachnospiraceae, Alistipes, and Bifidobacterium (P < 0.05) and suppressing the growth of Ruminococcace...Continue Reading

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Citations

May 12, 2021·Journal of Chromatography. B, Analytical Technologies in the Biomedical and Life Sciences·Zhi-Miao ZhangJin-Ao Duan
Jul 6, 2021·Saudi Journal of Biological Sciences·Bisma JanSayeed Ahmad
Jul 27, 2021·Evidence-based Complementary and Alternative Medicine : ECAM·Mingqian LiYongqiang Zhu
Jul 12, 2020·Journal of Agricultural and Food Chemistry·Sheng-Li NiuJin-Long Tian

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