文献类型： 外文期刊
作者： Zheng, Meiyu 1 ; Wang, Lu 1 ; Sun, Yuqing 2 ; Pi, Xionge 3 ; Zhang, Wenjuan 1 ; Gao, Pu 1 ; Lu, Shengmin 1 ; Liu, Wei 3 ;
作者机构： 1.Zhejiang Acad Agr Sci, Inst Food Sci, State Key Lab Managing Biot & Chem Threats Qual &, Zhejiang Prov Key Lab Fruit & Vegetable Preservat, Hangzhou, Peoples R China
2.Zhejiang Acad Agr Sci, Inst Sericulture & Tea, Hangzhou, Peoples R China
3.Zhejiang Acad Agr Sci, Inst Plant Protect & Microbiol, Hangzhou, Peoples R China
关键词： Phellinus baumii; STZ-induced; Hypoglycemic effect; In vitro fermentation; Intestinal flora
期刊名称：BIOMEDICINE & PHARMACOTHERAPY （ 影响因子：7.5； 五年影响因子：6.8 ）
ISSN： 0753-3322
年卷期： 2023 年 158 卷
页码：
收录情况： SCI
摘要： Phellinus baumii extract (PBE) possesses considerable alpha-glucosidase-inhibited activity. This study investigated the hypoglycemic effect in vitro and in vivo using a glucose consumption assay in HepG2 cells, intragastric admin-istration for ten weeks in STZ-induced mice, and intestinal flora fermentation in patients with type 2 diabetes to reveal the possible underlying mechanisms. PBE was prepared, including alpha-glucosidase-inhibited ethanol extract (EE) and aqueous extract (AE). In vitro, PBE promoted glucose consumption and enhanced glycogen content and hexokinase activity but lowered phosphoenolpyruvate carboxylase kinase activity in HepG2 cells. In vivo, PBE treatment significantly reduced the body weight (p < 0.05) and fasting blood glucose levels of diabetic mice (p < 0.01), with the lowest blood glucose level observed in the EE+AE group. Furthermore, the serum insulin levels and insulin resistance index (HOMA) of PBE-treated groups decreased significantly (p < 0.01). Moreover, gene expression levels of the IRS-1/PI3K/AKT pathway were significantly upregulated by PBE treatment (p < 0.01). In vitro fermentation demonstrated that EE significantly inhibited the production of H2S and NH3 in the intestinal flora fermentation model in diabetic patients (p < 0.05). In addition, the ratio of Firmicutes to Bacteroidetes was reduced, the growth of Lactobacillus and Prevotella 9 was promoted, and Pseudomonas aeruginosa was inhibited. This study provides new insights and clues for using PBE as a functional food and clinical drug for glycemic control.
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