Abstract
To verify the role of myricetin in alleviating the symptoms of type 2 diabetes and regulating the intestinal flora, we established a type 2 diabetes mouse model. After being fed a high-fat and high-sugar diet for six weeks, mice were intraperitoneally injected with streptozotocin (80 mg/kg body weight [BW]) 2–3 times. Type 2 diabetes mice were randomly divided into type 2 diabetes control (T2DM) and myricetin intervention groups. Water and food intake, fasting blood glucose (FBG), and BW were monitored weekly. After six weeks of myricetin administration, superoxide dismutase (SOD) levels and blood lipid content were measured. Furthermore, 16S rRNA sequencing was used to detect the gut microbiota composition. FBG and blood lipid levels of T2DM mice were significantly reduced upon myricetin treatment, while SOD levels were increased. Myricetin improved polydipsia, polyphagia, polyuria, and weight loss in T2DM mice. In addition, the signature type 2 diabetes microflora was established by analyzing the microflora structure of healthy mice, type 2 diabetes mice, and mice treated with myricetin. Results showed that type 2 diabetes disrupted the mice intestinal flora, and myricetin intervention normalized the intestinal flora. In conclusion, our results indicate that myricetin alleviates type 2 diabetes in mice and regulates the intestinal microflora.
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