KONG Xiao-ni,CUI Hai-yan,ZHOU Hong-lei.Hypoglycemic Effect of Total Flavonoids from Potentillae Discoloris Herbain Type 2 Diabetic db/db Mice[J].Chinese Journal of Experimental Traditional Medical Formulae,2021,27(03):78-84.
KONG Xiao-ni,CUI Hai-yan,ZHOU Hong-lei.Hypoglycemic Effect of Total Flavonoids from Potentillae Discoloris Herbain Type 2 Diabetic db/db Mice[J].Chinese Journal of Experimental Traditional Medical Formulae,2021,27(03):78-84. DOI: 10.13422/j.cnki.syfjx.20210336.
Hypoglycemic Effect of Total Flavonoids from Potentillae Discoloris Herbain Type 2 Diabetic db/db Mice
The hypoglycemic effects and mechanisms of total flavonoids from Potentillae Discoloris Herba(TFE) on insulin resistance through the phosphatidylinositol-3 kinase (PI3K)/protein kinase B (Akt) signaling pathway in db/db mice were investigated.
Method
2
The 24 db/db mice were randomly divided into four groups, model group, metformin group and TFE 100,400 mg·kg
-1
group respectively. The 6 db/m mice as normal control group. After 4 weeks treatment, the mice were processed and the levels of fasting blood glucose(FBG), glycated serum protein(GSP),fasting blood insulin(FINS),triglyceride(TG), total cholesterol(TC), low density lipoprotein cholesterol (LDL-C),high density lipoprotein cholesterol (HDL-C) in serum were detected. Homeostatic model assessments of insulin resistance(HOMA-IR)were quantified. Hematoxylin-eosin(HE)staining of liver and pancreatic tissues were examined. The expression of IR
β
, IRS-1,PI3K,phosphorylation-PI3K (p-PI3K), Akt, phosphorylation-Akt(p-Akt) and glucose transporter 4(GLUT4) in livers were assessed by Western blot.
Result
2
Compared with normal group, model group showed liver and pancreas injury. FBG, GSP, TC, TG, LDL-C, FINS and MDA levels in serum were significantly increased (
P
<
0.01), HDL-C and SOD levels in serum were significantly decreased (
P
<
0.05), liver glycogen content was significantly decreased (
P
<
0.01), as well as expression of IR, IRS-1, p-PI3K/PI3K, p-Akt/Akt and GLUT4 protein in liver tissues were significantly decreased (
P
<
0.01). Compared with model group, TFE was able to relieve liver and pancreas injury,while the levels of FBG, GSP, TC, TG, FINS and MDA in serum were significantly decreased (
P
<
0.05), HDL-C and SOD levels liver were significantly increased (
P
<
0.05), liver glycogen content was significantly increased (
P
<
0.01), and the expressions of IRS-1, p-PI3K/PI3K, p-Akt/Akt and GLUT4 protein in liver tissues were significantly up-regulated (
P
<
0.05).
Conclusion
2
These findings indicate that TFE has the potential to reduce blood sugar and alleviates insulin resistance through the PI3K/Akt signaling pathway in the livers of db/db mice.
关键词
Keywords
references
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