LIU Rong,WANG Jiahui,YANG Xia,et al.Effect of Modified Gegen Qinliantang on FXR/SHP/PPARα Signaling Pathway in Type 2 Diabetic db/db Mice[J].Chinese Journal of Experimental Traditional Medical Formulae,2023,29(20):1-8.
LIU Rong,WANG Jiahui,YANG Xia,et al.Effect of Modified Gegen Qinliantang on FXR/SHP/PPARα Signaling Pathway in Type 2 Diabetic db/db Mice[J].Chinese Journal of Experimental Traditional Medical Formulae,2023,29(20):1-8. DOI: 10.13422/j.cnki.syfjx.20231041.
Effect of Modified Gegen Qinliantang on FXR/SHP/PPARα Signaling Pathway in Type 2 Diabetic db/db Mice
To observe the effect of modified Gegen Qinliantang on the expression levels of proteins related to the farnesoid X receptor/small heterodimer partner/peroxisome proliferator-activated receptor
α
(FXR/SHP/PPAR
α
) signaling pathway in the liver tissue of db/db model mice with type 2 diabetes mellitus (T2DM) and explore the underlying mechanism of action of modified Gegen Qinliantang.
Method
2
Thirty db/db mice were randomly divided into model group, metformin group (0.2 g·kg
-1
), and high-, medium-, and low-dose modified Gegen Qinliantang groups (31.9, 19.1, 6.4 g·kg
-1
), with 6 mice in each group. An additional six m/m mice were assigned to the blank group. Respective drugs were administered via oral gavage for 12 weeks. Mouse body weight, fasting blood glucose (FBG), total cholesterol (TC), triglyceride (TG), high-density lipoprotein cholesterol (HDL-C), and low-density lipoprotein cholesterol (LDL-C) levels were measured. Oil red O staining was used to observe hepatic lipid accumulation and periodic acid-schiff (PAS) staining was used to assess hepatic glycogen deposition. Ammonium ferric sulfate staining was used to observe cholesterol deposition in intestinal tissues. Western blot was employed to detect the expression of FXR, cholesterol 7
α
-hydroxylase (CYP7A1), SHP, and PPAR
α
proteins in liver tissues, and enzyme-linked immunosorbent assay (ELISA) was used to measure serum free fatty acid (FFA) levels.
Result
2
At the end of the treatment, compared with the blank group, the model group exhibited significant increases in mouse body weight, FBG, FFA, TC, TG, and LDL-C levels (
P
<
0.01), along with significant hepatic lipid droplets, reduced hepatic glycogen, noticeable cholesterol accumulation in intestinal tissues, significantly decreased expression of FXR, SHP, PPAR
α
proteins, and significantly increased expression of CYP7A1 protein in liver tissues (
P
<
0.01). Compared with the model group, the metformin group and the high- and medium-dose modified Gegen Qinliantang groups demonstrated significant reductions in mouse body weight, FBG, FFA, TC, TG, LDL-C levels (
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