Study on mechanism of Jianpi Huatan Prescription in insulin resistance of polycystic ovary syndrome through AMPK/LKB1 signaling pathway
10.3760/cma.j.cn115398-20240119-00227
- VernacularTitle:健脾化痰方通过LKB1/AMPK信号通路改善多囊卵巢综合征胰岛素抵抗的作用机制研究
- Author:
Tian LUO
1
;
Xiao LI
;
Anying LIN
;
Luyu YANG
;
Lan LI
;
Ximing YU
Author Information
1. 湖南中医药大学药学院，长沙 410208
- Keywords:
Polycystic ovary syndrome;
Insulin resistance;
Jianpi Huatan Formula;
LKB1/AMPK;
Rats
- From:
International Journal of Traditional Chinese Medicine
2024;46(10):1303-1309
- CountryChina
- Language:Chinese
-
Abstract:
Objective:To investigate the effects of Jianpi Huatan Prescription on a rat model of polycystic ovary syndrome (PCOS) with insulin resistance (IR) induced by letrozole combined with high fat diet based on the liver kinase B1 (LKB1)/AMP activated protein kinase (AMPK) signaling pathway; To discuss its mechanism.Methods:A total of 40 SD female rats were divided into model group (30 rats) and blank group (10 rats). The model group rats were fed with high-fat feed from the first week of modeling for 8 consecutive weeks, and from the fourth week onwards, were given a daily gavage of letrozole solution for 5 consecutive weeks; the blank group was fed normally, and from the 4th week onwards, an equal amount of sodium carboxymethyl cellulose solution was administered. After the completion of modeling, the modeling group was divided into Jianpi Huatan Prescription group, Metformin group, and model group according to random number table method. The Jianpi Huatan Prescription group and the metformin group were given corresponding drug interventions, while the other two groups were simultaneously administered an equal amount of physiological saline for a total of 4 weeks. Ovarian morphological changes were observed using HE staining; intraperitoneal glucose tolerance test (IPGTT) was used to detect glucose tolerance in rats; Enzyme linked immunosorbent assay (ELISA) was used to detect the levels of follicle stimulating hormone (FSH), luteinizing hormone (LH), estrogen (E 2), total testosterone (T), fasting blood glucose (FBG), and fasting insulin (FINS) in rats; Real time fluorescence quantitative PCR and Western blot techniques were used to detect changes in LKB1, AMPK mRNA and protein expression in the LKB1/AMPK signaling pathway of rat ovarian tissue. Results:Compared with the model group, the polycystic changes in the ovaries of rats in the Jianpi Huatan Prescription group were improved, and the growth rate of body weight decreased. The levels of FBG, FINS, HOMA-IR, and IPGTT decreased ( P<0.05 or P<0.01), while serum FSH and HDL-C levels were significantly up-regulated ( P<0.05 or P<0.01). The levels of T, LH, LH/FSH, TC, TG, and LDL-C decreased ( P<0.05 or P<0.01); The mRNA and protein expression levels of LKB1 and AMPK in ovarian tissue increased ( P<0.05). Conclusion:Jianpi Huatan Prescription can improve PCOS-IR in rats caused by the combination of letrozole and high-fat diet, regulate various levels of sex hormones, and improve glucose and lipid metabolism disorders by regulating the LKB1/AMPK signaling pathway, which has a repairing effect on polycystic ovary disease in rats.
