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. 2021 Jun 19;162(10):bqab118. doi: 10.1210/endocr/bqab118

Figure 7.

Figure 7.

Removal of the intestinal flora can improve insulin resistance and suppress the development of PCOS. Phenotype analysis of PCOS model mice after antibiotic treatment (20 mg/mL vancomycin, 40 mg/mL neomycin sulfate, 40 mg/mL metronidazole, 40 mg/mL ampicillin intragastrically once daily) removed the intestinal flora for 35 days (control: 7; LET: 5; LET+ABX: 7). (A-C) Hematoxylin and eosin staining of the ovary, corpus luteum (CL), cystic follicle (CF), and hemorrhagic cyst (HC). (D) Quantitative analysis of cystic follicles. (E) Serum testosterone levels. (F) Fasting blood glucose. (G) HOMA-IR. (H) mRNA levels of ileum FXR. (I) mRNA levels of liver FXR. (J) Serum FGF15 levels. (D-J) P values were determined by 1-way ANOVA for normally distributed data and the Kruskal-Wallis test for nonnormally distributed data. P < 0.05 was considered statistically significant. ABX, antibiotic treatment; FGF15, fibroblast growth factor 15; FXR, farnesoid X receptor; HOMA-IR, homeostasis model assessment for insulin resistance index; LET, letrozole; PCOS, polycystic ovarian syndrome.