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Protective activities of probiotics in letrozole-induced polycystic ovarian syndrome (PCOS) rats
Xinyu Li,Chenyang Xie,Qiuping Huang,Eun Mi Hwang,Bin Jin,Zhewen Dong,Zhen Zeng,Wen He,Qi Qi Pang,Jia-Le Song 한국식품영양과학회 2021 한국식품영양과학회 학술대회발표집 Vol.2021 No.10
To investigate the effect of Bifidobacterium, C. butyricum and L. plantarum on the letrozole induced PCOS rats. All female SD rats were randomly divided into five groups, modeling PCOS rats, and respectively given intragastric administration of Bifidobacterium, C. butyricum, and L. plantarum solution (1×10<SUP>9</SUP> CFU/mL) for 30 days, and observed body weight (BW). The serum levels of testosterone (T), LH, E2, FSH, INS, TG, TC, LDL, HDL were determined by ELISA kits. The levels of TGF-β1, smad4, smad3, p-smad3, p-smad2, smad2 were detected by Western Blotting. Compared with normal group, the BW, T, LH, INS, TG, TC LDL-C in PCOS rats were significantly increased, and the levels of E2, FSH and HDL-C were significantly decreased. Administrated with different probiotics can decrease the BW, T, LH, INS, TG, TC,LDL-C, and the levels of E2, FSH and HDL-C increased in PCOS rats. All probiotics significantly decreased the expression of p-smad2, p-smad3, smad4, TGF-β1. Our results showed that Bifidobacterium, C. butyricum and L. plantarum were all effective in regulating hormone levels, improving IR and dyslipidemia, and improving ovarian fibrosis in PCOS rats.
Qiuping Huang,Chenyang Xie,Xinyu Li,Bin Jin,Qi Pang,Jia-Le Song 한국식품영양과학회 2021 한국식품영양과학회 학술대회발표집 Vol.2021 No.10
To explore the effect of LTA on clinical symptoms in letrozole-induced PCOS rats. Female SD rats were given letrozole for 28 consecutive days to induce the PCOS model. The PCOS rats were given LTA intervention(50 and 200 mg/kg) for 30 days. Changes in body weight and estrous cycle were observed. Serum levels of hormones and lipids were measured by ELISA assay. Protein levels of α-SMA, p-smad2, smad2, p-smad3, smad3 and smad4 were detected by Western Blotting assay. Compared with the normal group, the relative mass of abdominal fat, T, LH, INS, TG, TC and LDL-C were significantly increased, and the levels of E2, FSH and HDL-C were significantly decreased in PCOS rats. The protein levels of p-smad2, p-smad3, smad4 and α-SMA were significantly upregulated in the ovaries of PCOS rats(P<0.05). While the levels of T, LH, INS, TG, TC, LDL-C were decreased and E2, FSH and HDL-C level were increased by LTA treatment. Meanwhile, LTA reduced the protein levels of p-smad2, p-smad3, smad4, and α-SMA in the ovaries. The results suggested LTA was effective in regulating the hormone levels, improving metabolism, and alleviating ovarian fibrosis in PCOS rats.