reported the TCM decoction Bu Shen Hua Zhuo formula (BSHZF) administration improved gut microbiota function in rats with letrozole-induced PCOS and inhibited the activation of the TLR4/NF-kB signaling pathway in PCOS-related ovarian tissue, decreasing the pro-inflammatory cytokines TNF-a, IL-6, and IL-8 (236). Here, TLR4 is linked to polycystic ovary syndrome.