Si-Wu-Tang facilitates ovarian function through improving ovarian microenvironment and angiogenesis in a mouse model of premature ovarian failure

Fanru Zhou, Yufan Song, Xia Liu, Chu Zhang, Fan Li, Runan Hu, Yanjing Huang, Wenwen Ma, Kunkun Song, Mingmin Zhang
In: Journal of Ethnopharmacology · 2021 · vol. 280 , pp. 114431 · doi:10.1016/j.jep.2021.114431 · PMID:34293457 · W3185008616
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Si-Wu-Tang treatment improved ovarian function in a mouse model of premature ovarian failure by enhancing the ovarian microenvironment and promoting angiogenesis through specific signaling pathways.

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Abstract

ETHNOPHARMACOLOGICAL RELEVANCE: Premature ovarian failure (POF) is a severe illness, characterized by premature menopause with a markedly decrease in ovarian function, which leads to infertility. Si-Wu-Tang (SWT), also called "the first prescription of gynecology" by medical experts in China, is widely used as the basic formula in regulating the menstrual cycle and treating infertility. However, the potential effect and underlying mechanisms of action of SWT on the treatment of POF have not yet been elucidated. PURPOSE: This study aimed to explore the therapeutic effect and underlying molecular mechanism of action of SWT on the treatment of POF in C57BL/6 mice. MATERIALS AND METHODS: The main compounds of SWT were identified by high-performance liquid chromatography (HPLC). POF model groups were established by a single intraperitoneal injection of cyclophosphamide (Cy, 100 mg/kg). SWT or dehydroepiandrosterone (DHEA) were administered via oral gavage for 28 consecutive days. Ovarian function and pathological changes were evaluated by hormone levels, follicular development, and changes in angiogenesis. Furthermore, statistical analyses of fertility were also performed. RESULTS: Treatment with SWT significantly improved estrogen levels, the number of follicles, antioxidant defense, and microvascular formation in POF mice. Moreover, SWT significantly activated the Nrf2/HO-1 and STAT3/HIF-1α/VEGF signaling pathways to promote angiogenesis, resulting in a better fertility outcome when compared to the model group. CONCLUSIONS: Our findings indicated that SWT protected ovarian function of Cy-induced POF mice by improving the antioxidant ability and promoting ovarian angiogenesis, thereby providing scientific evidence for the treatment of POF using SWT.

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