Skip to main page content
U.S. flag

An official website of the United States government

Dot gov

The .gov means it’s official.
Federal government websites often end in .gov or .mil. Before sharing sensitive information, make sure you’re on a federal government site.

Https

The site is secure.
The https:// ensures that you are connecting to the official website and that any information you provide is encrypted and transmitted securely.

Access keys NCBI Homepage MyNCBI Homepage Main Content Main Navigation
Review
. 2025 Aug 18:16:1654372.
doi: 10.3389/fphar.2025.1654372. eCollection 2025.

Metformin in polycystic ovary syndrome: unraveling multi-stage therapeutic mechanisms from puberty to long-term health outcomes

Affiliations
Review

Metformin in polycystic ovary syndrome: unraveling multi-stage therapeutic mechanisms from puberty to long-term health outcomes

Weiwei Zeng et al. Front Pharmacol. .

Abstract

Polycystic ovary syndrome (PCOS) represents a prevalent endocrine disorder affecting reproductive-aged women worldwide, characterized by a variety of reproductive, metabolic, and psychological manifestations. This condition disrupts menstrual cycles and fertility, and significantly compromises quality of life, while increasing the risk of severe health consequences, including cardiovascular diseases and endometrial carcinoma. Although the precise etiology of PCOS remains elusive, genetic and environmental factors are thought to contribute to its pathogenesis. In recent years, the escalating global prevalence of PCOS has been observed, and pharmacological intervention has become the primary treatment approach. Metformin, an insulin sensitizer, has emerged as a valuable treatment option in PCOS management. Multiple studies have suggested that metformin have a positive impact on puberty problems, pregnancy complications, and long-term health outcomes in women with PCOS. However, persistent controversies surround its therapeutic efficacy and underlying molecular mechanisms. This review systematically examines the mechanisms of metformin in ameliorating PCOS-associated infertility, with particular emphasis on its pleiotropic effects across critical life stages-from pubertal development through pregnancy to long-term health outcomes, thereby providing valuable insights into the clinical application of metformin in the treatment of PCOS.

Keywords: drug therapy; infertility; mechanism; metformin; polycystic ovary syndrome.

PubMed Disclaimer

Conflict of interest statement

The authors declare that the research was conducted in the absence of any commercial or financial relationships that could be construed as a potential conflict of interest.

Figures

FIGURE 1
FIGURE 1
Mechanisms of metformin regulation of infertility in polycystic ovary syndrome. Abbreviations: GLUT4: glucose transporter protein 4; FGCs: follicular granulosa cells; PCOS: polycystic ovary syndrome.
FIGURE 2
FIGURE 2
Mechanisms of metformin modulation of endometrial tolerance in polycystic ovary syndrome. Abbreviations: HA: hyperandrogenemia; IR: insulin resistance; GLM: glucose-lipid metabolism; MMP-9: matrix metalloproteinase; PGR: progesterone; AMPK: adenosine monophosphate-activated protein kinase; ROS: reactive oxygen species; AGE: advanced glycation end product; GLUT4: glucose transporter protein 4.
FIGURE 3
FIGURE 3
Management of patients with polycystic ovary syndrome throughout the preconception, gestational, and postpartum periods.
FIGURE 4
FIGURE 4
Regulation of blood glucose by metformin in patients with polycystic ovary syndrome. Abbreviations: OCT: organic cation transporter; IR: insulin resistance; AMPK: adenosine monophosphate-activated protein kinase; LKB1: liver kinase B1; ROS: reactive oxygen species; NR4A1: Nuclear receptor 4A1.
FIGURE 5
FIGURE 5
Mechanism of action of metformin on endometrial cancer. Abbreviations: OCT: organic cation transporter; IR: insulin resistance; IGF-1:insulin-like growth factor-1; IGFR: insulin-like growth factor receptor; Nrf2: nuclear factor erythroid 2-related factor 2; PI3K: phosphatidylinositol 3; AKT: protein kinase B; AMPK: adenosine monophosphate-activated protein kinase; ARE: androgen response element; ATP: adenosine triphosphate; AMP: adenosine monophosphate; RHEB: ras homolog enriched in brain; mTOR: mammalian target of rapamycin. TSC1-TSC2: tuberous sclerosis complex. BLC2L11: protein coding gene; CDH1: Cadherin 1; CDKN1A: cyclin-dependent kinase inhibitor 1A.

Similar articles

References

    1. Abdellatif M., Sedej S., Carmona-Gutierrez D., Madeo F., Kroemer G. (2018). Autophagy in cardiovascular aging. Circ. Res. 123 (7), 803–824. 10.1161/CIRCRESAHA.118.312208 - DOI - PubMed
    1. Abolhassani N., Winterfeld U., Kaplan Y. C., Jaques C., Minder W. B., Del G. C., et al. (2023). Major malformations risk following early pregnancy exposure to metformin: a systematic review and meta-analysis. Bmj Open Diabetes Res. Care 11 (1), e002919. 10.1136/bmjdrc-2022-002919 - DOI - PMC - PubMed
    1. Al-Biate M. A. (2015). Effect of metformin on early pregnancy loss in women with polycystic ovary syndrome. Taiwan J. Obstet. Gynecol. 54 (3), 266–269. 10.1016/j.tjog.2013.06.020 - DOI - PubMed
    1. Alimoradi N., Firouzabadi N., Fatehi R. (2021). Metformin and insulin-resistant related diseases: emphasis on the role of micrornas. Biomed. Pharmacother. 139, 111662. 10.1016/j.biopha.2021.111662 - DOI - PubMed
    1. Amisi C. A. (2022). Markers of insulin resistance in polycystic ovary syndrome women: an update. World J. Diabetes 13 (3), 129–149. 10.4239/wjd.v13.i3.129 - DOI - PMC - PubMed

LinkOut - more resources