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Metformin Effects on Clinical Features, Endocrine and Metabolic Profiles, and Insulin Sensitivity in Polycystic Ovary Syndrome: A Randomized, Double-Blind, Placebo-Controlled 6-Month Trial, Followed by Open, Long-Term Clinical Evaluation
Abstract
Insulin resistance is a common feature of polycystic ovary syndrome (PCOS) regardless of whether patients are obese. There is evidence that the associated hyperinsulinemia contributes to development of the condition, suggesting that insulin-sensitizing drugs, such as metformin, might have therapeutic value. Reduced serum androgen levels have been reported in women with PCOS who were given metformin. The present randomized, double-blind, placebo-controlled study evaluated a 6-month course of metformin in 23 women aged 18 to 35 years with PCOS but normal glucose tolerance. A large majority were overweight. Women were assigned to receive either placebo capsules or metformin in a daily dose of 500 mg the first week, 1000 mg the second, and 1500 mg (three 500-mg capsules) for the next 24 weeks. Eighteen of these women and 14 others then participated in an open trial of metformin, the dose being increased stepwise as in the double-blind phase. Insulin sensitivity was estimated by the euglycemic hyperinsulinemic glucose clamp technique. Serum levels of free testosterone declined significantly with metformin treatment in the double-blind study. Both groups had a slight fall in body mass index, and there was no substantial change in hirsutism scores. Only one patient required dose reduction because of an adverse reaction. Menstruation was significantly more frequent during metformin therapy. Treatment correlated with a lower serum 17-hydroxyprogesterone response to buserelin. Fasting…
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Metformin reduces insulin resistance in type 2 diabetes and in adults and adolescents with PCOS when hyperinsulinaemic euglycaemic clamps are used.
“Metformin clearly reduces insulin resistance in DM2and in adults and adolescents with PCOS when hyperinsulinaemic euglycaemic clamps were used (Moghetti et al. , 2000; Meyer et al. , 2007; Arslanian et al. , 2002).”
From Metformin and lifestyle modification in polycystic ovary syndrome: systematic review and meta-analysis (2015) · cites this paper as Moghetti et al. , 2000
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Ovulatory and Metabolic Effects of d-Chiro-Inositol in the Polycystic Ovary Syndrome
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Polycystic ovary syndrome: etiology, pathogenesis and diagnosis
Goodarzi, M. O., Dumesic, D. A., Chazenbalk, G., & Azziz, R. (2011) · Nature Reviews Endocrinology · doi:10.1038/nrendo.2010.217 · Cited by 1,488
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Characteristics of obesity in polycystic ovary syndrome: Etiology, treatment, and genetics
Glueck, C. J., & Goldenberg, N. (2019) · Metabolism · doi:10.1016/j.metabol.2018.11.002 · Cited by 442
Cassar, S., Misso, M. L., Hopkins, W. G., Shaw, C. S., Teede, H. J., & Stepto, N. K. (2016) · Human Reproduction · doi:10.1093/humrep/dew243 · Cited by 415
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Meta-analysis: metformin treatment in persons at risk for diabetes mellitus
Salpeter, S. R., Buckley, N. S., Kahn, J. A., & Salpeter, E. E. (2008) · The American Journal of Medicine · doi:10.1016/j.amjmed.2007.09.016 · Cited by 248
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The management of patients with polycystic ovary syndrome
Jayasena, C. N., & Franks, S. (2014) · Nature Reviews Endocrinology · doi:10.1038/nrendo.2014.102 · Cited by 196
Ibáñez, L., Ong, K., Ferrer, A., Amin, R., Dunger, D., & de Zegher, F. (2003) · The Journal of Clinical Endocrinology & Metabolism · doi:10.1210/jc.2002-022002 · Cited by 100
Hirsutism: an evidence-based treatment update
Somani, N., & Turvy, D. (2014) · American Journal of Clinical Dermatology · doi:10.1007/s40257-014-0078-4 · Cited by 69
Romualdi, D., Giuliani, M., Cristello, F., Fulghesu, A. M., Selvaggi, L., Lanzone, A., & Guido, M. (2010) · Fertility and Sterility · doi:10.1016/j.fertnstert.2009.01.114 · Cited by 58
Kjøtrød, S. B., Sunde, A., von Düring, V., & Carlsen, S. M. (2009) · Fertility and Sterility · doi:10.1016/j.fertnstert.2007.11.069 · Cited by 22
Metadata
- Authors
- Moghetti, P., Castello, R., Negri, C., Tosi, F., Perrone, F., Caputo, M., Zanolin, E., & Muggeo, M.
- Affiliations
- University of Verona (IT)
- Venue
- Obstetrical & Gynecological Survey
- Published
- 2000-06
- Volume
- 55
- Issue
- 6
- Pages
- 365-366
- ISSN
- 0029-7828 (ISSN-L)
- OpenAlex
- W2011754459
- Cited by
- 158
- References
- 4
- Citations by year
- 2025: 3 · 2024: 6 · 2023: 6 · 2022: 10 · 2021: 14 · 2020: 3 · 2019: 5 · 2018: 9 · 2017: 9 · 2016: 4 · 2015: 3 · 2014: 3 · 2013: 2 · 2012: 5
- FWCI
- 10.32
- Type
- journal article
- Language
- en
- Open access
- closed
- Locations
- Obstetrical & Gynecological Survey (publishedVersion)
- Topics
- Health Sciences › Medicine › Reproductive Medicine › Ovarian function and disorders
- Health Sciences › Medicine › Endocrinology, Diabetes and Metabolism › Diabetes, Cardiovascular Risks, and Lipoproteins
- Life Sciences › Biochemistry, Genetics and Molecular Biology › Genetics › Genetic and Kidney Cyst Diseases
- Keywords
- metformin, polycystic ovary syndrome, insulin resistance, insulin sensitivity, hyperinsulinemia, free testosterone, androgen levels, menstrual cycle regularity, ovulation, buserelin, 17-hydroxyprogesterone, hirsutism, body mass index, HDL cholesterol, insulin-sensitizing drugs, long-term follow-up, women of reproductive age
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