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Hum. Reprod. Advance Access originally published online on July 10, 2006
Human Reproduction 2006 21(11):2823-2829; doi:10.1093/humrep/del267
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© The Author 2006. Published by Oxford University Press on behalf of the European Society of Human Reproduction and Embryology. All rights reserved. For Permissions, please email: journals.permissions@oxfordjournals.org

Uterine effects of clomiphene citrate in women with polycystic ovary syndrome: a prospective controlled study

Stefano Palomba1,6, Tiziana Russo1, Francesco Orio, Jr2, Angela Falbo1, Francesco Manguso3, Annalidia Sammartino4, Achille Tolino4, Annamaria Colao2, Enrico Carmina5 and Fulvio Zullo1

1 Department of Obstetrics & Gynecology, University ‘Magna Graecia’ of Catanzaro, Catanzaro 2 Department of Molecular & Clinical Endocrinology and Oncology 3 Department of Clinical and Experimental Medicine 4 Department of Obstetrics & Gynecology, University ‘Federico II’ of Naples, Naples and 5 Department of Endocrinology, University of Palermo, Palermo, Italy

6 To whom correspondence should be addressed at: Department of Gynecology & Obstetrics, University ‘Magna Graecia’ of Catanzaro, Via M. Greco 10, 88100 Catanzaro, Italy. E-mail: stefanopalomba{at}tin.it

BACKGROUND: Previous data on the efficacy of clomiphene citrate, the most commonly used drug for treating anovulatory infertility in patients with polycystic ovary syndrome (PCOS), have shown a discrepancy between ovulation and pregnancy rates. In the present subanalysis (of a larger previously published randomized controlled trial), the effect of clomiphene citrate on several ultrasonographic markers of uterine receptivity in PCOS patients who ovulated under treatment was studied. METHODS: Thirty-three PCOS women who ovulated under 150 mg daily clomiphene citrate and 33 healthy controls were studied. Uterine, subendometrial and endometrial blood flows, endometrial thickness and pattern were assessed using serial ultrasonographic assessments. The data were analysed before and after grouping the clomiphene citrate-stimulated ovulatory cycles for reproductive outcome [unfavourable (ovulation alone or early pregnancy loss) or favourable outcome (clinical pregnancy and/or live birth)]. RESULTS: Both before and during treatment, uterine vascularity assessed at all sites was significantly lower in the PCOS group than in controls. Endometrial thickness and pattern were impaired in the PCOS group under clomiphene citrate treatment. A significant difference in all ultrasonographic parameters was observed between cycles ending in unfavourable versus those ended in favourable outcome. CONCLUSIONS: Clomiphene citrate administration alters several surrogate ultrasonographic parameters of uterine receptivity, and this effect could be crucial for its efficacy.

Key words: anovulation/clomiphene citrate/Doppler/PCOS/velocimetry


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 J. Clin. Endocrinol. Metab.Home page
S. Palomba, F. Orio Jr., A. Falbo, T. Russo, A. Tolino, and F. Zullo
Clomiphene Citrate Versus Metformin as First-Line Approach for the Treatment of Anovulation in Infertile Patients with Polycystic Ovary Syndrome
J. Clin. Endocrinol. Metab., September 1, 2007; 92(9): 3498 - 3503.
[Abstract] [Full Text] [PDF]


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