This Article Full Text Full Text (PDF) All Versions of this Article: 90/10/5582    most recent Author Manuscript (PDF) Submit a related Letter to the Editor Purchase Article View Shopping Cart Alert me when this article is cited Alert me when eLetters are posted Alert me if a correction is posted Citation Map Services Email this article to a friend Similar articles in this journal Similar articles in PubMed Alert me to new issues of the journal Download to citation manager Request Copyright Permission Citing Articles Citing Articles via HighWire Citing Articles via Google Scholar Google Scholar Articles by Welt, C. K. Articles by Schneyer, A. L. Search for Related Content PubMed PubMed Citation Articles by Welt, C. K. Articles by Schneyer, A. L. Pubmed/NCBI databases Compound via MeSH Substance via MeSH Hazardous Substances DB ESTRADIOL TESTOSTERONE Related Collections Neuroendocrinology and Pituitary Female Endocrinology

Follicular Arrest in Polycystic Ovary Syndrome Is Associated with Deficient Inhibin A and B Biosynthesis

Reproductive Endocrine Unit, Department of Medicine, Massachusetts General Hospital (C.K.W., A.E.T., J.M.A., A.L.S.), Boston, Massachusetts 02114; Department of Obstetrics and Gynecology, Brigham and Women’s Hospital (J.F.), Boston, Massachusetts 02115; and Department of Pathology and Laboratory Medicine, Women and Infants Hospital (G.M.M.), Providence, Rhode Island 02903

Address all correspondence and requests for reprints to: Dr. Corrine K. Welt, Reproductive Endocrine, BHX 511, Massachusetts General Hospital, 55 Fruit Street, Boston, Massachusetts 02114. E-mail: cwelt{at}partners.org.

Context: Previous studies suggest that inhibin subunit expression is decreased in granulosa cells of women with polycystic ovary syndrome (PCOS).

Objective: The objective of this study was to test the hypothesis that inhibin A and inhibin B protein concentrations are also decreased in PCOS follicles.

Design: The design was a parallel study.

Setting: The study was performed at an in vitro fertilization suite.

Participants: We studied women with regular cycles (n = 36) and women with PCOS (n = 8).

Interventions: Follicular fluid was aspirated from the follicles of women with PCOS (n = 14 follicles) and from women with regular cycles at various times during the follicular phase (n = 50 follicles).

Main Outcome Measure: Inhibin A and B concentrations from PCOS follicles were compared with those in size-matched follicles, dominant follicles (10 mm), and subordinate follicles from regularly cycling women.

Results: Inhibin A (220 ± 38 vs. 400 ± 72 IU/ml; P < 0.05) and inhibin B (75.4 ± 10.4 vs. 139 ± 26 ng/ml; P < 0.05) concentrations were lower in the follicular fluid of PCOS follicles compared with those of size-matched follicles from regularly cycling women. Inhibin A was also lower in the follicular fluid of PCOS compared with subordinate follicles from normal women (577 ± 166 IU/ml; P < 0.05). Inhibin A concentrations increased with increasing follicle size, resulting in significantly higher follicular fluid concentrations in dominant follicles from normal women compared with PCOS follicles (2298 ± 228 IU/ml; P < 0.05).

Conclusions: These data demonstrate that inhibin A and inhibin B concentrations are significantly reduced in the follicular fluid of women with PCOS compared with those in the follicular fluid of size-matched follicles from normal women, consistent with the decreased inhibin subunit mRNA expression in previous studies. These findings point to the potential importance of inhibins in normal follicle development and suggest that inhibin deficiency may play a role in the follicle arrest associated with PCOS.

This article has been cited by other articles:

				H. Zhou, N. Ohno, N. Terada, S. Saitoh, I. Naito, and S. Ohno Permselectivity of blood follicle barriers in mouse ovaries of the mifepristone-induced polycystic ovary model revealed by in vivo cryotechnique Reproduction, November 1, 2008; 136(5): 599 - 610. [Abstract] [Full Text] [PDF]

				M. Antenos, M. Stemler, I. Boime, and T. K. Woodruff N-Linked Oligosaccharides Direct the Differential Assembly and Secretion of Inhibin {alpha}- and {beta}A-Subunit Dimers Mol. Endocrinol., July 1, 2007; 21(7): 1670 - 1684. [Abstract] [Full Text] [PDF]

				D. Dewailly, S. Catteau-Jonard, A.-C. Reyss, C. Maunoury-Lefebvre, E. Poncelet, and P. Pigny The excess in 2-5 mm follicles seen at ovarian ultrasonography is tightly associated to the follicular arrest of the polycystic ovary syndrome Hum. Reprod., June 1, 2007; 22(6): 1562 - 1566. [Abstract] [Full Text] [PDF]

				I. E. Messinis Ovarian feedback, mechanism of action and possible clinical implications Hum. Reprod. Update, September 1, 2006; 12(5): 557 - 571. [Abstract] [Full Text] [PDF]

				D. S. Wachs, M. S. Coffler, P. J. Malcom, and R. J. Chang Comparison of Follicle-Stimulating-Hormone-Stimulated Dimeric Inhibin and Estradiol Responses as Indicators of Granulosa Cell Function in Polycystic Ovary Syndrome and Normal Women J. Clin. Endocrinol. Metab., August 1, 2006; 91(8): 2920 - 2925. [Abstract] [Full Text] [PDF]

				P. G. Farnworth, P. G. Stanton, Y. Wang, R. Escalona, J. K. Findlay, and G. T. Ooi Inhibins Differentially Antagonize Activin and Bone Morphogenetic Protein Action in a Mouse Adrenocortical Cell Line Endocrinology, July 1, 2006; 147(7): 3462 - 3471. [Abstract] [Full Text] [PDF]

				S. C. Foong, D. H. Abbott, M. A. Zschunke, T. G. Lesnick, J. L. Phy, and D. A. Dumesic Follicle Luteinization in Hyperandrogenic Follicles of Polycystic Ovary Syndrome Patients Undergoing Gonadotropin Therapy for in Vitro Fertilization J. Clin. Endocrinol. Metab., June 1, 2006; 91(6): 2327 - 2333. [Abstract] [Full Text] [PDF]