The Unit on Reproductive Endocrinology and Infertility, led by James Segars, investigates underlying causes and effectiveness of treatment for a variety of clinical reproductive disorders. This unit has the mission to conduct basic, translational, and clinical studies of importance to reproduction in the context of the multi-institutional clinical training program in Reproductive Endocrinology and Infertility. In the past year, we have continued our research on two very prevalent disorders of reproduction, uterine fibroids (also known as leiomyoma), and endometriosis. Our previous studies have revealed that genes producing the extracellular matrix (connective tissue between cells) were expressed at abnormal levels in uterine fibroids. In the past year, we have found that the extracellular matrix of uterine fibroids is abnormal is abnormally-formed, as the collagen fibers are randomly oriented and widely spaced in fibroids, compared to the compact fibers in normal uterine tissues. This finding suggests that the extracellular matrix deposited in fibroids may not be easily degraded, and might contribute to growth of the tumors. As planned, we have begun a study involving non-surgical treatment of fibroids in collaboration with investigators at the NIH Clinical Center, the National Cancer Institute and the National Institute of Environmental Health Sciences. In the ongoing collaborative study with Drs. Heiner Westphal, Chrousos, and Kino experiments have suggested a physiologic role for Brx in and related proteins in hormone action. As infertility and endometriosis affect many women attempting to have children, we continue to conduct clinical studies of endometriosis and infertility in an effort to optimize outcome of treatment for couples experiencing endometriosis or infertility.

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Support Year
5
Fiscal Year
2005
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Indirect Cost
Name
U.S. National Inst/Child Hlth/Human Dev
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Country
United States
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Chason, Rebecca J; Kang, Jung-Hoon; Gerkowicz, Sabrina A et al. (2015) GnRH agonist reduces estrogen receptor dimerization in GT1-7 cells: evidence for cross-talk between membrane-initiated estrogen and GnRH signaling. Mol Cell Endocrinol 404:67-74
Thorne, Jeffrey T; Segal, Thalia R; Chang, Sydney et al. (2015) Dynamic reciprocity between cells and their microenvironment in reproduction. Biol Reprod 92:25
Jorge, Soledad; Chang, Sydney; Barzilai, Joshua J et al. (2014) Mechanical signaling in reproductive tissues: mechanisms and importance. Reprod Sci 21:1093-107
Segars, James H (2014) Uterine fibroid research: a work in progress. Reprod Sci 21:1065-6
Connell, Mt; Owen, Cm; Segars, Jh (2013) Genetic Syndromes and Genes Involved in the Development of the Female Reproductive Tract: A Possible Role for Gene Therapy. J Genet Syndr Gene Ther 4:
Norian, John M; Owen, Carter M; Taboas, Juan et al. (2012) Characterization of tissue biomechanics and mechanical signaling in uterine leiomyoma. Matrix Biol 31:57-65
Beall, Stephanie A; DeCherney, Alan (2012) History and challenges surrounding ovarian stimulation in the treatment of infertility. Fertil Steril 97:795-801
Batcheller, April; Cardozo, Eden; Maguire, Marcy et al. (2011) Are there subtle genome-wide epigenetic alterations in normal offspring conceived by assisted reproductive technologies? Fertil Steril 96:1306-11
Browne, Hyacinth N; Moon, Kimberly S; Mumford, Sunni L et al. (2011) Is anti-Müllerian hormone a marker of acute cyclophosphamide-induced ovarian follicular destruction in mice pretreated with cetrorelix? Fertil Steril 96:180-186.e2
Mayers, Chantal M; Wadell, Jennifer; McLean, Kate et al. (2010) The Rho guanine nucleotide exchange factor AKAP13 (BRX) is essential for cardiac development in mice. J Biol Chem 285:12344-54

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