TY - JOUR KW - Amenorrhea/metabolism KW - Analgesics, Opioid/metabolism KW - Animals KW - Female KW - Gonadal Steroid Hormones/metabolism KW - Humans KW - Models, Biological KW - Ovarian Hyperstimulation Syndrome/metabolism KW - Ovary/metabolism KW - Pregnancy/metabolism KW - Reproduction/physiology KW - endogenous opioids KW - hypothalamic amenorrhea KW - Naltrexone KW - polycystic ovary syndrome KW - reproductive hormone axis KW - beta-Endorphin AU - Bettina Bottcher AU - Beata Seeber AU - Gerhard Leyendecker AU - Ludwig Wildt A1 - AD - Department of Gynecological Endocrinology and Reproductive Medicine, Medical University Innsbruck, Innsbruck, Austria.; Department of Gynecological Endocrinology and Reproductive Medicine, Medical University Innsbruck, Innsbruck, Austria.; Kinderwunschzentrum Darmstadt, Darmstadt, Germany.; Department of Gynecological Endocrinology and Reproductive Medicine, Medical University Innsbruck, Innsbruck, Austria. Electronic address: ludwig.wildt@i-med.ac.at. BT - Fertility and sterility C5 - Healthcare Disparities; Opioids & Substance Use CP - 2 CY - United States IS - 2 JF - Fertility and sterility LA - eng M1 - Journal Article PB - American Society for Reproductive Medicine. Published by Elsevier Inc PP - United States PY - 2017 SN - 1556-5653; 0015-0282 SP - 207 EP - 213 EP - T1 - Impact of the opioid system on the reproductive axis T2 - Fertility and sterility TI - Impact of the opioid system on the reproductive axis U1 - Healthcare Disparities; Opioids & Substance Use U2 - 28669481 VL - 108 VO - 1556-5653; 0015-0282 Y1 - 2017 Y2 - Aug ER -