Investigating the Regulation of Reproductive Hormones in Adult Men

NCT00392457 | Completed

• 2 other identifiers: R01 HD15788 - 234R01HD015788
• Study Type: interventional
• Target: 175
• Locations: 1 country
• Sites: 1

Brief Summary

The purpose of the research study is to learn more about the regulation of reproductive hormones in adult men. We would like to understand what role testosterone and estradiol play in controlling the release of LH (lutenizing hormone) and FSH (follicle stimulating hormone). Testosterone and estradiol come from the testes, and LH and FSH are released from a gland in the head called the pituitary. Men involved in the study will have detailed evaluations that involve overnight stays in the hospital and frequent blood sampling. The men in the study will also be receiving medications that affect the levels of various hormones in the body. This will allow the researchers to learn how various hormones influence each other. Men that participate in the study will receive medical evaluations and monetary compensation. Information gathered from this study will help in the development of new treatments for infertility and potentially new hormonal forms of contraception.

Conditions

Kallmann Syndrome; Hypogonadism; Gonadal Disorder

Keywords

Idiopathic Hypogonadotropic Hypogonadism; Kallmann Syndrome; Agonadal

Outcome Measures

Primary Outcomes (1)

• serum hormone levels

  Baseline, Day 3, and Day 6

Interventions

ketoconazole DRUG

loading dose of 1g followed by a maintenance dose of 400 mg PO QID for 7 days

gonadotropin releasing hormone (GnRH) DRUG

Pulsatile GnRH (25 ng/kg per bolus every two hours via microinfusion pump titrated to reach normal serum testosterone levels)

Eligibility Criteria

• Age: 18 Years - 50 Years
• Sex: male
• Healthy Volunteers: Yes
• Age Groups: Adult (18-64)

You may qualify if:

• Men aged 18 to 50 years
• In good health
• On no medications

You may not qualify if:

• Subjects will not be enrolled in this study if there is a history of:
• Liver disease or if screening blood tests demonstrate abnormal liver function tests
• Excessive alcohol consumption
• Illicit drug use
• Severe drug allergy
• Use of any concomitant medications
• Peptic ulcer disease or gastritis

Sponsors & Collaborators

• Eunice Kennedy Shriver National Institute of Child Health and Human Development (NICHD): lead

Study Sites (1)

Massachusetts General Hospital

Boston, Massachusetts, 02114-2696, United States

Location

Related Publications (25)

• Howards SS. Treatment of male infertility. N Engl J Med. 1995 Feb 2;332(5):312-7. doi: 10.1056/NEJM199502023320507. No abstract available.

  PMID: 7816068 BACKGROUND

• Ying SY. Inhibins, activins, and follistatins: gonadal proteins modulating the secretion of follicle-stimulating hormone. Endocr Rev. 1988 May;9(2):267-93. doi: 10.1210/edrv-9-2-267.

  PMID: 3136011 BACKGROUND

• Khoury RH, Wang QF, Crowley WF Jr, Hall JE, Schneyer AL, Toth T, Midgley AR Jr, Sluss PM. Serum follistatin levels in women: evidence against an endocrine function of ovarian follistatin. J Clin Endocrinol Metab. 1995 Apr;80(4):1361-8. doi: 10.1210/jcem.80.4.7714112.

  PMID: 7714112 BACKGROUND

• Hayes FJ, Hall JE, Boepple PA, Crowley WF Jr. Clinical review 96: Differential control of gonadotropin secretion in the human: endocrine role of inhibin. J Clin Endocrinol Metab. 1998 Jun;83(6):1835-41. doi: 10.1210/jcem.83.6.4884.

  PMID: 9626105 BACKGROUND

• Santen RJ. Is aromatization of testosterone to estradiol required for inhibition of luteinizing hormone secretion in men? J Clin Invest. 1975 Dec;56(6):1555-63. doi: 10.1172/JCI108237.

  PMID: 1104659 BACKGROUND

• Winters SJ, Janick JJ, Loriaux DL, Sherins RJ. Studies on the role of sex steroids in the feedback control of gonadotropin concentrations in men. II. Use of the estrogen antagonist, clomiphene citrate. J Clin Endocrinol Metab. 1979 Feb;48(2):222-7. doi: 10.1210/jcem-48-2-222. No abstract available.

  PMID: 372203 BACKGROUND

• Matsumoto AM, Bremner WJ. Modulation of pulsatile gonadotropin secretion by testosterone in man. J Clin Endocrinol Metab. 1984 Apr;58(4):609-14. doi: 10.1210/jcem-58-4-609.

  PMID: 6421864 BACKGROUND

• Finkelstein JS, Whitcomb RW, O'Dea LS, Longcope C, Schoenfeld DA, Crowley WF Jr. Sex steroid control of gonadotropin secretion in the human male. I. Effects of testosterone administration in normal and gonadotropin-releasing hormone-deficient men. J Clin Endocrinol Metab. 1991 Sep;73(3):609-20. doi: 10.1210/jcem-73-3-609.

  PMID: 1908484 BACKGROUND

• Finkelstein JS, O'Dea LS, Whitcomb RW, Crowley WF Jr. Sex steroid control of gonadotropin secretion in the human male. II. Effects of estradiol administration in normal and gonadotropin-releasing hormone-deficient men. J Clin Endocrinol Metab. 1991 Sep;73(3):621-8. doi: 10.1210/jcem-73-3-621.

  PMID: 1908485 BACKGROUND

• Bagatell CJ, Dahl KD, Bremner WJ. The direct pituitary effect of testosterone to inhibit gonadotropin secretion in men is partially mediated by aromatization to estradiol. J Androl. 1994 Jan-Feb;15(1):15-21.

  PMID: 8188534 BACKGROUND

• Groome NP, Illingworth PJ, O'Brien M, Pai R, Rodger FE, Mather JP, McNeilly AS. Measurement of dimeric inhibin B throughout the human menstrual cycle. J Clin Endocrinol Metab. 1996 Apr;81(4):1401-5. doi: 10.1210/jcem.81.4.8636341.

  PMID: 8636341 BACKGROUND

• Majumdar SS, Mikuma N, Ishwad PC, Winters SJ, Attardi BJ, Perera AD, Plant TM. Replacement with recombinant human inhibin immediately after orchidectomy in the hypophysiotropically clamped male rhesus monkey (Macaca mulatta) maintains follicle-stimulating hormone (FSH) secretion and FSH beta messenger ribonucleic acid levels at precastration values. Endocrinology. 1995 May;136(5):1969-77. doi: 10.1210/endo.136.5.7720645.

  PMID: 7720645 BACKGROUND

• Culler MD, Negro-Vilar A. Passive immunoneutralization of endogenous inhibin: sex-related differences in the role of inhibin during development. Mol Cell Endocrinol. 1988 Aug;58(2-3):263-73. doi: 10.1016/0303-7207(88)90163-3.

  PMID: 3145231 BACKGROUND

• Veldhuis JD, Johnson ML. Cluster analysis: a simple, versatile, and robust algorithm for endocrine pulse detection. Am J Physiol. 1986 Apr;250(4 Pt 1):E486-93. doi: 10.1152/ajpendo.1986.250.4.E486.

  PMID: 3008572 BACKGROUND

• Heel RC, Brogden RN, Carmine A, Morley PA, Speight TM, Avery GS. Ketoconazole: a review of its therapeutic efficacy in superficial and systemic fungal infections. Drugs. 1982 Jan-Feb;23(1-2):1-36. doi: 10.2165/00003495-198223010-00001. No abstract available.

  PMID: 6276122 BACKGROUND

• Pont A, Graybill JR, Craven PC, Galgiani JN, Dismukes WE, Reitz RE, Stevens DA. High-dose ketoconazole therapy and adrenal and testicular function in humans. Arch Intern Med. 1984 Nov;144(11):2150-3.

  PMID: 6093722 BACKGROUND

• Sonino N. The use of ketoconazole as an inhibitor of steroid production. N Engl J Med. 1987 Sep 24;317(13):812-8. doi: 10.1056/NEJM198709243171307. No abstract available.

  PMID: 3306384 BACKGROUND

• Van Tyle JH. Ketoconazole. Mechanism of action, spectrum of activity, pharmacokinetics, drug interactions, adverse reactions and therapeutic use. Pharmacotherapy. 1984 Nov-Dec;4(6):343-73. doi: 10.1002/j.1875-9114.1984.tb03398.x.

  PMID: 6151171 BACKGROUND

• Lewis JH, Zimmerman HJ, Benson GD, Ishak KG. Hepatic injury associated with ketoconazole therapy. Analysis of 33 cases. Gastroenterology. 1984 Mar;86(3):503-13.

  PMID: 6319220 BACKGROUND

• Duarte PA, Chow CC, Simmons F, Ruskin J. Fatal hepatitis associated with ketoconazole therapy. Arch Intern Med. 1984 May;144(5):1069-70.

  PMID: 6324708 BACKGROUND

• van Dijke CP, Veerman FR, Haverkamp HC. Anaphylactic reactions to ketoconazole. Br Med J (Clin Res Ed). 1983 Dec 3;287(6406):1673. doi: 10.1136/bmj.287.6406.1673. No abstract available.

  PMID: 6315129 BACKGROUND

• Janssen PA, Symoens JE. Hepatic reactions during ketoconazole treatment. Am J Med. 1983 Jan 24;74(1B):80-5. doi: 10.1016/0002-9343(83)90519-3.

  PMID: 6129799 BACKGROUND

• Pitteloud N, Dwyer AA, DeCruz S, Lee H, Boepple PA, Crowley WF Jr, Hayes FJ. Inhibition of luteinizing hormone secretion by testosterone in men requires aromatization for its pituitary but not its hypothalamic effects: evidence from the tandem study of normal and gonadotropin-releasing hormone-deficient men. J Clin Endocrinol Metab. 2008 Mar;93(3):784-91. doi: 10.1210/jc.2007-2156. Epub 2007 Dec 11.

  PMID: 18073301 RESULT

• Boepple PA, Hayes FJ, Dwyer AA, Raivio T, Lee H, Crowley WF Jr, Pitteloud N. Relative roles of inhibin B and sex steroids in the negative feedback regulation of follicle-stimulating hormone in men across the full spectrum of seminiferous epithelium function. J Clin Endocrinol Metab. 2008 May;93(5):1809-14. doi: 10.1210/jc.2007-2450. Epub 2008 Feb 12.

  PMID: 18270253 RESULT

• Pitteloud N, Dwyer AA, DeCruz S, Lee H, Boepple PA, Crowley WF Jr, Hayes FJ. The relative role of gonadal sex steroids and gonadotropin-releasing hormone pulse frequency in the regulation of follicle-stimulating hormone secretion in men. J Clin Endocrinol Metab. 2008 Jul;93(7):2686-92. doi: 10.1210/jc.2007-2548. Epub 2008 Apr 29.

  PMID: 18445673 RESULT

Related Links

• Clinical research studies of the Reproductive Endocrine Unit at the Massachusetts General Hospital. Click here for more information about this study: Feedback Control of FSH Secretion in the Human Male

MeSH Terms

Conditions

Kallmann Syndrome; Hypogonadism; Gonadal Disorders; Idiopathic Hypogonadotropic Hypogonadism

Interventions

Ketoconazole; Gonadotropin-Releasing Hormone

Condition Hierarchy (Ancestors)

Disorder of Sex Development, 46,XY; Disorders of Sex Development; Urogenital Abnormalities; Female Urogenital Diseases; Female Urogenital Diseases and Pregnancy Complications; Urogenital Diseases; Male Urogenital Diseases; Congenital Abnormalities; Congenital, Hereditary, and Neonatal Diseases and Abnormalities; Genetic Diseases, Inborn; Endocrine System Diseases

Intervention Hierarchy (Ancestors)

Piperazines; Heterocyclic Compounds, 1-Ring; Heterocyclic Compounds; Pituitary Hormone-Releasing Hormones; Hypothalamic Hormones; Peptide Hormones; Hormones; Hormones, Hormone Substitutes, and Hormone Antagonists; Neuropeptides; Peptides; Amino Acids, Peptides, and Proteins; Oligopeptides; Nerve Tissue Proteins; Proteins

Study Officials

• William F Crowley, Jr., MD

  Massachusetts General Hospital

  PRINCIPAL INVESTIGATOR

Study Design

• Study Type: interventional
• Phase: not applicable
• Allocation: RANDOMIZED
• Masking: NONE
• Purpose: HEALTH SERVICES RESEARCH
• Intervention Model: PARALLEL
• Sponsor Type: NIH

Study Record Dates

• First Submitted: October 25, 2006
• First Posted: October 26, 2006
• Study Start: July 1, 1995
• Primary Completion: February 1, 2007
• Study Completion: February 1, 2007
• Last Updated: February 16, 2015

Record last verified: 2010-04

Locations

US (1)