Study of Gonadotropin-Releasing Hormone Pulse Frequency in Sexual Maturation and in the Menstrual Cycle
Collecte de données
Maladies osseuses+17
+ Maladies Osseuses Développementales
+ Maladies endocriniennes des os
Résumé
Date de début de l'étude : 1 avril 1993
Date à laquelle le premier participant a commencé l'étude.PROTOCOL OUTLINE: This project involves several clinical protocols that study the regulation and role of pulsatile gonadotropin-releasing hormone (GnRH) secretion. Studies include dynamic and repeated stimulation tests of pulsatile GnRH; plasma luteinizing hormone, follicular-stimulating hormone, testosterone (T), estradiol (E2), and GnRH measurements at cyclic and episodic intervals; and evaluation of adrenal androgen patterns. Circadian rhythms of GnRH secretion are monitored during sleep and awake hours. Growth hormone secretory patterns and responses to provocative stimuli are studied as clinically indicated. Selected participants undergo an assessment of pituitary responsiveness following T, E2, and/or naloxone infusions. The suppressive effects of E2 are also studied during the early follicular phase of the menstrual cycle. Endocrinologically normal children and normal adult men and women are also studied.
Protocole
Cette section fournit des détails sur le plan de l'étude, y compris la manière dont l'étude est conçue et ce qu'elle évalue.Éligibilité
Les chercheurs recherchent des patients correspondant à une certaine description appelée critères d'éligibilité : état de santé général ou traitements antérieurs du patient.Tout sexe
Le sexe biologique des participants éligibles à s'inscrire.De 7 à 35 ans
Tranche d'âge des participants éligibles à participer.Volontaires sains autorisés
Indique si les individus en bonne santé et ne présentant pas la condition étudiée peuvent participer.Conditions
Pathologie
Critères
PROTOCOL ENTRY CRITERIA: --Disease Characteristics-- Suspected or proven hypothalamic-pituitary-gonadal dysfunction, i.e.: Significant short stature and possible hypopituitarism Delayed adolescence Precocious puberty Isolated growth hormone deficiency (IGHD)Primary hypogonadism Women are also studied, including those with the following disorders: Infertility Oligo- or amenorrhea Hirsutism --Patient Characteristics-- Age: 7 to 16 (18 to 35 for women and volunteers) Other: No pregnant or nursing women No prisoners Not in neuropsychiatric institute or other facility for mental illness
Centres d'étude
Ce sont les hôpitaux, cliniques ou centres de recherche où l'essai est conduit. Vous pouvez trouver le site le plus proche de vous ainsi que son statut.Cette étude comporte 1 site
University of Michigan Health Systems
Ann Arbor, United StatesOuvrir University of Michigan Health Systems dans Google Maps