Study of Gonadotropin-Releasing Hormone Pulse Frequency in Sexual Maturation and in the Menstrual Cycle
Colección de datos
Enfermedades de los Huesos+15
+ Enfermedades Óseas del Desarrollo
+ Enfermedades óseas endocrinas
Resumen
Fecha de inicio: 1 de abril de 1993
Fecha en la que se inscribió al primer participante.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.
Protocolo
Esta sección proporciona detalles del plan del estudio, incluyendo cómo está diseñado y qué se está evaluando.Elegibilidad
Los investigadores buscan pacientes que cumplan ciertos criterios, conocidos como criterios de elegibilidad: estado general de salud o tratamientos previos.Cualquier sexo
Sexo biológico de los participantes elegibles para inscribirse.De 7 a 35 años
Rango de edades de los participantes que pueden unirse al estudio.Voluntarios sanos permitidos
Indica si personas sanas, sin la condición que se estudia, pueden participar.Condiciones
Patología
Criterios
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
Centros del Estudio
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University of Michigan Health Systems
Ann Arbor, United StatesAbrir University of Michigan Health Systems en Google Maps