Changes in pituitary response to GnRH during the luteal-follicular transition of the human menstrual cycle
Φόρτωση...
Ημερομηνία
Τίτλος Εφημερίδας
Περιοδικό ISSN
Τίτλος τόμου
Εκδότης
Περίληψη
Τύπος
Είδος δημοσίευσης σε συνέδριο
Είδος περιοδικού
peer-reviewed
Είδος εκπαιδευτικού υλικού
Όνομα συνεδρίου
Όνομα περιοδικού
Clin Endocrinol (Oxf)
Όνομα βιβλίου
Σειρά βιβλίου
Έκδοση βιβλίου
Συμπληρωματικός/δευτερεύων τίτλος
Περιγραφή
OBJECTIVE: We studied changes in pituitary response to GnRH during the luteal-follicular transition of the human menstrual cycle. DESIGN: Normally cycling women were investigated during two consecutive menstrual cycles. In each woman, GnRH tests were performed during the two LH surges and several times during the luteal-follicular transition. Data for analysis were available in all women on days -8, -6, -4, -2, -1, 1, 2, 3, 4, 5 and 7 in relation to the onset of second menstruation (day 1). PATIENTS: Five normally ovulating parous women were studied. MEASUREMENTS: Pituitary response to GnRH was calculated as the net increase in LH and FSH at 30 minutes (delta LH and delta FSH) above the basal value. RESULTS: delta LH and delta FSH showed a similar pattern of significant changes during the luteal-follicular transition. They decreased progressively from days -8 to 1 and increased on day 2. delta LH and delta FSH then decreased on days 3 and 4 and showed a further increase on days 5 and 7. In contrast to these changes, basal FSH levels increased from days -2 to 1 and remained high up to day 5, while basal LH levels showed a trend to increase only after the onset of menses. CONCLUSIONS: These results demonstrate that the increase in basal FSH secretion during the luteal-follicular transition is GnRH independent. It is suggested that LH and FSH release under the stimulation by GnRH is regulated by a common mechanism.
Περιγραφή
Λέξεις-κλειδιά
Adult, Female, Follicle Stimulating Hormone/*secretion, Growth Hormone-Releasing Hormone/*pharmacology, Humans, Luteinizing Hormone/*secretion, Menstrual Cycle/*metabolism, Pituitary Gland/drug effects/*secretion, Stimulation, Chemical
Θεματική κατηγορία
Παραπομπή
Σύνδεσμος
http://www.ncbi.nlm.nih.gov/pubmed/8435896
http://onlinelibrary.wiley.com/store/10.1111/j.1365-2265.1993.tb00988.x/asset/j.1365-2265.1993.tb00988.x.pdf?v=1&t=h2d2zi1e&s=8f1f5197cec7922f408061a25a28f3fdaf65ad1c
http://onlinelibrary.wiley.com/store/10.1111/j.1365-2265.1993.tb00988.x/asset/j.1365-2265.1993.tb00988.x.pdf?v=1&t=h2d2zi1e&s=8f1f5197cec7922f408061a25a28f3fdaf65ad1c
Γλώσσα
en
Εκδίδον τμήμα/τομέας
Όνομα επιβλέποντος
Εξεταστική επιτροπή
Γενική Περιγραφή / Σχόλια
Ίδρυμα και Σχολή/Τμήμα του υποβάλλοντος
Πανεπιστήμιο Ιωαννίνων. Σχολή Επιστημών Υγείας. Τμήμα Ιατρικής