The follicle-stimulating hormone threshold level for follicle maturation in superovulated cycles
Φόρτωση...
Ημερομηνία
Συγγραφείς
Lolis, D. E.
Tsolas, O.
Messinis, I. E.
Τίτλος Εφημερίδας
Περιοδικό ISSN
Τίτλος τόμου
Εκδότης
Περίληψη
Τύπος
Είδος δημοσίευσης σε συνέδριο
Είδος περιοδικού
peer-reviewed
Είδος εκπαιδευτικού υλικού
Όνομα συνεδρίου
Όνομα περιοδικού
Fertil Steril
Όνομα βιβλίου
Σειρά βιβλίου
Έκδοση βιβλίου
Συμπληρωματικός/δευτερεύων τίτλος
Περιγραφή
OBJECTIVE: To compare the FSH threshold level for follicle growth up to the preovulatory stage between superovulated and natural cycles. DESIGN: Normally cycling women were investigated during an untreated spontaneous cycle (control) and three cycles treated with FSH. SETTING: Infertility clinic in a university hospital. PATIENTS: Thirteen normally ovulating women with unexplained infertility. INTERVENTIONS: Follicle-stimulating hormone was injected at the single dose of six ampules on cycle day 2 without extra FSH (FSH + 0 cycle) or with extra FSH from cycle day 4 onward at the daily dose of either one ampule (FSH + 1 cycle) or two ampules (FSH + 2 cycle). MAIN OUTCOME MEASURES: Serum FSH and E2 during the follicular phase. Number of follicles and growth rate by ultrasound. RESULTS: Multiple follicular development occurred in all FSH treated cycles. In these cycles the growth rate of the first (dominant) follicle was similar to that in the control cycles. In the presence of physiological concentrations of FSH (control and FSH + 0 cycles), only one follicle was > 15 mm at midcycle. When serum FSH values increased (FSH + 1 and FSH + 2 cycles), the growth rate of the second and third in order follicles and subsequently the number of the preovulatory follicles (> 15 mm) increased in proportion to the FSH increment. CONCLUSIONS: Follicles recruited by exogenous FSH in the early follicular phase of the cycle require supraphysiological concentrations of FSH throughout the follicular phase to become preovulatory. The extra FSH acts through an increase in the growth rate of these follicles.
Περιγραφή
Λέξεις-κλειδιά
Estradiol/blood, Female, Follicle Stimulating Hormone/*administration & dosage/blood/pharmacology, Follicular Phase/*physiology, Humans, Infertility, Female, Ovarian Follicle/*physiology/ultrasonography, *Superovulation
Θεματική κατηγορία
Παραπομπή
Σύνδεσμος
http://www.ncbi.nlm.nih.gov/pubmed/7750600
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