Follicular fluid hormone concentrations after ovarian stimulation using gonadotropin preparations with different FSH/LH ratios. I. Comparison of an FSH-dominant and a purified FSH preparation.
OBJECTIVE
A small amount of LH is necessary for 17beta-estradiol production in the ovarian follicle. Human menopausal gonadotropin (hMG) contains equal amounts of FSH and LH activity, whereas recombinant FSH is a gonadotropin preparation without LH. The aim of the present randomized study was to investigate whether ovarian stimulation treatment with recombinant FSH or hMG resulted in different steroidal composition of follicular fluid.


METHODS
Antral fluid from mature follicles was collected in in vitro fertilization cycles and concentrations of testosterone, androstenedione, estrone, estradiol, progesterone, FSH, and LH were determined. Seven patients (27 samples) were treated with hMG, 6 patients (22 samples) with recombinant FSH.


RESULTS
Androgen, estrogen, progesterone, and FSH concentrations in follicular fluid tended to be lower in the group treated with recombinant FSH, but the variation was large and differences were statistically not significant.


CONCLUSIONS
Treatment with a gonadotropin preparation containing no LH resulted in adequate androgen and estrogen levels in antral fluid of the ovarian follicle in women with normal endocrine profiles, even during pituitary suppression by a GnRH agonist. Apparently, the amount of endogenous LH was sufficient for steroid production within the follicle.
Duijkers
I J
IJ
Department of Obstetrics and Gynecology, University Hospital Nijmegen St. Radboud, The Netherlands.
Willemsen
W N
WN
Hollanders
H M
HM
Hamilton
C J
CJ
Thomas
C M
CM
Vemer
H M
HM
D000328:Adult; D004338:Drug Combinations; D005260:Female; D005300:Fertility Agents, Female / Q000008:administration & dosage / Q000494:pharmacology; D005307:Fertilization in Vitro / Q000379:methods; D015200:Fluoroimmunoassay; D005640:Follicle Stimulating Hormone / Q000008:administration & dosage / Q000494:pharmacology*; D015571:Follicular Fluid / Q000378:metabolism*; D012739:Gonadal Steroid Hormones / Q000378:metabolism*; D006062:Gonadotropins / Q000008:administration & dosage / Q000494:pharmacology*; D006801:Humans; D007247:Infertility, Female / Q000000981:diagnostic imaging / Q000628:therapy*; D007986:Luteinizing Hormone / Q000008:administration & dosage / Q000494:pharmacology*; D008596:Menotropins / Q000008:administration & dosage / Q000494:pharmacology; D010053:Ovary / Q000187:drug effects*; D011994:Recombinant Proteins; D013268:Stimulation, Chemical; D014463:Ultrasonography
D004338:Drug Combinations; D005300:Fertility Agents, Female; D012739:Gonadal Steroid Hormones; D006062:Gonadotropins; D011994:Recombinant Proteins; D008596:Menotropins; D007986:Luteinizing Hormone; D005640:Follicle Stimulating Hormone