In vitro recovery of human chorionic gonadotropin-stimulated cyclic adenosine 3′,5′-monophosphate production in desensitized human granulosa-luteal cells

Human granulosa-luteal cell production of cyclic adenosine 3′,5′-monophosphate (cAMP) and progesterone (P) were studied in response to purified human chorionic gonadotropin (hCG) in cultured cells from hyperstimulated follicles of in vitro fertilized patients. The hCG injection given to the patients...

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Veröffentlicht in:Fertility and sterility 1986-11, Vol.46 (5), p.920-924
Hauptverfasser: Jalkanen, Jyrki, Huhtaniemi, Ilpo, Koskimies, Aarne, Stenman, Ulf-Håkan, Tenhunen, Anssi, Ranta, Tapio
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container_end_page 924
container_issue 5
container_start_page 920
container_title Fertility and sterility
container_volume 46
creator Jalkanen, Jyrki
Huhtaniemi, Ilpo
Koskimies, Aarne
Stenman, Ulf-Håkan
Tenhunen, Anssi
Ranta, Tapio
description Human granulosa-luteal cell production of cyclic adenosine 3′,5′-monophosphate (cAMP) and progesterone (P) were studied in response to purified human chorionic gonadotropin (hCG) in cultured cells from hyperstimulated follicles of in vitro fertilized patients. The hCG injection given to the patients 36 hours before laparoscopy caused partial desensitization of adenylate cyclase of these cells to gonadotropins. Preincubation of the cells in hormone free medium for 2 to 3 days significantly increased their cAMP responsiveness to hCG. P production was stimulated initially by hCG and showed no desensitization. In the cells preincubated for 72 hours without hCG, a subsequent stimulus of 50 ng/ml of hCG elicited maximal cAMP response, whereas 1 ng/ml of hCG was sufficient to bring about maximal P secretion. Time-course studies indicated that maximal cAMP response to hCG was obtained m I to 3 hours. Both basal and hCG-stimulated P accumulation continued to rise for up to 24 hours. Preincubation of granulosa-luteal cells from hyperstimulated follicles improves the cells’ cAMP responsiveness to hCG, whereas P response remains unaltered.
doi_str_mv 10.1016/S0015-0282(16)49835-3
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subjects Biological and medical sciences
Birth control
Chorionic Gonadotropin - pharmacology
Corpus Luteum - metabolism
Cyclic AMP - biosynthesis
Female
Fertilization in Vitro
Granulosa Cells - metabolism
Gynecology. Andrology. Obstetrics
Humans
Luteal Cells - metabolism
Medical sciences
Progesterone - biosynthesis
Sterility. Assisted procreation
Stimulation, Chemical
title In vitro recovery of human chorionic gonadotropin-stimulated cyclic adenosine 3′,5′-monophosphate production in desensitized human granulosa-luteal cells
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