In-vitro steroid production by human granulosa lutein cells in long-term cultures.
delta 4 and delta 5 pathway steroidogenesis by human granulosa lutein cells (GLC) in long-term cultures (6-8 days) was investigated under basal (10% serum + medium + GLC) and stimulated (human chorionic gonadotropins (hCG), 100 mIU/ml) conditions. In the delta 4 pathway, 17-hydroxyprogesterone (17-OHP) secretion increased from 160-fold at 48 hours of culture to 360-fold at 144 hours under basal conditions, when compared with the respective controls (concentrations in the 10% serum added to the medium) (p less than 0.005). HCG further augmented 17-OHP production significantly at 96, 144 and 192 hours of culture. Progesterone (P) secretion behaved similarly, and increased from 150-fold at 48 hours to 560-fold at 96 hours when compared with controls, being further stimulated by hCG. In contrast, androstenedione (A) secretion throughout the entire culture period increased only slightly (3-5-fold) under both basal and stimulated conditions, when compared with the respective controls. In the delta 5 pathway, the secretory pattern of 17-hydroxypregnenolone (17-OHPregn) and dehydroepiandrosterone (DHEA) was similar to that observed with A, and both steroids increased only slightly under basal and stimulated conditions, when compared with their respective controls. In conclusion, 17-OHP and P are secreted in very significant amounts during the entire culture period while 17-OHPregn, DHEA and A are secreted in extremely small amounts. These results demonstrate that the delta 5 pathway is inactive in long-term human GLC cultures while the delta 4 pathway is active in certain portions only.(ABSTRACT TRUNCATED AT 250 WORDS)
Hurwitz
A
A
Department of Obstetrics and Gynecology, Hadassah-Hebrew University Medical Center, Jerusalem, Israel.
Laufer
N
N
Palti
Z
Z
Schenker
J B
JB
Vecsei
P
P
Rösler
A
A
D006907:17-alpha-Hydroxypregnenolone / Q000378:metabolism; D019326:17-alpha-Hydroxyprogesterone; D000735:Androstenedione / Q000096:biosynthesis; D002478:Cells, Cultured; D003338:Corpus Luteum / Q000378:metabolism*; D003687:Dehydroepiandrosterone / Q000096:biosynthesis; D005260:Female; D006107:Granulosa Cells / Q000378:metabolism*; D006801:Humans; D006908:Hydroxyprogesterones / Q000378:metabolism; D008184:Luteal Cells / Q000378:metabolism*; D011374:Progesterone / Q000096:biosynthesis; D013256:Steroids / Q000096:biosynthesis*; D013997:Time Factors
D006908:Hydroxyprogesterones; D013256:Steroids; D006907:17-alpha-Hydroxypregnenolone; D000735:Androstenedione; D003687:Dehydroepiandrosterone; D011374:Progesterone; D019326:17-alpha-Hydroxyprogesterone