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pubmed-article:6434590pubmed:abstractTextThe production of 17 beta-estradiol and progesterone (Prog) by human granulosa-luteal cells obtained from 24 aspirated follicles of 11 women undergoing laparoscopy in an in vitro fertilization program was studied. Follicular growth was stimulated with an individualized human menopausal gonadotropin regimen begun on either day 1 (group I; n = 5) or day 3 (group II; n = 6) of the menstrual cycle, and laparoscopy was performed 36 h after hCG administration. Granulosa-luteal cells were cultured for 2 h in culture medium alone or in the presence of either pregnenolone (10(-7) M) or testosterone (10(-7) M). Aromatase activity was present in the granulosa-luteal cells, as evidenced by a significant (P less than 0.001) increase in E2 production in the presence of testosterone. The addition of pregnenolone did not augment Prog production. Granulosa-luteal cells derived from Group II patients produced significantly (P less than 0.001) more Prog than those derived from group I patients. In addition, group II granulosa-luteal cells associated with mature oocyte-coronacumulus complexes produced significantly (P less than 0.001) more Prog than those in group I. Fertilization and pregnancy correlated with Prog production, in that granulosa-luteal cells associated with oocytes that were fertilized produced significantly (P less than 0.001) less Prog than those associated with nonfertilized oocytes. Granulosa-luteal cells from the 2 patients in this series who conceived demonstrated a further significant (P less than 0.02) reduction in Prog production. It appears that administration of human menopausal gonadotropin early (day 1) in the follicular phase results in incomplete maturation of the granulosa cells. Furthermore, the optimal oocyte, in terms of successful fertilization, may be one derived from a follicle that has undergone appropriate stimulation resulting in adequate maturation, but has not surpassed that point.lld:pubmed
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pubmed-article:6434590pubmed:articleTitle17 beta-estradiol and progesterone production by human granulosa-luteal cells isolated from human menopausal gonadotropin-stimulated cycles for in vitro fertilization.lld:pubmed
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