title: Effect of a luteinizing hormone-releasing hormone agonist (Buserelin) on steroidogenesis of cultured human preovulatory granulosa cells.
abstract: In order to ascertain whether there is a direct effect of luteinizing hormone-releasing hormone (LH-RH) agonists on ovarian steroidogenesis, human preovulatory granulosa cells were cultured in the presence of an LH-RH agonist (Buserelin, Hoechst Roussel Pharmaceuticals, Paris, France). Cultures were performed without serum but with precursors of estrogens and progestins. In basal conditions, Buserelin, at 1 ng/ml, increased estradiol and progesterone (P) secretion, while at concentrations of 10 and 100 ng/ml, no effect was observed. In the presence of follicle-stimulating hormone (FSH) or LH, Buserelin at 1 and 10 ng/ml did not modify the cell's steroidogenesis. However, at a concentration of 100 ng/ml, Buserelin decreased LH stimulation of P secretion. These results suggest that LH-RH agonists, at concentrations in the range of those obtained in clinical use, can modulate ovarian steroidogenesis by direct action.
mesh_terms: D019326:17-alpha-Hydroxyprogesterone; D000735:Androstenedione / Q000096:biosynthesis; D002064:Buserelin / Q000494:pharmacology*; D002478:Cells, Cultured; D008078:Cholesterol, LDL / Q000378:metabolism; D004958:Estradiol / Q000096:biosynthesis; D005260:Female; D005640:Follicle Stimulating Hormone / Q000494:pharmacology; D006107:Granulosa Cells / Q000187:drug effects*; D006801:Humans; D006908:Hydroxyprogesterones / Q000096:biosynthesis; D011374:Progesterone / Q000096:biosynthesis; D013739:Testosterone / Q000096:biosynthesis
chemical_list: D008078:Cholesterol, LDL; D006908:Hydroxyprogesterones; D013739:Testosterone; D000735:Androstenedione; D011374:Progesterone; D004958:Estradiol; D019326:17-alpha-Hydroxyprogesterone; D005640:Follicle Stimulating Hormone; D002064:Buserelin