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• W2034773129 abstract "The ability of isolated porcine oocyte-cumulus complexes to secrete progesterone and convert androgens to estrogen during two days of culture was examined. We studied the effects of steroids, as well as a partially purified fraction of follicular fluid oocyte maturation inhibitor (Sephadex Peak A OMI), on the ability of oocyte-cumulus complexes to mature and convert androgen to estrogen.The addition of 0.014, 0.14 or 1.4 μg/ml androstenedione to the culture medium resulted in a substrate dose-dependent accumulation of estrogen in the culture medium after two days. Oocyte-cumulus cell complexes secreted more estrogen in the presence of androstenedione than in the presence of testosterone (P < 0.05). The addition of 1.4 μg/ml testosterone, androstenedione, or estradiol, but not dihydrotestosterone, inhibited cumulus cell progesterone secretion (P < 0.001 versus untreated control culture). Oocyte maturation was not altered by the addition of steroids in doses up to and including 1.4 μg/ml. The Sephadex Peak A OMI fraction of pFFL inhibited oocyte maturation 51% (P < 0.01) and progesterone secretion 91% (P < 0.01) but had no effect on the conversion of androgens to estrogens. Cumulus cell monolayer formation was inhibited 71.5% (P < 0.01) by the Sephadex Peak A OMI fraction and 35.4% (P < 0.05) by the Sephadex Peak A OMI fraction plus androstenedione.These studies indicate that porcine oocyte-cumulus complexes can convert androgens to estrogens and that partially purified OMI does not inhibit conversion of androgens to estrogen." @default.
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• W2034773129 date "1982-01-01" @default.
• W2034773129 modified "2023-09-22" @default.
• W2034773129 title "Steroidogenesis by isolated porcine oocyte-cumulus complexes: Lack of an inhibitory effect of low molecular weight fraction of porcine follicular fluid on conversion of androgen to estrogen" @default.
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• W2034773129 doi "https://doi.org/10.1002/mrd.1120050211" @default.
• W2034773129 hasPublicationYear "1982" @default.
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