Reproductive medicine and biology · 2020
Effects of estradiol on in vitro maturation of buffalo and goat oocytes.
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Maksura Hurum, Akon Narsisa, Islam Md Nuronnabi, Akter Ireen, Modak Avijit Kumar, Khatun Asma, Alam Md Hasanur, Hashem Md Abul, Amin Md Ruhul, Moniruzzaman Mohammad
Аннотация
PURPOSE: The effects of estradiol on oocyte development seem to be varied among species. The present study investigated the effects of 17β-estradiol on in vitro maturation of buffalo and goat oocytes.
METHODS: Cumulus oocyte complexes (COCs) were aspirated from large antral follicles of slaughtered buffalo and goat ovaries. COCs were cultured in TCM-199 medium supplemented with 0, 0.5, 1, and 1.5 µg/mL of 17β-estradiol for in vitro maturation. Then, oocytes were used for the examination of state of nuclear maturation and cumulus expansion.
RESULTS: In both species, oocytes treated with 17β-estradiol showed higher cumulus expansion rate than control (0 µg/mL treated). In buffalo, the percentage of oocytes matured to the metaphase II (MII) stage increased in the concentration-dependent manner of 17β-estradiol. Similarly, estradiol positively influenced nuclear maturation of goat oocytes in vitro.
CONCLUSIONS: Estradiol has promoting effects on normalprogress of in vitro oocyte meiosis in buffalos and goats.
METHODS: Cumulus oocyte complexes (COCs) were aspirated from large antral follicles of slaughtered buffalo and goat ovaries. COCs were cultured in TCM-199 medium supplemented with 0, 0.5, 1, and 1.5 µg/mL of 17β-estradiol for in vitro maturation. Then, oocytes were used for the examination of state of nuclear maturation and cumulus expansion.
RESULTS: In both species, oocytes treated with 17β-estradiol showed higher cumulus expansion rate than control (0 µg/mL treated). In buffalo, the percentage of oocytes matured to the metaphase II (MII) stage increased in the concentration-dependent manner of 17β-estradiol. Similarly, estradiol positively influenced nuclear maturation of goat oocytes in vitro.
CONCLUSIONS: Estradiol has promoting effects on normalprogress of in vitro oocyte meiosis in buffalos and goats.