Melatonin improves the viability and ultrastructure of bovine oocyte‐granulosa complexes of in vitro cultured early antral follicles
Bianca R. Silva,
Danisvânia R. Nascimento,
Francisco C. Costa
et al.
Abstract:This study aims to investigate the effects of melatonin on follicular growth, viability and ultrastructure, as well as on the levels of mRNA for antioxidant enzymes, reactive oxygen species (ROS) and meiotic progression in oocytes from in vitro cultured bovine early antral follicles. To this end, isolated early antral follicles (500–600 μm) were cultured in TCM‐199+ alone or supplemented with 10−6, 10−7 or 10−8 M melatonin at 38.5°C with 5% CO2 for 8 days. Follicle diameters were evaluated at days 0, 4 and 8 o… Show more
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