Hyperthermia during estrus has direct consequences on the maturing oocyte that carries
over to the resultant embryo to compromise its ability to continue in development. Because …

Mitochondria in oocytes play important roles in many processes, including early embryo
development. Promotion of mitochondrial degradation and biogenesis through Sirtuin 1 …

The objective of this research was to clarify the aging-related changes in in vitro-matured
bovine oocytes. Firstly, we examined the fertilization and embryonic development of bovine …

Extreme temperature during summer may lead to heat stress in cattle and compromise their
productivity. It also poses detrimental impacts on the developmental capacity of bovine …

This study was undertaken to investigate the effects on the nuclear maturation and
subsequent embryonic development of bovine oocytes exposed to heat stress (HS) when …

Stress can affect reproductive performance of lactating cows by targeting the ovarian pool of
follicles and their enclosed oocytes. Among the documented stressors are heat stress (ie …

Heat stress is associated with increased production of reactive oxygen species (ROS) and
disruption of bovine oocyte function. Here, we examined whether the antioxidant melatonin …

Environmental stress-induced alterations in oocyte mitochondria are suggested to
deleteriously affect developmental competence of the ovarian pool of oocytes. We examined …

Exposure of oocytes to elevated temperature (ie heat shock) during maturation can reduce
fertilization rate and development of the resultant embryos. Given the possible role of free …

Mammalian oocytes are long-lived cells in the human body. They initiate meiosis already in
the embryonic ovary, arrest meiotically for long periods in dictyate stage, and resume …