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- W3010742350 abstract "Abstract Vitrification induces mitochondrial dysfunction in warmed oocytes, and degeneration and biogenesis of mitochondria are crucial for maintaining oocyte quality. The present study addresses a hypothesis that treatment of vitrified-warmed oocytes with resveratrol could improve the viability of oocytes by activating mitochondrial biosynthesis. Cumulus oocyte complexes (COCs) collected from gilt ovaries were vitrified, warmed, and cultured in a medium containing vehicle or 1 μM resveratrol. Resveratrol treatment improved survival, maturation, and mitochondrial membrane potential of vitrified-warmed oocytes, but did not improve the development into blastocysts after parthenogenetic activation. Resveratrol treatment increased mitochondrial synthesis, as determined by the expression levels of TOMM20 and mitochondrial DNA copy number, in vitrified-warmed oocytes, but not in non-vitrified oocytes. In addition, the effect of resveratrol treatment on mitochondrial synthesis was reduced by EX527, a SIRT1 inhibitor. Resveratrol treatment of vitrified-warmed oocytes increased the expression levels of genes involved in mitochondrial synthesis (TFAM, POLG, and PGC1α) and increased nuclear translocation of NRF2. Furthermore, vitrification induced mitophagy, as confirmed by a reduction in TOMM20 expression and decreased p62 aggregation, whereas resveratrol treatment did not affect these mitophagic features. In conclusion, vitrification induced mitochondrial clearance in oocytes, whereas activation of SIRT1 by resveratrol treatment facilitated the recovery of vitrified-warmed oocytes through the activation of mitochondrial synthesis." @default.
- W3010742350 created "2020-03-23" @default.
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- W3010742350 date "2020-04-01" @default.
- W3010742350 modified "2023-10-16" @default.
- W3010742350 title "Resveratrol treatment increases mitochondrial biogenesis and improves viability of porcine germinal-vesicle stage vitrified-warmed oocytes" @default.
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- W3010742350 doi "https://doi.org/10.1016/j.cryobiol.2020.02.014" @default.
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