Results 11 to 20 of about 241,792 (308)
Human Reproduction, 1998 Cryopreservation of human oocytes has been employed with little success in clinical practice, even though it may solve the legal and ethical problems linked to embryo freezing. Various attempts to cryopreserve human oocytes have mostly been unsuccessful, leading to low oocyte survival rates after thawing, and the search for an optimal protocol for ...
R, Fabbri +8 more
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Mechanisms of Oocyte Maturation and Related Epigenetic Regulation
Frontiers in Cell and Developmental Biology, 2021 Meiosis is the basis of sexual reproduction. In female mammals, meiosis of oocytes starts before birth and sustains at the dictyate stage of meiotic prophase I before gonadotropins-induced ovulation happens. Once meiosis gets started, the oocytes undergo
Meina He, Tuo Zhang, Yi Yang, Chao Wang
semanticscholar +1 more source
Frontiers in Cell and Developmental Biology, 2021 ObjectiveHyperlipidemia are common polycystic ovarian syndrome (PCOS)-related metabolic dysfunctions and can adversely affect assisted reproductive technology (ART) outcomes in controlled ovarian hyperstimulation (COH) cycles. The objective of this study
Tao Liu +74 more
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JBRA Assisted Reproduction, 2021 It is well known that female reproduction ability decreases during the forth decade of life due to age-related changes in oocyte quality and quantity; although the number of women trying to conceive has today increased remarkably between the ages of 36 ...
Ali Reza Eftekhari Moghadam +3 more
semanticscholar +1 more source
A PP2A-B56—Centered View on Metaphase-to-Anaphase Transition in Mouse Oocyte Meiosis I
Cells, 2020 Meiosis is required to reduce to haploid the diploid genome content of a cell, generating gametes—oocytes and sperm—with the correct number of chromosomes.
Leonor Keating +2 more
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Medical Sciences, 2020 Here we investigate whether the presence of germinal vesicle-stage oocytes (GV− oocytes) reflects poor oocyte developmental competence (or quality).
Pia Astbury +5 more
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Frontiers in Medicine, 2021 Objective: The objective of this study was to provide a descriptive analysis of the clinical outcomes achieved in oocyte vitrification in cases where sperm was unavailable on oocyte retrieval day, and to identify predictors of oocyte survival.Methods ...
Xiao Fu +22 more
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Is there an optimal timing interval between hCG trigger and oocyte vitrification?
Taiwanese Journal of Obstetrics & Gynecology, 2022 Objective: Oocyte vitrification has been developed as a promising alternative to slow freezing; however, the clinical outcome is highly operator dependent.
Yu-Wen Weng +5 more
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Human Reproduction, 1998 Primary oocytes recovered from small and growing follicles of > or = 3 mm in the ovaries of untreated women, can be matured in vitro, will fertilize and develop in vitro, and when transferred to the patient, develop to term. However, the implantation rate of cleaved embryos has been disappointingly low and when embryos are allowed to develop beyond the
A, Trounson +5 more
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Oocyte specific lncRNA variant Rose influences oocyte and embryo development
Non-coding RNA Research, 2021 Fully grown mammalian oocytes store a large amount of RNA synthesized during the transcriptionally active growth stage. A large part of the stored RNA belongs to the long non-coding class which contain either transcriptional noise or important ...
Rajan Iyyappan +5 more
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