Results 11 to 20 of about 389,892 (358)
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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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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Toxins, 2019 The impact of zearalenone (ZEN) on female reproduction remains an issue, since its effects may differ among exposed cell types. Besides the use of decontaminants in animal diet, other approaches should be considered to minimise ZEN effects after exposure.
Talyne Emilia Santos Silva +9 more
doaj +1 more source
Genome-wide methylation profile of mitochondrial DNA across bovine preimplantation development
Epigenetics, 2023 This study characterized variations in the methylation profile of mitochondrial DNA (mtDNA) during initial bovine embryo development and correlated the presence of methylation with mtDNA transcription.
Camila Bruna de Lima +3 more
doaj +1 more source
Veterinary and Animal Science, 2019 The aim of this study was to evaluate the immunolocalization for glucocorticoid receptor (NR3C1) in goat ovarian follicles and the effect of cortisol on in vitro development of preantral follicles.
Julian T. Pontes +7 more
doaj +1 more source
Metaphase II oocytes from human unilaminar follicles grown in a multi-step culture system
Molecular human reproduction, 2018 STUDY QUESTION Can complete oocyte development be achieved from human ovarian tissue containing primordial/unilaminar follicles and grown in vitro in a multi-step culture to meiotic maturation demonstrated by the formation of polar bodies and a Metaphase
M. Mclaughlin +4 more
semanticscholar +1 more source
Vitrification of human immature oocytes before and after in vitro maturation: a review [PDF]
, 2017 The use of immature oocytes subjected to in vitro maturation (IVM) opens interesting perspectives for fertility preservation where ovarian reserves are damaged by pathologies or therapies, as in PCO/PCOS and cancer patients. Human oocyte cryopreservation
Ashourzadeh, S +5 more
core +1 more source
Oocyte cryopreservation review: outcomes of medical oocyte cryopreservation and planned oocyte cryopreservation [PDF]
Reproductive Biology and Endocrinology, 2022 Abstract Background The utilization of oocyte cryopreservation (OC) has become popularized with increasing numbers of reproductive-aged patients desiring to maintain fertility for future family building. OC was initially used for fertility preservation in postmenarchal patients prior to gonadotoxic therapies; however, it
Zachary Walker +2 more
openaire +3 more sources
Interaction between growing oocytes and granulosa cells in vitro
Reproductive Medicine and Biology, 2019 Oocyte growth is accompanied by follicular development in mammalian ovaries. Since the discovery of two oocyte‐derived factors, growth differentiation factor 9 (GDF9), and bone morphogenetic protein 15 (BMP15), knowledge of the bidirectional ...
M. Alam, T. Miyano
semanticscholar +1 more source
LSD1 is essential for oocyte meiotic progression by regulating CDC25B expression in mice [PDF]
, 2015 Mammalian oocytes are arrested at prophase I until puberty when hormonal signals induce the resumption of meiosis I and progression to meiosis II.
Chen, T +8 more
core +1 more source