Results 11 to 20 of about 264,880 (269)
Oocyte cryopreservation review: outcomes of medical oocyte cryopreservation and planned oocyte cryopreservation [PDF]
Reproductive Biology and Endocrinology, 2022 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.
Zachary Walker +2 more
doaj +3 more sources
Oocyte activation deficiency: a role for an oocyte contribution? [PDF]
Human Reproduction Update, 2015 Infertility affects between 10 and 16% of couples worldwide. Twenty to 30% of cases of infertility are due to a male factor, 20-35% to a female factor, and 25-40% are due to both male and female factors. In ∼10-25% of cases, the precise underlying cause remains unclear.
Yeste, M +4 more
openaire +5 more sources
The Role of Oocyte Organelles in Determining Developmental Competence
Biology, 2017 The ability of an oocyte to undergo successful cytoplasmic and nuclear maturation, fertilization and embryo development is referred to as the oocyte’s quality or developmental competence.
Karen L. Reader +2 more
doaj +2 more sources
Comparatively profiling the transcriptome of human, Porcine and mouse oocytes undergoing meiotic maturation [PDF]
BMC GenomicsBackground Oocyte maturation is a critical process responsible for supporting preimplantation embryo development and full development to term. Understanding oocyte gene expression is relevant given the unique molecular mechanism present in this gamete ...
Naru Zhou +13 more
doaj +2 more sources
The Role of Mitochondria in Oocyte Maturation
Cells, 2021 With the nucleus as an exception, mitochondria are the only animal cell organelles containing their own genetic information, called mitochondrial DNA (mtDNA).
A. Kirillova +3 more
semanticscholar +1 more source
A new flow-based design for double-lumen needles [PDF]
Journal of Biomechanics 160, 111832, 2023, 2023 Oocyte retrieval forms a crucial part of in vitro fertilisation treatment and its ultimate outcome. Standard double-lumen needles, which include a sequence of aspiration and flushing steps, are characterised by a similar success rate to single-lumen needles, despite their increased cost.
arxiv +1 more source
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
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
On cyclins, oocytes, and eggs [PDF]
Molecular Reproduction and Development, 1997 Oocyte and egg are suitable model systems for studying cell division since meiotic maturation resembles a G2/M transition and early embryonic divisions are precisely timed and occur without zygotic transcription. The analysis of oocytes and eggs from different species provides the opportunity to understand the roles of proteins that the critical to the
Taieb, Frederic +2 more
openaire +5 more sources
Implications of oocyte cryostorage for the practice of oocyte donation [PDF]
Human Reproduction, 2012 As the efficiency of oocyte cryopreservation has increased rapidly in recent years, oocytes are currently being stored either in the course of IVF treatments or as a fertility preservation measure. These practices may have an impact on the number of available donor oocytes due to two different dynamics: first, a certain percentage of women for whom ...
Guido de Wert +3 more
openaire +3 more sources