Fine morphological assessment of quality of human mature oocytes after slow freezing or vitrification with a closed device: a comparative analysis [PDF]
, 2014 BACKGROUND: Human mature oocytes are very susceptible to cryodamage. Several reports demonstrated that vitrification might preserve oocyte better than slow freezing. However, this is still controversial.
A. Borini +7 more
core +2 more sources
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
PLoS ONE, 2014 Fatty acid oxidation is an important energy source for the oocyte; however, little is known about how this metabolic pathway is regulated in cumulus-oocyte complexes.
Kylie R Dunning +4 more
doaj +1 more source
Reorganization, specialization, and degradation of oocyte maternal components for early development
Reproductive Medicine and Biology, 2023 Background Oocyte components are maternally provided, solely determine oocyte quality, and coordinately determine embryo quality with zygotic gene expression.
Yuhkoh Satouh, Ken Sato
doaj +1 more source
Freeze/thaw stress induces organelle remodeling and membrane recycling in cryopreserved human mature oocytes [PDF]
, 2016 Purpose: Our aim was to evaluate the ultrastructure of human metaphase II oocytes subjected to slow freezing and fixed after thawing at different intervals during post-thaw rehydration.
Albani, E. +8 more
core +1 more source
Integrated Environmental Assessment and Management, EarlyView., 2023 Abstract In the Lake Koocanusa‐Kootenai River system (Montana, USA and British Columbia, Canada), selenium (Se) contamination has become an international concern and is suspected to contribute to the observed burbot (Lota lota) population collapse. Due to our limited ability to sample burbot in Lake Koocanusa for monitoring studies, we used a reference
Stephanie D. Graves +6 more
wiley +1 more source
GGPP-Mediated Protein Geranylgeranylation in Oocyte Is Essential for the Establishment of Oocyte-Granulosa Cell Communication and Primary-Secondary Follicle Transition in Mouse Ovary. [PDF]
PLoS Genetics, 2017 Folliculogenesis is a progressive and highly regulated process, which is essential to provide ova for later reproductive life, requires the bidirectional communication between the oocyte and granulosa cells.
Chen Jiang +12 more
doaj +1 more source
Oocyte maturation in the toad Rhinella arenarum (Amphibia, Anura): Evidence of cAMP involvement in steroid production and action [PDF]
, 2018 In this work, we describe the participation of the adenylate cyclase/3′-5′-cyclic adenonsine monophosphate (cAMP) pathway in the seasonal follicular secretion of progesterone (P 4 ) and testosterone (T), and its relationship with the maturation of ...
Arias Torres +48 more
core +1 more source
Global Gene Expression Profiling of Individual Human Oocytes and Embryos Demonstrates Heterogeneity in Early Development [PDF]
, 2013 Early development in humans is characterised by low and variable embryonic viability, reflected in low fecundity and high rates of miscarriage, relative to other mammals.
Brison, Daniel R. +4 more
core +7 more sources
Glycolytic metabolites are critical modulators of oocyte maturation and viability. [PDF]
PLoS ONE, 2013 The maturation of an oocyte into an egg is a key step in preparation for fertilization. In Xenopus, oocyte maturation is independent of transcription, being regulated at the level of translation and post-translational modifications of proteins.
Lloyd Berger, Andrew Wilde
doaj +1 more source