Results 31 to 40 of about 509,837 (300)
Dual effects of hydrogen sulfide donor on meiosis and cumulus expansion of porcine cumulus-oocyte complexes. [PDF]
PLoS ONE, 2014 Hydrogen sulfide (H2S) has been revealed to be a signal molecule with second messenger action in the somatic cells of many tissues, including the reproductive tract. The aim of this study was to address how exogenous H2S acts on the meiotic maturation of
Jan Nevoral +13 more
doaj +1 more source
Failure of oocyte maturation: Possible mechanisms for oocyte maturation arrest [PDF]
Human Reproduction, 2003 For human IVF, the patient's ovaries are hormonally stimulated to ensure the collection of fully matured oocytes that are at the metaphase II stage. Only these oocytes can be successfully fertilized either when mixed with sperm or after ICSI. Nevertheless, in some cases immature or maturing oocytes are recovered from follicles.
Milan, Mrazek, Josef, Fulka
openaire +2 more sources
Antioxidant Nobiletin Enhances Oocyte Maturation and Subsequent Embryo Development and Quality
International Journal of Molecular Sciences, 2020 Nobiletin is a polymethoxylated flavonoid isolated from citrus fruits with wide biological effects, including inhibition of reactive oxygen species (ROS) production and cell cycle regulation, important factors for oocyte in vitro maturation (IVM ...
Y. Cajas +7 more
semanticscholar +1 more source
Journal of Ovarian Research, 2023 Background The oocyte and its surrounding cumulus cells (CCs) exist as an inseparable entity. The maturation of the oocyte relies on communication between the oocyte and the surrounding CCs.
Yena Hu +10 more
doaj +1 more source
Cell Reports, 2023 Summary: Oocyte maturation is vital to attain full competence required for fertilization and embryogenesis. NLRP14 is preferentially expressed in mammalian oocytes and early embryos.
Wenzhe Zhang +15 more
doaj +1 more source
Effects of endocrine-disrupting chemical exposure on zebrafish ovarian follicles [PDF]
, 2017 The process of oocyte maturation involves both nuclear and cytoplasmic events that are essential for the production of viable eggs and subsequent fertilization in sexually reproducing animals.
D\u27Angelo, Josephine +1 more
core +2 more sources
Reproductive Sciences, 2020 The ovarian follicle luteinizing hormone (LH) signaling molecules that regulate oocyte meiotic maturation have recently been identified. The LH signal reduces preovulatory follicle cyclic nucleotide levels which releases oocytes from the first meiotic ...
Armando Arroyo, B. Kim, J. Yeh
semanticscholar +1 more source
Aquaculture Reports, 2022 G Protein-coupled receptor 3 (Gpr3) plays a critical role in maintaining oocyte meiotic arrest in mammals. To ascertain the function of Gpr3 in oocyte maturation in fish, the Gpr3 cDNA was cloned from orange-spotted grouper (Epinephelus coioides).
Fengying Yan +11 more
doaj +1 more source
Responsiveness of bovine cumulus-oocyte-complexes (COC) to porcine and recombinant human FSH, and the effect of COC quality on gonadotropin receptor and Cx43 marker gene mRNAs during maturation in vitro [PDF]
, 2003 Substantially less development to the blastocyst stage occurs in vitro than in vivo and this may be due to deficiencies in oocyte competence. Although a large proportion of bovine oocytes undergo spontaneous nuclear maturation, less is known about ...
Calder, Michele D +3 more
core +4 more sources
Cryopreservation of equine oocytes: looking into the crystal ball [PDF]
, 2020 In vitro embryo production has evolved rapidly in the horse over the past decade, but blastocyst rates from vitrified equine oocytes remain quite poor and further research is needed to warrant application.
Angel Velez, Daniel +4 more
core +2 more sources