Results 11 to 20 of about 40,429 (263)

Glycolytic metabolites are critical modulators of oocyte maturation and viability. [PDF]

open access: yesPLoS 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

Effect of estrous cycle stage on oocyte in vitro maturation of domestic cats reared under tropical conditions

open access: yesRevista Científica, 2023
Oocyte maturation is a critical step for in vitro embryo production. In female cats, findings on the influence of the estrous cycle stage on oocyte quality and maturation are contradictory.
Enmar Monasterio–Alemán   +7 more
doaj   +1 more source

In vivo induction of oocyte maturation and ovulation in zebrafish. [PDF]

open access: yesPLoS ONE, 2011
The maturation of fish oocytes is a well-characterized system induced by progestins via non-genomic actions. In a previous study, we demonstrated that diethylstilbestrol (DES), a non-steroidal estrogen, induces fish oocyte maturation via the membrane ...
Toshinobu Tokumoto   +3 more
doaj   +1 more source

Twenty-first century oocyte cryopreservation—in vitro maturation of immature oocytes from ovarian tissue cryopreservation in cancer patients: A systematic review

open access: yesWomen's Health, 2022
Objectives: Our review aimed to consolidate the latest update on the application of in vitro maturation among immature oocyte harvest in combination with ovarian tissue cryopreservation known as ovarian tissue oocyte–in vitro maturation.
Ahmad Mohd Faizal   +6 more
doaj   +1 more source

The role of sonic hedgehog signaling pathway in in vitro oocyte maturation

open access: yesJournal of Animal Reproduction and Biotechnology, 2021
In vitro maturation (IVM) of oocytes is the procedure where the immature oocytes are cultivated in a laboratory until they are mature. Since IVM oocytes generally have low developmental competence as compared to those matured in vivo, development of an ...
Sanghoon Lee, Jongki Cho
doaj   +1 more source

Oocyte Maturation and Development [PDF]

open access: yesF1000Research, 2016
Sexual reproduction is essential for many organisms to propagate themselves. It requires the formation of haploid female and male gametes: oocytes and sperms. These specialized cells are generated through meiosis, a particular type of cell division that produces cells with recombined genomes that differ from their parental origin.
Verlhac, Marie-Hélène   +1 more
openaire   +2 more sources

Involvement of the serine protease inhibitor, SERPINE2, and the urokinase plasminogen activator in cumulus expansion and oocyte maturation. [PDF]

open access: yesPLoS ONE, 2013
The serpin peptidase inhibitor, clade E, member 2 (SERPINE2) inhibits urokinase-type plasminogen activator (PLAU) and tissue-type plasminogen activator.
Chung-Hao Lu   +7 more
doaj   +1 more source

Dual effects of hydrogen sulfide donor on meiosis and cumulus expansion of porcine cumulus-oocyte complexes. [PDF]

open access: yesPLoS 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]

open access: yesHuman 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

NLRP14 deficiency causes female infertility with oocyte maturation defects and early embryonic arrest by impairing cytoplasmic UHRF1 abundance

open access: yesCell 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

Home - About - Disclaimer - Privacy