Results 31 to 40 of about 53,055 (306)

Regulation of fatty acid oxidation in mouse cumulus-oocyte complexes during maturation and modulation by PPAR agonists.

open access: yesPLoS 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

Improvement of oocyte competence and in vitro oocyte maturation with EGF and IGF-I in Guinea pig model

open access: yes, 2023
2023 Acuerdos transformativos CRUEIn vitro maturation (IVM) system is an alternative method to superovulation protocols to obtain mature oocytes. Epidermal Growth Factor (EGF) and Insulin-like Growth Factor I (IGF-I) have been widely used in IVM medium ...
Cañón Beltrán, Karina Esperanza   +5 more
core   +1 more source

Reproductive Outcomes of In Vitro Fertilization and Fresh Embryo Transfer in Infertile Women With Adenomyosis: A Retrospective Cohort Study

open access: yesFrontiers in Endocrinology, 2022
BackgroundAdenomyosis is commonly encountered in infertile women; however, it is still unclear whether adenomyosis has a detrimental effect on in vitro fertilization and embryo transfer (IVF-ET) outcomes.MethodWe enrolled 1146 patients with adenomyosis ...
Tingting Liang   +26 more
doaj   +1 more source

The regulation of oocyte maturation and ovulation in the closest sister group of vertebrates

open access: yeseLife, 2019
Ascidians are the closest living relatives of vertebrates, and their study is important for understanding the evolutionary processes of oocyte maturation and ovulation.
Shin Matsubara   +4 more
doaj   +1 more source

Effects of Pre-ovulatory Follicular Fluid of Repeat Breeder Dairy Cows on Bovine Fertility Transcriptomic Markers and Oocytes Maturation and Fertilization Capacity

open access: yesFrontiers in Veterinary Science, 2021
The current study aimed to determine the effects of the preovulatory follicular fluid (FF) of normal heifer (NH) and repeat breeder cows with subclinical endometritis (SCE) or without (nSCE) on oocyte maturation (Experiment 1) and fertilization rates ...
Mojtaba Kafi   +5 more
doaj   +1 more source

Post-Translational Modifications in Oocyte Maturation and Embryo Development

open access: yesFrontiers in Cell and Developmental Biology, 2021
Mammalian oocyte maturation and embryo development are unique biological processes regulated by various modifications. Since de novo mRNA transcription is absent during oocyte meiosis, protein-level regulation, especially post-translational modification (
Yu Wu, Yu Wu, Mo Li, Mo Li, Mo Yang
doaj   +1 more source

The effect of vitrification after warming on the expressions of p38, CDK1, and cyclin B in immature goat oocytes followed by in vitro maturation [PDF]

open access: yesVeterinary World, 2020
Background and Aim: The combination of vitrification techniques and in vitro maturation can reduce oocyte competence. Mitogen-activated protein kinase and maturation-promoting factor are significant in oocyte meiotic maturation regulation.
A. A. Muhammad Nur Kasman   +2 more
doaj   +1 more source

Oocyte maturation and embryonic failure [PDF]

open access: yesHuman Reproduction Update, 1998
Embryonic development is readily compromised by imperfections introduced during the process of oocyte maturation. We discuss the nature and causes of these imperfections, particularly in oocytes exposed to inappropriate hormonal regimes in vivo or to culture systems designed to induce the maturation of oocytes in vitro. The acquisition of developmental
R M, Moor, Y, Dai, C, Lee, J, Fulka
openaire   +2 more sources

The Making of a Competent Oocyte – A Review of Oocyte Development and Its Regulation

open access: yesJournal of Animal Reproduction and Biotechnology, 2020
Assisted reproductive technologies (ART) merely depend on improving the oocyte maturation and their developmental competence to produce good quality embryos.
Hammed A. Tukur   +4 more
doaj   +1 more source

Oocyte Maturation in Starfish

open access: yesCells, 2020
Oocyte maturation is a process that occurs in the ovaries, where an immature oocyte resumes meiosis to attain competence for normal fertilization after ovulation/spawning. In starfish, the hormone 1-methyladenine binds to an unidentified receptor on the plasma membrane of oocytes, inducing a conformational change in the heterotrimeric GTP-binding ...
openaire   +3 more sources

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