Results 41 to 50 of about 509,837 (300)

Oocyte In Vitro Maturation with Crude Sperm Extract Protein of Bull's Spermatozoa

Journal of Experimental Life Science, 2016
Oocyte In vitro maturation (IVM) is one of the important parts for in vitro fertilization (IVF). The success of oocyte maturation is influenced by the composit ion and the quality of IVM medium.
Bilqis Bilqis, Sri Rahayu, Gatot Ciptadi
doaj   +1 more source

cAMP Pulsing of Denuded Mouse Oocytes Increases Meiotic Resumption Via Activation of AMP-activated Protein Kinase [PDF]

, 2009
cAMP plays a critical role in the control of oocyte maturation, as a high level of cAMP maintains oocyte arrest at the first meiotic prophase. Yet this study shows that pulsing meiotically arrested denuded oocytes (DO) with cAMP induces oocyte maturation
Chen, Jing, Chi, Maggie M., Downs, Stephen, Moley, Kelle H.   +3 more
core   +2 more sources

Porcine oocyte maturation in vitro : role of cAMP and oocyte-secreted factors: a practical approach [PDF]

, 2016
Polyspermy or the penetration of more than one sperm cell remains a problem during porcine in vitro fertilization (IVF). After in vitro culture of porcine zygotes, only a low percentage of blastocysts develop and their quality is inferior to that of in ...
Appeltant, Ruth, Kikuchi, Kazuhiro, Maes, Dominiek, Somfai, Tamás, Van Soom, Ann   +4 more
core   +2 more sources

Induction and inhibition of oocyte maturation by EDCs in zebrafish

Reproductive Biology and Endocrinology, 2005
Background Oocyte maturation in lower vertebrates is triggered by maturation-inducing hormone (MIH), which acts on unidentified receptors on the oocyte surface and induces the activation of maturation-promoting factor (MPF) in the oocyte cytoplasm.
Tokumoto Mika, Tokumoto Toshinobu, Nagahama Yoshitaka   +2 more
doaj   +1 more source

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

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, Marie R Anastasi, Voueleng J Zhang, Darryl L Russell, Rebecca L Robker   +4 more
doaj   +1 more source

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, Khalili, Ma, Macchiarelli, G, Nottola, Sa, Palmerini, Mg, Shahedi, A   +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

Frontiers 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, Tingting Liang, Wen Zhang, Wen Zhang, Wen Zhang, Wen Zhang, Wen Zhang, Ningning Pan, Ningning Pan, Ningning Pan, Ningning Pan, Ningning Pan, Bing Han, Bing Han, Bing Han, Bing Han, Bing Han, Rong Li, Rong Li, Rong Li, Rong Li, Rong Li, Caihong Ma, Caihong Ma, Caihong Ma, Caihong Ma, Caihong Ma   +26 more
doaj   +1 more source

Activation of ADF/cofilin by phosphorylation-regulated Slingshot phosphatase is required for the meiotic spindle assembly in Xenopus laevis oocytes [PDF]

, 2013
We identify Xenopus ADF/cofilin (XAC) and its activator, Slingshot phosphatase (XSSH), as key regulators of actin dynamics essential for spindle microtubule assembly during Xenopus oocyte maturation.
Abe, Hiroshi, De Bock, Pieter-Jan, Fujiki, Saburo, Gevaert, Kris, Iwase, Shohei, Kuchitsu, Miyako, Ono, Shoichiro, Sato, Ryuhei, Tawada, Toshinobu, Yamagishi, Yuka   +9 more
core   +1 more source

Oocyte maturation and embryonic failure [PDF]

Human 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

Regulation of the G2/M Transition in Rodent Oocytes [PDF]

, 2010
Regulation of maturation in meiotically competent mammalian oocytes is a complex process involving the carefully coordinated exchange of signals between the somatic and germ cell compartments of the ovarian follicle via paracrine and cell–cell coupling ...
Downs, Stephen
core   +2 more sources