Results 131 to 140 of about 53,055 (306)

Oocyte membrane maturation and oocyte-sperm relationship: Transmission electron microscopy study

, 2003
CINCIK, Mehmet/0000-0002-0717-1756The success of in vitro maturation (IVM) depends greatly on the acquisition of immature oocytes. Immature oocytes in prophase I (PI) and metaphase I (MI), aspirated after controlled ovarian hyperstimulation, were ...
Sezen, S.C., Cincik, M.
core   +1 more source

Oogenesis and germinal bed morphology of the brown anole (A. sagrei)

Developmental Dynamics, EarlyView.
Abstract Background The brown anole is a model species of the genus Anolis, a squamate (encompassing lizards and snakes) group widely studied in evolutionary, behavioral, and developmental biology. Full genome annotation, the establishment of gene editing techniques, and comprehensive description of reproductive tract morphology and embryogenesis in ...
Bonnie K. Kircher, Antonia Weberling, Erin J. Vance, Natalia A. Shylo, Katherine Starr, Zoe B. Griffin, Hannah Wilson, Melainia McClain, Florian Hollfelder, Suzannah A. Williams, Thomas J. Sanger, Richard R. Behringer, Paul A. Trainor   +12 more
wiley   +1 more source

Cortisol prevents the suppressive effect of LPS on bovine oocyte maturation in vitro

The Journal of Reproduction and Development
During the periovulatory period, local production of cortisol surges in the bovine cumulus-oocyte complex (COC), although its physiological significance is not well understood.
Sameera PREMARATNE, Mahiro TAMURA, Omowumi ADEMOLA, Yuki MURANISHI, Masafumi TETSUKA   +4 more
doaj   +1 more source

Chemical signals that regulate mammalian oocyte maturation.

, 1984
The nature and functions of the chemical signals involved in the acquisition of competence to resume meiosis, and the maintenance of meiotic arrest in antral follicles are the subjects of this paper.
Eppig, J J, Downs, S M
core  

Embryonic development of the Mediterranean starfish Hacelia attenuata

Developmental Dynamics, EarlyView.
Abstract Background Starfish play essential ecological roles as predators and ecosystem regulators; however, detailed developmental descriptions exist for only a handful of species, none of which are from the Mediterranean Sea. Results In this study, we provide the first full account of the development of the Mediterranean starfish Hacelia attenuata ...
Silvia Caballero‐Mancebo, Laurent Gilletta, Janet Chenevert, Stefania Castagnetti   +3 more
wiley   +1 more source

Single-oocyte full-length isoform sequencing unveils the impact of transposable elements on RNA diversity and stability

Nature Communications
Oocyte-specific isoforms play crucial roles in oocyte maturation, while current understanding of the oocyte transcriptome is mainly focused on gene level.
Yuqian Wang, Wei Wang, Yujun Liu, Yiming He, Hongyu Song, Ming Yang, Nan Wang, Xiaomeng Wang, Ling Ding, Ying Kuo, Yuwen Xiu, Zhengrong Du, Lu Chen, Ying Lian, Qiang Liu, Liying Yan, Jie Qiao, Peng Yuan   +17 more
doaj   +1 more source

Precision therapies for genetic epilepsies in 2025: Promises and pitfalls

Epilepsia Open, EarlyView.
Abstract By targeting the underlying etiology, precision therapies offer an exciting paradigm shift to improve the stagnant outcomes of drug‐resistant epilepsies, including developmental and epileptic encephalopathies. Unlike conventional antiseizure medications (ASMs) which only treat the symptoms (seizures) but have no effect on the underlying ...
Shuyu Wang, Emilio Perucca, Samuel F. Berkovic, Piero Perucca   +3 more
wiley   +1 more source

Oocyte maturation in assisted reproductive techniques

, 2006
Human oocyte maturation is a long process during which nuclear maturation occurs resulting in germinal vesicle breakdown (transition from prophase I to metaphase II) and extrusion of the first polar body.
Loutradis, D., Zapanti, E., Antsaklis, A., Kiapekou, E.   +3 more
core  

Mitochondrial dynamics during mouse oocyte maturation [PDF]

, 2011
Mitochondria provide the primary source of ATP for the oocyte and pre-implantation embryo and undergo a number of redistributions during oocyte maturation which may be related to developmental competence.
Dalton, C.M.
core  

Impact of donor mare and stallion identity on the likelihood of pregnancy after transfer of in vitro produced embryos

Equine Veterinary Journal, EarlyView.
Abstract Background The success of in vitro embryo production (IVEP) is influenced by donor mare and stallion. Objectives To determine whether donor mare and stallion influence the pregnancy rate after transfer of in vitro produced (IVP) blastocysts and to identify factors influencing the likelihood of obtaining one or more pregnancies from a single ...
M. Papas, T. A. E. Stout, J. C. M. Vernooij, B. Leemans, L. Arnold, M. M. Beitsma, L. I. Wijnands, M. de Ruijter‐Villani, S. Colleoni, G. Lazzari, C. Galli, A. Claes   +11 more
wiley   +1 more source