Results 21 to 30 of about 256,819 (357)

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

The influence of timing of oocytes retrieval and embryo transfer on the IVF-ET outcomes in patients having bilateral salpingectomy due to bilateral hydrosalpinx

Frontiers in Surgery, 2023
ObjectiveThe objective of the study was to investigate whether the sequence of oocyte retrieval and salpingectomy for hydrosalpinx affects pregnancy outcomes of in vitro fertilization and embryo transfer (IVF-ET) patients.Study DesignThere were 1,610 ...
He Yilei, He Yilei, He Yilei, He Yilei, Yang Shuo, Yang Shuo, Yang Shuo, Yang Shuo, Ma Caihong, Ma Caihong, Ma Caihong, Ma Caihong, Yang Yan, Yang Yan, Yang Yan, Yang Yan, Song Xueling, Song Xueling, Song Xueling, Song Xueling, Zhang Jiajia, Zhang Jiajia, Zhang Jiajia, Zhang Jiajia, Liu Ping, Liu Ping, Liu Ping, Liu Ping, Li Rong, Li Rong, Li Rong, Li Rong, Qiao Jie, Qiao Jie, Qiao Jie, Qiao Jie   +35 more
doaj   +1 more source

Apoptosis in mouse fetal and neonatal oocytes during meiotic prophase one [PDF]

, 2007
Background The vast majority of oocytes formed in the fetal ovary do not survive beyond birth. Possible reasons for their loss include the elimination of non-viable genetic constitutions arising through meiosis, however, the ...
Ghafari , Fataneh, Gutierrez , Carlos G., Hartshorne, Geraldine M.   +2 more
core   +4 more sources

Cdk1 inactivation induces post-anaphase-onset spindle migration and membrane protrusion required for extreme asymmetry in mouse oocytes

Nature Communications, 2018
Female meiotic divisions are asymmetric with the formation of large oocytes and small polar bodies, thought to result from cortical spindle placement before anaphase.
Zhe Wei, Jessica Greaney, Chenxi Zhou, Hayden A. Homer   +3 more
doaj   +1 more source

Biosynthesis and expression of zona pellucida glycoproteins in mammals [PDF]

, 2001
The zona pellucida (ZP) is an extracellular matrix surrounding the oocyte and the early embryo that exerts several important functions during fertilization and early embryonic development.
Kölle, S., Sinowatz, Fred, Töpfer-Petersen, E.   +2 more
core   +1 more source

Genomic function during the lampbrush chromosome stage of amphibian oogenesis [PDF]

, 1966
Throughout its lengthy developmental history the disposition of the genetic material in the amphibian oocyte nucleus differs from that in other cell types.
Crippa, Marco, Davidson, Eric H., Kramer, Fred R., Mirsky, Alfred E.   +3 more
core   +1 more source

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

Freeze/thaw stress induces organelle remodeling and membrane recycling in cryopreserved human mature oocytes [PDF]

, 2016
Purpose: Our aim was to evaluate the ultrastructure of human metaphase II oocytes subjected to slow freezing and fixed after thawing at different intervals during post-thaw rehydration.
Albani, E., Borini, A., Coticchio, G., Levi Setti, P. E., Lorenzo, C., Macchiarelli, G., NOTTOLA, Stefania Annarita, Palmerini, M. G., Scaravelli, G.   +8 more
core   +1 more source

Histology of the oocytes of Lutjanus peru (Nichols and Murphy, 1922) (Pisces: Lutjanidae)

Ciencias Marinas, 2001
The distinctive characteristics found in each of the development stages of the oocyte in the ovary of Lutjanus peru (Pacific red snapper) are described.
G Lucano-Ramírez, M Villagrán-SantaCruz, S Ruiz-Ramírez, T López-Murillo   +3 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, Freeman, Edward A.   +1 more
core   +2 more sources