Results 61 to 70 of about 280,910 (369)

M-phase promoting factor (MPF) and mitogen activated protein kinases (MAPK) activities of domestic cat oocytes matured in vitro and in vivo [PDF]

open access: yes, 2004
This work was undertaken in order to examine M-phase promoting factor (MPF) and mitogen-activated protein kinases (MAPK) activities during meiotic progression of cat oocytes cultured in two different media for two different incubation times and ...
Bogliolo, Luisa   +8 more
core  

Perturbing Microtubule Integrity Blocks AMP-Activated Protein Kinase-Induced Meiotic Resumption in Cultured Mouse Oocytes [PDF]

open access: yes, 2012
The oocyte meiotic spindle is comprised of microtubules (MT) that bind chromatin and regulate both metaphase plate formation and karyokinesis during meiotic maturation; however, little information is known about their role in meiosis reinitiation.
Downs, Stephen, Ya, Ru
core   +2 more sources

A comparative study of saffron aqueous extract and its active ingredient, crocin on the in vitro maturation, in vitro fertilization, and in vitro culture of mouse oocytes

open access: yesTaiwanese Journal of Obstetrics & Gynecology, 2014
Objective: Reactive oxygen species have effects on gamete quality and gamete interaction; they influence spermatozoa, oocytes, embryos, and their environment.
Elham Mokhber Maleki   +6 more
doaj   +1 more source

Possible role of human ribonuclease dicer in the regulation of R loops

open access: yesFEBS Open Bio, EarlyView.
R loops play an important role in regulating key cellular processes such as replication, transcription, centromere stabilization, or control of telomere length. However, the unscheduled accumulation of R loops can cause many diseases, including cancer, and neurodegenerative or inflammatory disorders. Interestingly, accumulating data indicate a possible
Klaudia Wojcik   +2 more
wiley   +1 more source

In vitro maturation of germinal vesicle oocytes in stimulated intracytoplasmic sperm injection cycles [PDF]

open access: yes, 2011
Objective: This study evaluated in vitro maturation (IVM) of oocytes in the germinal vesicle (GV) stage in stimulated intracytoplasmic sperm injection (ICSI) cycles.
Esmaelzadeh, S.   +3 more
core  

Factors affecting the in vitro embryo production in buffalo (Bubalus bubalis): A review

open access: yesVeterinární Medicína, 2023
Under natural and well-managed conditions, the buffalo has good reproductive and productive indices. However, in vitro embryo production (IVEP) has been used commercially to maximise the number of elite animals.
S Kumar   +7 more
doaj   +1 more source

Murine Models and Human Cell Line Models to Study Altered Dynamics of Ovarian Follicles in Polycystic Ovary Syndrome

open access: yesAdvanced Biology, EarlyView.
The manuscript examines preclinical murine and human models to study polycystic ovary syndrome (PCOS), delving into the cellular and molecular mechanisms underlying altered ovarian follicular dynamics. It explores the cellular interactions involved in normal and PCOS ovaries and outlines the current and novel strategies in the search for preclinical ...
Arturo Bevilacqua   +5 more
wiley   +1 more source

Tyrosine decaging leads to substantial membrane trafficking during modulation of an inward rectifier potassium channel [PDF]

open access: yes, 2001
Tyrosine side chains participate in several distinct signaling pathways, including phosphorylation and membrane trafficking. A nonsense suppression procedure was used to incorporate a caged tyrosine residue in place of the natural tyrosine at position ...
Brandt, Gabriel S.   +7 more
core   +3 more sources

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   +4 more sources

Relationship of Follicular Size to the Development of Intracytoplasmic Sperm Injection-derived Human Embryos

open access: yesTaiwanese Journal of Obstetrics & Gynecology, 2010
Objective: To compare the embryonic development of oocytes obtained from follicles of different sizes. Materials and Methods: Oocytes (n = 819) were retrieved from women at 40 years of age or younger during 86 in vitro fertilization cycles and ...
Tsai-Fang Lee   +5 more
doaj   +1 more source

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