Results 121 to 130 of about 132,905 (308)

Comparing the potential effects of fresh and frozen nerve extracts of Holothuria arguinensis on the oocyte maturation. [PDF]

open access: yesبوم‌شناسی آبزیان, 2019
Female sea cucumbers maintain their oocytes in meiosis prophase I, and their maturation only occurs just before spawning. A new methodology for inducing in vitro oocyte maturation in sea cucumbers is to expose them to their nerve extract which contains ...
Bita Kalvani Neital   +4 more
doaj  

The Influence of Drosophila Spire and Myosin V During Mid‐Oogenesis Is Independent of Their Direct Interaction

open access: yesCytoskeleton, EarlyView.
ABSTRACT Cooperativity between cytoskeletal proteins is crucial for spatiotemporal coordination in biological processes, like oogenesis. In mammalian and Drosophila oogenesis, proper assembly and function of actin networks require coordination between actin assembly factors Spire and formins, as well as actin‐associated proteins like myosins and Rab ...
Joseph Y. Ong   +7 more
wiley   +1 more source

Bridging maternal effects and epitranscriptomics: A novel perspective in developmental biology

open access: yesDevelopmental Dynamics, EarlyView.
Abstract Maternal effects, encompassing both genetic (maternally expressed gene products) and non‐genetic (maternal state) influences, are powerful determinants of offspring phenotype, yet their RNA‐level mechanisms remain incompletely resolved. In parallel, epitranscriptomics, an emerging field centered on chemical modifications to RNA, has revealed ...
Ehsan Pashay Ahi
wiley   +1 more source

Acquisition of the oocyte developmental competence

open access: yes, 2013
Which is the molecular identity of the developmentally competent mouse oocyte? Using a model study in which MII oocytes arrest development at the 2-cell stage, we have brought up an OCT4 transcriptional network (OCT4-TN) that is present in MII oocytes ...
James Adjaye   +7 more
core  

Oocyte activation deficiency: a role for an oocyte contribution?

open access: yes, 2015
Infertility affects between 10 and 16% of couples worldwide. Twenty to 30% of cases of infertility are due to a male factor, 20-35% to a female factor, and 25-40% are due to both male and female factors.
Yeste, Marc   +14 more
core   +1 more source

Adult-onset hypothyroidism induces granulosa cell apoptosis and affects ovarian follicle development in rats

open access: yesFrontiers in Cell and Developmental Biology
IntroductionHypothyroidism is a common endocrine disorder in women, which could lead to ovulation disorders and infertility, however, the effects of adult-onset hypothyroidism on ovarian development and gene expression characteristics need further study ...
Shuyue Li   +9 more
doaj   +1 more source

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

open access: yesDevelopmental 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   +12 more
wiley   +1 more source

Embryonic development of the Mediterranean starfish Hacelia attenuata

open access: yesDevelopmental 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   +3 more
wiley   +1 more source

Mammalian Oocyte Cryopreservation - Review

open access: yes, 2023
Although oocyte cryopreservation represents one of the main objectives of the reproductive medicine and cryobiology in the last years, until now, regardless of the studied specie, there is no freezing protocol that will assure satisfactory survival rates
Ada Cean   +4 more
core  

KCNJ4 variants disrupt inward‐rectifier potassium channel function and cause refractory epilepsy

open access: yesEpilepsia, EarlyView.
Abstract Objective Epilepsy is a common neurological disorder with a strong genetic basis, most frequently arising from ion channel dysfunction. Although multiple inwardly rectifying potassium (Kir) channels have been implicated in epileptogenesis, the contribution of KCNJ4, which encodes the Kir2.3 channel, has not previously been established in human
Hu Pan   +20 more
wiley   +1 more source

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