Results 81 to 90 of about 392,164 (310)

Control of gonad growth, maturation and spawning in teleost fish: A review [PDF]

, 1996
Despite their great variety of reproductive strategies, a general characteristic of most teleosts is that (where known) natural reproduction shows a long-term periodicity, even in tropical habitats (e.g. see contributions in Munro et al.
Lam, Tom J., Munro, Angus D.
core   +1 more source

Effects of lanosterol on in vitro maturation of porcine oocytes [PDF]

, 2010
[EN] FF-MAS and T-MAS sterols, intermediaries in the cholesterol biosynthetic pathway present in all cells, may represent the physiological signal that instructs the crocyte to reinitiate meiosis.
Marco-Jiménez, Francisco, Llobat, L, Vicente Antón, José Salvador   +2 more
core   +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

Biphasic in-vitro maturation: an advancement over traditional in-vitro maturation

MedPharmRes
Culture conditions for standard in-vitro maturation (IVM) have remained largely unchanged for more than 50 years and are non-physiological, limiting the success of this form of assisted reproductive technology (ART).
Lan N Vuong, Tuong M Ho, Robert B. Gilchrist   +2 more
openaire   +1 more source

Hyperosmotic stress induces PARP1‐mediated HPF1‐dependent mono(ADP‐ribosyl)ation

FEBS Letters, EarlyView.
Sorbitol‐induced hyperosmotic stress rapidly induces reversible mono(ADP‐ribosyl)ation (MARylation) on PARP1 without the signs of genotoxic signaling. We show that PARP1 autoMARylation is HPF1 dependent and forms hydroxylamine‐resistant O‐glycosidic linkages.
Anna Georgina Kopasz, Mihály Mérey, Rebeka Vásárhelyi, Ramóna Pék, Victor Imburchia, László Henn, Adrián Kószó, Nicholas D. Lakin, Ivan Ahel, Sébastien Huet, Ágnes Czibula, Gyula Timinszky   +11 more
wiley   +1 more source

Epigenetic blind spots – the role of DNA methylation dynamics in stem cell‐based models of embryogenesis

FEBS Letters, EarlyView.
Embryo‐like structures (stembryos) are an innovative tool, but they are hindered by experimental variability and limited developmental potential. DNA methylation is crucial for mammalian development, but its status in stembryo models is poorly characterized.
Sara Canil, Anna Corrà, Annalisa Scapolatiello, Chengxiang Qiu, Gianluca Amadei   +4 more
wiley   +1 more source

FERTILIZACION DE OVOCITOS CAPRINOS MADURADOS EN DOS MEDIOS DE CULTIVO

Tropical and Subtropical Agroecosystems, 2010
El objetivo del estudio fue evaluar el efecto de dos medios de cultivo en la tasa de maduración y fertilización de ovocitos de cabra. Los complejos cumulus ovocito (CCO´s) fueron obtenidos de ovarios de cabras post-mortem. En el experimento I (EXP I),
Alejandra Soberano Martinez, A. Bravo, I. Olivo, I. Toscano, M. Cajero, J. Herrera, M. Navarro, J. Segura   +7 more
doaj  

Degradation mechanism of the von Willebrand factor A2 domain by nattokinase

FEBS Letters, EarlyView.
Nattokinase, a natto‐derived protease, exhibits potent antithrombotic effects. This study demonstrates that nattokinase directly cleaves the von Willebrand factor (vWF) A2 domain in vitro. Unlike the native regulator ADAMTS13, nattokinase degrades folded vWF independently of shear stress.
Ryuichi Hyakumoto, Masatomo So, Ayako Furukawa, Kenji Sugase   +3 more
wiley   +1 more source

From mice to humans—divergent strategies for intestinal homeostasis and regeneration

FEBS Letters, EarlyView.
Recent advances such as organoid genome editing, xenotransplantation, imaging, and whole‐genome sequencing have enabled direct studies of human intestinal stem cells (ISCs). These studies reveal species‐specific features, including slower ISC proliferation, distinct injury responses, slower somatic mutation accumulation in humans, and an inverse ...
Keiko Ishikawa, Shinya Sugimoto, Toshiro Sato   +2 more
wiley   +1 more source

Determination of non-invasive viability markers for human embryos in in vitro fertilization. [PDF]

, 2010
The major challenge currently facing human in vitro fertilization (IVF) programs is the prevention of multiple gestation pregnancies. The replacement of multiple embryos to fertility patients is common practice to increase pregnancy rates.
Feil, Deanne Kate
core   +1 more source