Results 51 to 60 of about 48,631 (292)

Molecular Mechanisms of Gonadotropin-Induced Oocyte Maturation [PDF]

, 2004
In vitro maturation of oocytes is routinely utilized for the production of embryos for commercial as well as research purposes. The objectives of the research described in this dissertation were: 1) to examine the molecular mechanism involved in ...
Rodriguez, Karina Flores
core  

Small RNA pathways in mammalian oocytes

FEBS Open Bio, EarlyView.
Three distinct small RNA pathways operate in mammalian oocytes: RNAi interference (RNAi), the microRNA (miRNA) pathway, and the PIWI‐associated RNA (piRNA) pathway. These pathways use small RNAs to guide sequence‐specific repression and contribute to oocyte biology by targeting genes and mobile elements or appear insignificant since different ...
Petr Svoboda, Josef Pasulka
wiley   +1 more source

ATZ‐1 promotes DNA replication efficiency to maintain normal meiotic function

FEBS Open Bio, EarlyView.
Absence of ATZ‐1 interferes with meiotic DNA replication and cell cycle function via CHK‐1. This causes downstream defects associated with DNA damage and genomic integrity. Taken together, this study suggests that ATZ‐1 influences DNA replication efficiency and cell cycle function to maintain normal meiotic function.
Taylin E. Gourley, Luke W. Molesworth, Nethma H. Waduge, Fahimeh Eskandari, Peter R. Boag, Gregory M. Davis   +5 more
wiley   +1 more source

Participação do fator de crescimento fibroblástico 18 (FGF18) na maturação nuclear oocitária, expansão das células do cumulus e produção in vitro de embriões bovinos [PDF]

, 2015
Dissertação (mestrado) - Universidade Federal de Santa Catarina, Centro de Ciências Biológicas, Programa de Pós-Graduação em Biologia Celular e do Desenvolvimento, Florianópolis, 2015.Este trabalho propôs estudar a ação do Fator de Crescimento ...
Silva, Yago Pinto da
core  

Calcium signaling in oocyte quality and functionality and its application

Frontiers in Endocrinology
Calcium (Ca2+) is a second messenger for many signal pathways, and changes in intracellular Ca2+ concentration ([Ca2+]i) are an important signaling mechanism in the oocyte maturation, activation, fertilization, function regulation of granulosa and ...
Chen Chen, Zefan Huang, Shijue Dong, Mengqian Ding, Jinran Li, Miaomiao Wang, Xuhui Zeng, Xiaoning Zhang, Xiaoli Sun   +8 more
doaj   +1 more source

Oocyte activation and phospholipase C zeta (PLCζ): diagnostic and therapeutic implications for assisted reproductive technology

Cell Communication and Signaling, 2012
Infertility affects one in seven couples globally and has recently been classified as a disease by the World Health Organisation (WHO). While in-vitro fertilisation (IVF) offers effective treatment for many infertile couples, cases exhibiting severe male
Ramadan Walaa M, Kashir Junaid, Jones Celine, Coward Kevin   +3 more
doaj   +1 more source

Managing the Oocyte Meiotic Arrest—Lessons from Frogs and Jellyfish

Cells, 2020
During oocyte development, meiosis arrests in prophase of the first division for a remarkably prolonged period firstly during oocyte growth, and then when awaiting the appropriate hormonal signals for egg release. This prophase arrest is finally unlocked
Catherine Jessus, Catriona Munro, Evelyn Houliston   +2 more
doaj   +1 more source

Fertilization and activation currents in bovine oocytes [PDF]

Reproduction, 2002
Abstract One of the first events that occurs at fertilization is a transient modification of the electrical properties of the oocyte plasma membrane. The whole-cell voltage clamp technique was used to demonstrate an outward ion current and a hyperpolarization of the plasma membrane after fertilization in bovine oocytes.
TOSTI E., BONI, Raffaele, CUOMO A.
openaire   +2 more sources

At Home Detection of Ovarian Health Biomarker in Menstruation Blood

Advanced Materials Technologies, EarlyView.
A lateral flow assay enables the detection of anti‐Müllerian hormone directly in unprocessed menstrual blood using silica‐gold nanoshells and smartphone‐assisted machine learning analysis. The platform supports decentralized, user‐operated testing in wearable and dipstick formats, highlighting the potential of menstrual blood as a non‐invasive matrix ...
Lucas Dosnon, Thomas Rduch, Salma Sherif Azer, Inge K. Herrmann   +3 more
wiley   +1 more source

Maternal effects on oocyte quality in farmed Atlantic halibut (Hippoglossus hippoglossus L.) [PDF]

, 2013
Atlantic halibut (Hippoglossus hippoglossus) oocyte quality is highly variable and one of the major bottlenecks during fry-production for on-growth in commercial Atlantic halibut farming.
Mommens, Maren
core