Results 41 to 50 of about 256,819 (357)

THE EFFECTIVITY OF CYSTEAMINE SUPPLEMENTATION ON IMPROVING THE IN VITRO FERTILIZATION RATE OF SHEEP OOCYTES

open access: yesJurnal Kedokteran Hewan, 2021
The purpose of this study was to evaluate the effectiveness of cysteamine supplementation on the maturation medium and/or in vitro fertilization medium with regards to improving the normal fertilization rate of sheep oocytes, which are characterized by ...
Dona Astari Nurkarimah   +3 more
doaj   +1 more source

A Requirement for Fatty Acid Oxidation in the Hormone-Induced Meiotic Maturation of Mouse Oocytes [PDF]

open access: yes, 2013
We have previously shown that fatty acid oxidation (FAO) is required for AMP-activated protein kinase (PRKA)-induced maturation in vitro. In the present study, we have further investigated the role of this metabolic pathway in hormone-induced meiotic ...
Downs, Stephen, Valsangkar, Deepa
core   +2 more sources

Comparison of ovarian cycles of Hungarian riverine fish species representing different spawning strategies [PDF]

open access: yes, 2008
Investigations on the ovarian cycle of fish species that inhabit Hungarian rivers are necessitated by both environmental and economic reasons. The objective of our research was to explore new fundamental knowledge concerning the ovarian cycle of the ...
Baska, Ferenc   +6 more
core   +1 more source

Glycolytic metabolites are critical modulators of oocyte maturation and viability. [PDF]

open access: yesPLoS ONE, 2013
The maturation of an oocyte into an egg is a key step in preparation for fertilization. In Xenopus, oocyte maturation is independent of transcription, being regulated at the level of translation and post-translational modifications of proteins.
Lloyd Berger, Andrew Wilde
doaj   +1 more source

Effect of Endometriosis on Cumulus ATP, Number of Mitochondria and Oocyte Maturity in Cumulus Oocyte Complex in Mice

open access: yesRevista Brasileira de Ginecologia e Obstetrícia, 2023
Objective Endometriosis causes a decrease in oocyte quality. However, this mechanism is not fully understood. The present study aimed to analyze the effect of endometriosis on cumulus cell adenosine triphosphate ATP level, the number of mitochondria, and
Muhammad Ardianta Widyanugraha   +2 more
doaj   +1 more source

On the origin of trisomy 21 Down syndrome [PDF]

open access: yes, 2008
Background: Down syndrome, characterized by an extra chromosome 21 is the most common genetic cause for congenital malformations and learning disability.
Hultén, Maj A.   +6 more
core   +2 more sources

A surge in cytoplasmic viscosity triggers nuclear remodeling required for Dux silencing and pre-implantation embryo development

open access: yesCell Reports
Summary: Embryonic genome activation (EGA) marks the transition from dependence on maternal transcripts to an embryonic transcriptional program. The precise temporal regulation of gene expression, specifically the silencing of the Dux/murine endogenous ...
Yunan Ye, Hayden Anthony Homer
doaj   +1 more source

Comparison of obstetric outcomes of pregnancies after donor-oocyte In vitro fertilization and self-oocyte In vitro fertilization: A retrospective cohort study

open access: yesJournal of Human Reproductive Sciences, 2018
Aims:The aim of this study is to evaluate and compare multiple obstetric and perinatal outcomes between donor-oocyte in vitro fertilization (IVF) and self-oocyte IVF group. Settings and Design: This study was done in a tertiary care center with ART unit.
Vikas Yadav   +5 more
doaj   +1 more source

Lipid modification to improve cryotolerance of gametes, embryos and larvae and its potential application in aquaculture species: a review

open access: yesFrontiers in Marine Science, 2023
Cryopreservation is a technique to maintain biological materials’ physiological and genetic stability at an ultralow temperature. For commercially important livestock or aquatic species, gamete and embryo cryopreservation could play a significant role in
Xiaochen Zhu   +8 more
doaj   +1 more source

Oocyte-secreted factors enhance oocyte developmental competence

open access: yesDevelopmental Biology, 2006
The capacity of fully grown oocytes to regulate their own microenvironment by paracrine factors secreted by the oocyte (oocyte-secreted factors, OSFs) may in turn contribute to oocyte developmental competence. Here, we investigated if OSFs have a direct influence on oocyte developmental competence during in vitro maturation (IVM). Bovine cumulus-oocyte
Hussein, T., Thompson, J., Gilchrist, R.
openaire   +3 more sources

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