Not exact matches
In 1998, Kuwayama started testing on
human oocytes and embryos.
«What drives the decline
in oocyte quality
in human females is chromosome abnormalities,» Hassold says.
As with
humans, he says, the
oocytes of C. elegans also show an increase
in chromosome abnormalities with aging.
In humans and other mammals, the female reproductive cells — the eggs or oocytes — need nourishment in order to grow and remain fertil
In humans and other mammals, the female reproductive cells — the eggs or
oocytes — need nourishment
in order to grow and remain fertil
in order to grow and remain fertile.
Human oocytes were collected by laparoscopy and fertilized and cultured
in vitro.
Mindful of public sensitivities, Daley opted to pursue experiments using what he considers the least controversial
human materials to create new nonpresidential stem cell lines — poor quality embryos and
oocytes that,
in his words, «otherwise would have been disposed of as medical waste.»
To do this, they used a nanotemplate of known stoichiometry (the
human Glycine receptor expressed
in Xenopus
oocytes) and studied several fluorescent proteins to see the percentage of proteins that was photoactivated.
«The idea will be to obtain
oocytes and discarded embryos from IVF treatments
in order to test this technology using
human samples.»
Montreal —
In humans and other mammals, the female reproductive cells — the eggs or oocytes — need nourishment in order to grow and remain fertil
In humans and other mammals, the female reproductive cells — the eggs or
oocytes — need nourishment
in order to grow and remain fertil
in order to grow and remain fertile.
Outline title: «First live birth using
human oocytes reconstituted by spindle nuclear transfer for mitochondrial DNA mutation causing Leigh syndrome» by J. Zhang et al. published
in outline form by the American Society of Reproductive Medicine's Fertility and Sterility journal website.
Appearance of an
oocyte activation - related substance during spermatogenesis
in mice and
humans.
Oocyte activation ability correlates with head flatness and presence of perinuclear theca substance
in human and mouse sperm.
Scientists publishing
in the journal Cell Stem Cell have reported the production of functional
human oocytes from discarded genetic material, a process which they suggest could one day assist
in fertility treatment or mitochondrial replacement therapy.
While many important developments impacted the field, two that garnered significant public, political and scientific attention
in 2016 were the proliferation of clinics using unproven stem cell «therapies,» and the steps forward
in therapeutic modification of
human oocytes (unfertilized eggs) through a process called mitochondrial replacement therapy (MRT).
As outlined below, we used a microfluidic quantitative PCR (qPCR) system to elucidate the gene expression profiles of individual
human oocytes and small numbers of cumulus cells using a combination of a large number of samples and targets [12], and then extended our studies via the use of parthenogenesis,
in conjunction with gene expression profiling, as a functional assay of cytoplasmic maturation of
oocytes.
Both animal and
human studies have demonstrated the important roles of neurotrophins (BDNF, NTF3 and NTF4)
in oocyte maturation mediated by their receptors (NTRK1 — 3 and NGFRAP1)[20], [25].
Since the first report of
in vitro
human oocyte maturation
in 1969 [3], several reports have documented blastocyst (BL) development or live birth achieved from
oocytes matured
in vitro [1], [4], [5].
Immature
human oocytes were matured
in vitro via supplementation with ovarian paracrine / autocrine factors that were selected based on expression of ligands
in the cumulus cells and their corresponding receptors
in oocytes.
11:00 AM
Human «MeioMaps»: Genome - wide meiotic recombination and chromosome segregation outcomes in individual human ooc
Human «MeioMaps»: Genome - wide meiotic recombination and chromosome segregation outcomes
in individual
human ooc
human oocytes.