Results 41 to 50 of about 380,066 (397)

Zygoparity and sex steroid hormone profiles in bluemouth Helicolenus dactylopterus [PDF]

open access: yes, 2017
Two hundred and seven individuals (103 females and 104 males) of bluemouth Helicolenus dactylopterus (Scorpaeniformes, Sebastidae), a commercially important deep-water species with an unusual reproductive strategy, from the eastern Atlantic Ocean ranging
Barcellos   +30 more
core   +1 more source

Impact of Oxidative Stress on Age-Associated Decline in Oocyte Developmental Competence

open access: yesFrontiers in Endocrinology, 2019
Reproductive capacity in women starts to decline beyond their mid-30s and pregnancies in older women result in higher rates of miscarriage with aneuploidy.
Hiroyuki Sasaki   +7 more
semanticscholar   +1 more source

Impact of Maternal Age on Oocyte and Embryo Competence

open access: yesFrontiers in Endocrinology, 2018
The overall success of human reproduction, either spontaneously or after IVF, is highly dependent upon maternal age. The main reasons for age-related infertility include reduced ovarian reserve and decreased oocyte/embryo competence due to aging insults,
D. Cimadomo   +5 more
semanticscholar   +1 more source

Transmission of mitochondrial DNA following assisted reproduction and nuclear transfer [PDF]

open access: yes, 2006
Review of the articleMitochondria are the organelles responsible for producing the majority of a cell's ATP and also play an essential role in gamete maturation and embryo development.
Alam   +200 more
core   +2 more sources

Human embryos from overweight and obese women display phenotypic and metabolic abnormalities [PDF]

open access: yes, 2014
STUDY QUESTION Is the developmental timing and metabolic regulation disrupted in embryos from overweight or obese women? SUMMARY ANSWER Oocytes from overweight or obese women are smaller than those from women of healthy weight, yet post-fertilization ...
Leary, C.   +5 more
core   +1 more source

Oocyte, embryo and blastocyst cryopreservation in ART: systematic review and meta-analysis comparing slow-freezing versus vitrification to produce evidence for the development of global guidance

open access: yesHuman Reproduction Update, 2016
BACKGROUND Successful cryopreservation of oocytes and embryos is essential not only to maximize the safety and efficacy of ovarian stimulation cycles in an IVF treatment, but also to enable fertility preservation.
L. Rienzi   +7 more
semanticscholar   +1 more source

The spatiotemporal expression pattern of the bone morphogenetic protein family in rat ovary cell types during the estrous cycle. [PDF]

open access: yes, 2003
In the mammalian ovary, great interest in the expression and function of the bone morphogenetic protein (BMP) family has been recently generated from evidence of their critical role in determining folliculogenesis and female fertility.
Erickson, Gregory F, Shimasaki, Shunichi
core   +3 more sources

Aspects of follicular and oocyte maturation that affect the developmental potential of embryos.

open access: yesJournal of reproduction and fertility. Supplement, 2019
The ability to mature, be fertilized and finally to develop into a viable embryo is acquired gradually by the oocyte during progressive differentiation throughout folliculogenesis.
P. Mermillod, B. Oussaid, Y. Cognié
semanticscholar   +1 more source

Regulation of fatty acid oxidation in mouse cumulus-oocyte complexes during maturation and modulation by PPAR agonists.

open access: yesPLoS ONE, 2014
Fatty acid oxidation is an important energy source for the oocyte; however, little is known about how this metabolic pathway is regulated in cumulus-oocyte complexes.
Kylie R Dunning   +4 more
doaj   +1 more source

Reorganization, specialization, and degradation of oocyte maternal components for early development

open access: yesReproductive Medicine and Biology, 2023
Background Oocyte components are maternally provided, solely determine oocyte quality, and coordinately determine embryo quality with zygotic gene expression.
Yuhkoh Satouh, Ken Sato
doaj   +1 more source

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