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Principais genes implicados na aquisição de competência oocitária
(Universidade Federal de Minas GeraisBrasilICA - INSTITUTO DE CIÊNCIAS AGRÁRIASUFMG, 2019)
Despite meiotic arrest at diplotene stage of prophase I, oocytes from most domestic mammals retain the capacity for gene transcription due to the presence of descondensation areas in chromatin. With meiosis resumption under ...
The putative roles of FSH and AMH in the regulation of oocyte developmental competence: from fertility prognosis to mechanisms underlying age-related subfertility
(2022-02-28)
BACKGROUND: Fertility loss during female ageing is associated with increasing basal FSH and decreasing anti-Müllerian hormone (AMH) concentrations, together with compromised oocyte quality, presumably due to increased ...
In vitro Developmental Competence of Adult Sheep Oocytes Treated with Roscovitine
(2016-04-01)
The efficiency of in vitro sheep embryo production is still low compared to that observed in vivo and in other species. In this context, meiotic inhibition strategies emerged as a promising alternative to improve this ...
Influência da suplementação do fator de crescimento epidermal (EGF) em diferentes momentos da maturação in vitro de oócitos caninos
(2017-01-01)
The aim of this study was to evaluate the influence of epidermal growth factor (EGF) on in vitro maturation of canine oocytes at different times of the process. Ovaries were collected from 55 bitches considered healthy and ...
Positive effects of amphiregulin on human oocyte maturation and its molecular drivers in patients with polycystic ovary syndrome
(Oxford University Press, 2022)
STUDY QUESTION: Does use of medium containing amphiregulin improve meiotic maturation efficiency in oocytes of women with polycystic ovary syndrome (PCOS) undergoing in vitro maturation (IVM) preceded by a capacitation ...
Effect of Hormonal Supplementation Periods and In Vitro Maturation Media on Developmental Competence of Pig Oocytes
(UNIV FED RIO GRANDE DO SUL, 2010)
Background: The oocyte ability to undergo successful fertilization, cleavage and embryonic development depends on meiotic maturation and developmental competence acquisition. In vitro maturation (IVM) protocols currently ...
Cytoplasmic maturation of bovine oocytes: Structural and biochemical modifications and acquisition of developmental competence
(ELSEVIER SCIENCE INC, 2009)
Oocyte maturation is a long process during which oocytes acquire their intrinsic ability to support the subsequent stages of development in a stepwise manner, ultimately reaching activation of the embryonic genome. This ...
Sequential analysis of global gene expression profiles in immature and in vitro matured bovine oocytes: potential molecular markers of oocyte maturation
(BIOMED CENTRAL LTD, 2011)
Background: Without intensive selection, the majority of bovine oocytes submitted to in vitro embryo production (IVP) fail to develop to the blastocyst stage. This is attributed partly to their maturation status and ...
Sequential analysis of global gene expression profiles in immature and in vitro matured bovine oocytes: potential molecular markers of oocyte maturation
(2011-03-16)
Abstract
Background
Without intensive selection, the majority of bovine oocytes submitted to in vitro embryo production (IVP) fail to develop to the blastocyst stage. This is ...
Sequential analysis of global gene expression profiles in immature and in vitro matured bovine oocytes: potential molecular markers of oocyte maturation
(2011-03-16)
Abstract
Background
Without intensive selection, the majority of bovine oocytes submitted to in vitro embryo production (IVP) fail to develop to the blastocyst stage. This is ...