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New approaches regarding the in vitro maturation of oocytes: Manipulating cyclic nucleotides and their partners in crime
(2017-01-01)
Several discoveries have been described recently (5-10 years) about the biology of ovarian follicles (oocyte, cumulus cells and granulosa cells), including new aspects of cellular communication, the control of oocyte ...
Control of oocyte maturation
(2014-01-01)
Oocyte maturation is a complex process involving nuclear and cytoplasmic maturation. The nuclear maturation is a chromosomal segregation and the cytoplasmic maturation involves the reorganization of the cytoplasmic organelles, ...
Control of oocyte maturation
(Brazilian Coll Animal Reproduction, 2014-07-01)
Oocyte maturation is a complex process involving nuclear and cytoplasmic maturation. The nuclear maturation is a chromosomal segregation and the cytoplasmic maturation involves the reorganization of the cytoplasmic organelles, ...
The use of transmission electron microscopy and oocyte transfer to evaluate in vitro maturation of equine oocytes in different culture conditions
(Elsevier B.V., 2006-04-01)
The current study evaluates the ability of equine oocytes matured in different conditions to undergo nuclear and cytoplasmic maturation.. After oocyte transfer, embryonic development was diagnosed at 1.5 and 90 days of ...
The use of transmission electron microscopy and oocyte transfer to evaluate in vitro maturation of equine oocytes in different culture conditions
(Elsevier B.V., 2006-04-01)
The current study evaluates the ability of equine oocytes matured in different conditions to undergo nuclear and cytoplasmic maturation.. After oocyte transfer, embryonic development was diagnosed at 1.5 and 90 days of ...
Coenzyme q10 improves the in vitro maturation of oocytes exposed to the intrafollicular environment of patients on fertility treatment
(Sociedade Brasileira de Reprodução Humana, 2020)
Objective: To evaluate the impact of patient follicular environment with oxidative stress on oocyte quality. Methods: Patients on fertility treatment with either advanced maternal age or endometriosis were asked to donate ...
Role of arachidonic acid cascade in Rhinella arenarum oocyte maturation
(Cambridge University Press, 2015-08)
There are no studies that document the production of prostaglandins (PGs) or their role in Rhinella arenarum oocyte maturation. In this study, we analysed the effect of arachidonic acid (AA) andprostaglandins (PGs) on ...
Follicular environment and oocyte maturation: roles of local peptides and steroids
(Brazilian Coll Animal Reproduction, 2017-07-01)
A large amount of data on the mechanisms regulating cumulus-oocyte maturation in mammals has been generated in the last 20 years. It has been made clear that oocyte-secreted factors play a central role in the control of ...
Immature oocyte quality and maturational competence of porcine cumulus-oocyte complex subpopulations
(Instituto de Histología y Embriología "Dr. Mario Burgos", 2009-12)
Porcine immature oocyte quality (i.e., that of live oocytes at the germinal vesicle stage) was evaluated according to features of the surrounding cumulus, aiming to establish maturational competence of different subpopulations ...
Ultrastructural characteristics of non-matured and in vitro matured oocytes collected from pre-pubertal and adult domestic cat ovaries
(2009-07-01)
The present study describes the ultrastructural characteristics of cat oocytes before maturation and after 12- and 24-h in vitro maturation (IVM). Oocytes were recovered from pre-pubertal and adult queen ovaries after ...