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O sistema peptídeos natriuréticos está presente no complexo cumulus-oócito e regula o reinício da meiose em bovinos
(Universidade Federal de Santa MariaBRMedicina VeterináriaUFSMPrograma de Pós-Graduação em Medicina Veterinária, 2013-02-20)
The process of meiotic resumption in oocytes, arrested since fetal life, and the
expansion of compact layers of cumulus cells is triggered by intrafollicular mediators
stimulated by LH. These events are extremely complex. ...
GDF-9 and BMP-15 mRNA levels in canine cumulus cells related to cumulus expansion and the maturation process
(MDPI, 2020)
Simple Summary The knowledge of physiological events associated with canine reproduction involving oocyte developmental potential is essential to increase the success of reproductive biotechnologies in this species. In ...
Effects of FSH on the expression of receptors for oocyte-secreted factors and members of the EGF-like family during in vitro maturation in cattle
(2013-07-22)
FSH induces expansion of bovine cumulus-oocyte complexes (COCs) in cattle, which can be enhanced by oocyte-secreted factors (OSFs). In this study it was hypothesised that FSH stimulates COC expansion in part from direct ...
Effects of FSH on the expression of receptors for oocyte-secreted factors and members of the EGF-like family during in vitro maturation in cattle
(2013-07-22)
FSH induces expansion of bovine cumulus-oocyte complexes (COCs) in cattle, which can be enhanced by oocyte-secreted factors (OSFs). In this study it was hypothesised that FSH stimulates COC expansion in part from direct ...
Influence of the cumulus and gonadotropins on the metabolic profile of porcine cumulus-oocyte complexes during in vitro maturation
(Wiley Blackwell Publishing, Inc, 2012-10)
The aim of this work was to examine the influence of the cumulus and gonadotropins on the metabolic profile of porcine cumulus oocyte complexes (COCs) during in vitro maturation. Immature COCs were assigned to morphological ...
Effect of melatonin on DNA damage of bovine cumulus cells during in vitro maturation (IVM) and on in vitro embryo development
(Elsevier B.V., 2012-02-01)
The effect of melatonin during in vitro maturation (IVM) on DNA damage of cumulus cells (CCs) from bovine cumulus-oocyte complexes (COCs) and embryo development was evaluated. COCs from abattoir ovaries were cultured in ...
Human sperm chemotaxis: Both the oocyte and its surrounding cumulus cells secrete sperm chemoattractants
(Oxford University Press, 2005-03)
Background: Human sperm chemotaxis to pre-ovulatory follicular fluid is well established in vitro. However, it is not known whether the female's oocyte-cumulus complex secretes sperm chemoattractants subsequent to ovulation ...
Steroid hormones interact with natriuretic peptide C to delay nuclear maturation, to maintain oocyte-cumulus communication and to improve the quality of in vitro-produced embryos in cattle
(Csiro Publishing, 2017-10-01)
In vivo, oocyte maturation is triggered by the ovulatory LH surge, whereas in vitro it is precociously induced when the cumulus-oocyte complex is removed from the follicle. Natriuretic peptide C (NPPC) delays germinal ...
Expression and localization of urokinase-type plasminogen activator receptor in bovine cumulus-oocyte complexes
(Cambridge University Press, 2016-04)
Urokinase-type plasminogen activator (uPA) is a serine protease involved in extracellular matrix remodeling through plasmin generation. uPA usually binds to its receptor, uPAR, which is anchored to the plasma membrane ...