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Transvaginal ultrasound-guided cumulus oocyte complexes aspiration and in vitro embryo production in suckled beef and lactating dairy cattle on pasture-based management conditions
(2011)
This study was conducted to determine the use of repeated transvaginal ultrasound-guided cumulus oocyte complex (COC) aspiration on COC recovery rate, in vitro embryo production (IVP) and subsequent pregnancy rates in ...
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 ...
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 ...
Morfologia de células murais da granulosa e do cumulus oophorus
(HCPA/FAMED/UFRGS, 2012)
In vitro maturation impacts cumulus-oocyte complex metabolism and stress in cattle
(Bioscientifica Ltd, 2017-12-01)
The influence of in vitro maturation (IVM) in oocytes is still not totally understood. The aim of this study was to determine the influence of IVM on the metabolism and homeostasis of bovine cumulus-oocyte complexes. In ...
The presence of acylated ghrelin during in vitro maturation of bovine oocytes induces cumulus cell DNA damage and apoptosis, and impairs early embryo development
(Cambridge University Press, 2017-09)
The aim of this study was to investigate the effects of acylated ghrelin supplementation during in vitro maturation (IVM) of bovine oocytes. IVM medium was supplemented with 20, 40 or 60 pM acylated ghrelin concentrations. ...
Expresión de la proteína morfogénica ósea 15 (bmp-15) durante la maduración in vitro de ovocitos caninos
(Univ Zulia, Facultad Ciencias Veterinarias, 2016)
This research aims to characterize the pattern of expression of BMP-15 during in vitro maturation of canine oocyte. BMP-15 is a follicular factor related to the oocyte maturation, taking part in cumulus cells expansion and ...
Meiotic arrest of sheep oocytes using roscovitine under different medium compositions
(Elsevier B.V., 2015-05-01)
Attempts to maintain the meiotic arrest under suitable culture conditions have been performed in order to improve the quality of oocytes in vitro matured. So, our study aimed to evaluate the potential of roscovitine, an ...
Detection of bovine herpesvirus 1 in cumulus-oocyte complexes of cows
(Research in Veterinary Science, 2019)