Please use this identifier to cite or link to this item:
|Title:||Effects of granulosa coculture on in-vitro oocyte meiotic maturation within a putatively less competent murine model|
|Authors:||Heng, B.C. |
|Citation:||Heng, B.C., Tong, G.Q., Ng, S.C. (2004). Effects of granulosa coculture on in-vitro oocyte meiotic maturation within a putatively less competent murine model. Theriogenology 62 (6) : 1066-1092. ScholarBank@NUS Repository. https://doi.org/10.1016/j.theriogenology.2003.12.013|
|Abstract:||A less competent murine in vitro maturation (IVM) model was achieved by shortening the standard duration of in vivo PMSG stimulation from 48 to 24 h and selecting only naked/partially naked GV oocytes from a mixture of large and small follicles. Porcine granulosa coculture enhanced meiotic maturation within such a less competent model (37.3% versus 23.1%, P<0.05), while no significant enhancement was observed with macaque and murine granulosa coculture. Culture of porcine granulosa on extracellular matrix (ECM) gel resulted in a more differentiated morphology, but did not significantly further enhance the beneficial effects it already had on meiotic maturation. Increased concentrations of serum as well as the supplementation of gonadotrophins and follicular fluid within the culture milieu did not enhance IVM under both cell-free and coculture conditions. Porcine granulosa-conditioned medium also enhanced meiotic maturation (36.5% versus 26.7%, P<0.05), which was not diminished upon freeze-thawing (35.8% versus 22.6%, P<0.05). Enhancement of meiotic maturation by porcine granulosa coculture did not however translate to significant improvements in developmental competence, as assessed by in vitro fertilization (IVF) and embryo culture to the blastocyst stage, followed by total cell counts. ECM gel had a detrimental effect on fertilization and developmental competence, even though it had no detrimental effect on meiotic maturation itself. © 2004 Elsevier Inc. All rights reserved.|
|Appears in Collections:||Staff Publications|
Show full item record
Files in This Item:
There are no files associated with this item.
checked on Dec 6, 2018
WEB OF SCIENCETM
checked on Nov 28, 2018
checked on Oct 27, 2018
Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.