The effects of granulosa cell apoptosis on the developmental competence of bovine oocytes: A study using the well-in-well culture system

2013 ◽  
Author(s):  
Weiguo Feng ◽  
Guohui Wang ◽  
Zhifang Pan ◽  
Chune Ren
Keyword(s):  
Granulosa Cell ◽  
Cell Apoptosis ◽  
Culture System ◽  
Developmental Competence ◽  
Bovine Oocytes

The Effect of Granulosa Cells Apoptosis on the Cumulus Expansion and the Developmental Competence of Bovine Oocytes

2014 ◽  
Vol 997 ◽  
pp. 251-254 ◽  
Author(s):  
Wei Guo Feng ◽  
Zhi Fang Pan
Keyword(s):  
Granulosa Cells ◽  
Culture System ◽  
Developmental Competence ◽  
Bovine Oocyte ◽  
Cumulus Expansion ◽  
Oocyte Developmental Competence ◽  
Bovine Oocytes

In this study, we used the well in the well (WIW) culture system to study the effect of granulosa cells apoptosis on the cumulus expansion and the developmental competence of bovine oocytes. Results: The apoptosis of granulosa cells affect the cumulus expansion of bovine oocytes significantly. Especially when the percentage of granulosa cells apoptosis exceed 40%, the cumulus expansion was worse. The cumulus expansion affect the oocyte developmental competence of bovine oocytes significantly. The developmental competence of bovine oocyte increases with the increasing of cumulus expansion.

The Effects of Floating Granulosa Cells Density on the Developmental Competence of Bovine Oocytes: A Study Using the Well-in-Well Culture System

2014 ◽  
Vol 884-885 ◽  
pp. 544-547
Author(s):  
Wei Guo Feng ◽  
Chun E Ren ◽  
Zhi Fang Pan
Keyword(s):  
Granulosa Cells ◽  
Culture System ◽  
Developmental Competence ◽  
Group System ◽  
Apoptosis Rate ◽  
Oocyte Developmental Competence ◽  
Bovine Oocytes ◽  
Hatching Rates

In this study, we succeed to establish the well in the well (WIW) culture system. Using this system we studied the effect of floating granulosa cells density on oocyte developmental competence. Results: Apoptosis rate of the floating cells were high (73.576.3%) and did not differ (P > 0.05) among follicles of different sizes. Hatching rates of blastocysts did not differ (P > 0.05) between oocytes cultured in the WIW system (13.3%) and those cultured in the group system (16.3%). In 4-8mm follicles, oocyte developmental competence is higher (P < 0.05) in follicles with 1030×105/mL floating cells than in follicles with < 10 or >30%×105/mL floating cells.

Effects of follicular atresia and size on the developmental competence of bovine oocytes: A study using the well-in-drop culture system

2007 ◽  
Vol 67 (8) ◽  
pp. 1339-1350 ◽  
Author(s):  
W.-G. Feng ◽  
H.-S. Sui ◽  
Z.-B. Han ◽  
Z.-L. Chang ◽  
P. Zhou ◽  
...  
Keyword(s):  
Culture System ◽  
Developmental Competence ◽  
Follicular Atresia ◽  
Bovine Oocytes

LncRNA PVT1 Overexpression Improves Premature Ovarian Insufficiency by Inhibiting Granulosa Cell Apoptosis

2019 ◽  
Author(s):  
Fang Wang ◽  
Xuemei Chen ◽  
Bo Sun ◽  
Yujia Ma ◽  
Wenbin Niu ◽  
...  
Keyword(s):  
Granulosa Cell ◽  
Cell Apoptosis ◽  
Premature Ovarian Insufficiency ◽  
Ovarian Insufficiency

Ufmylation regulates granulosa cell apoptosis via ER stress but not oxidative stress during goat follicular atresia

2021 ◽  
Vol 169 ◽  
pp. 47-55
Author(s):  
Xinyan Zhang ◽  
Tong Yu ◽  
Xinyan Guo ◽  
Ruixue Zhang ◽  
Yanni Jia ◽  
...  
Keyword(s):  
Oxidative Stress ◽  
Er Stress ◽  
Granulosa Cell ◽  
Cell Apoptosis ◽  
Follicular Atresia

Supplementation of c-type natriuretic peptide during in vitro growth period benefits the development of murine preantral follicles

Zygote ◽  
2020 ◽  
pp. 1-5
Author(s):  
Li Ang ◽  
Cao Haixia ◽  
Li Hongxia ◽  
Li Ruijiao ◽  
Guo Xingping ◽  
...  
Keyword(s):  
Natriuretic Peptide ◽  
Granulosa Cells ◽  
Culture System ◽  
Early Stage ◽  
Developmental Competence ◽  
Control Group ◽  
Follicle Development ◽  
Control Groups ◽  
Preantral Follicles

Summary The present study investigated the effects of c-type natriuretic peptide (CNP) on the development of murine preantral follicles during in vitro growth (IVG). Preantral follicles isolated from ovaries of Kunming mice were cultured in vitro. In the culture system, CNP was supplemented in the experimental groups and omitted in the control groups. In Experiment 1, CNP was only supplemented at the early stage and follicle development was evaluated. In Experiments 2 and 3, CNP was supplemented during the whole period of in vitro culture. In Experiment 2, follicle development and oocyte maturity were evaluated. In Experiment 3, follicle development and embryo cleavage after in vitro fertilization (IVF) were assessed. The results showed that in the control groups in all three experiments, granulosa cells migrated from within the follicle and the follicles could not reach the antral stage. In the experimental groups in all three experiments, no migration of granulosa cells was observed and follicle development was assessed as attaining the antral stage, which was significantly superior to that of the control group (P < 0.0001). Oocyte meiotic arrest was effectively maintained, hence giving good developmental competence. In conclusion, CNP supplementation in the culture system during IVG benefited the development of murine preantral follicles.

scholarly journals N-acetyl-L-cysteine Improves the Developmental Competence of Bovine Oocytes and Embryos Cultured In Vitro by Attenuating Oxidative Damage and Apoptosis

Antioxidants ◽  
2021 ◽  
Vol 10 (6) ◽  
pp. 860
Author(s):  
Wu-Sheng Sun ◽  
Hoon Jang ◽  
Mi-Ryung Park ◽  
Keon Bong Oh ◽  
Haesun Lee ◽  
...  
Keyword(s):  
Embryonic Development ◽  
Early Stage ◽  
Developmental Competence ◽  
Beneficial Effects ◽  
Developmental Rates ◽  
A Cell ◽  
Bovine Oocytes ◽  
Dose Dependent

Oxidative stress has been suggested to negatively affect oocyte and embryo quality and developmental competence, resulting in failure to reach full term. In this study, we investigated the effect of N-acetyl-L-cysteine (NAC), a cell-permeating antioxidant, on developmental competence and the quality of oocytes and embryos upon supplementation (0.1–10 mM) in maturation and culture medium in vitro using slaughterhouse-derived oocytes and embryos. The results show that treating oocytes with 1.0 mM NAC for 8 h during in vitro maturation attenuated the intracellular reactive oxygen species (ROS) (p < 0.05) and upregulated intracellular glutathione levels (p < 0.01) in oocytes. Interestingly, we found that NAC affects early embryonic development, not only in a dose-dependent, but also in a stage-specific, manner. Significantly (p < 0.05) decreased cleavage rates (90.25% vs. 81.46%) were observed during the early stage (days 0–2), while significantly (p < 0.05) increased developmental rates (38.20% vs. 44.46%) were observed during the later stage (from day 3) of embryonic development. In particular, NAC supplementation decreased the proportion of apoptotic blastomeres significantly (p < 0.05), resulting in enhanced hatching capability and developmental rates during the in vitro culture of embryos. Taken together, our results suggest that NAC supplementation has beneficial effects on bovine oocytes and embryos through the prevention of apoptosis and the elimination of oxygen free radicals during maturation and culture in vitro.

scholarly journals Heat Shock Protein 70 Improves In Vitro Embryo Yield and Quality from Heat Stressed Bovine Oocytes

Animals ◽  
2021 ◽  
Vol 11 (6) ◽  
pp. 1794
Author(s):  
Konstantina Stamperna ◽  
Themistoklis Giannoulis ◽  
Eleni Dovolou ◽  
Maria Kalemkeridou ◽  
Ioannis Nanas ◽  
...  
Keyword(s):  
Gene Expression ◽  
Heat Shock ◽  
Heat Shock Protein ◽  
Heat Shock Protein 70 ◽  
Cumulus Cells ◽  
Intramolecular Interactions ◽  
Developmental Competence ◽  
Embryo Yield ◽  
Bovine Oocytes

Heat shock protein 70 (HSP70) is a chaperon that stabilizes unfolded or partially folded proteins, preventing inappropriate inter- and intramolecular interactions. Here, we examined the developmental competence of in vitro matured oocytes exposed to heat stress with or without HSP70. Bovine oocytes were matured for 24 h at 39 °C without (group C39) or with HSP70 (group H39) and at 41 °C for the first 6 h, followed by 16 h at 39 °C with (group H41) or without HSP70 (group C41). After insemination, zygotes were cultured for 9 days at 39 °C. Cleavage and embryo yield were assessed 48 h post insemination and on days 7, 8, 9, respectively. Gene expression was assessed by RT-PCR in oocytes, cumulus cells and blastocysts. In C41, blastocysts formation rate was lower than in C39 and on day 9 it was lower than in H41. In oocytes, HSP70 enhanced the expression of three HSP genes regardless of incubation temperature. HSP70 at 39 °C led to tight coordination of gene expression in oocytes and blastocysts, but not in cumulus cells. Our results imply that HSP70, by preventing apoptosis, supporting signal transduction, and increasing antioxidant protection of the embryo, protects heat stressed maturing bovine oocyte and restores its developmental competence.

scholarly journals SMAD4-induced knockdown of the antisense long noncoding RNA BRE-AS contributes to granulosa cell apoptosis

2021 ◽  
Author(s):  
Wang Yao ◽  
Xing Du ◽  
Jinbi Zhang ◽  
Yang Wang ◽  
Miaomiao Wang ◽  
...  
Keyword(s):  
Granulosa Cell ◽  
Cell Apoptosis ◽  
Long Noncoding Rna ◽  
Noncoding Rna
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