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Effect of cumulus cells of cumulus-oocyte complexes on in vitro maturation, embryonic developmental and expression pattern of apoptotic genes after in vitro fertilization in water buffalo (Bubalus bubalis) .
- Source :
-
Animal biotechnology [Anim Biotechnol] 2020 Apr; Vol. 31 (2), pp. 135-141. Date of Electronic Publication: 2019 Mar 23. - Publication Year :
- 2020
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Abstract
- In the present study, the potential of different grades of cumulus-oocyte complexes (COCs) for in vitro maturation (IVM) and embryonic development was assessed. Further, the association of the expression pattern of anti-apoptotic Mcl-1 and pro-apoptotic Bax genes in embryonic development was analyzed. Abattoir derived oocytes were graded into grade A and B based on surrounding cumulus rings. Out of 1050 ovaries, a total number of 770 and 1360, were of grade A and B COCs, respectively, were aspirated. After IVM, grade A COCs had a significantly higher number of polar bodies (92.04 ± 0.60%) as compared to grade B (85.88 ± 0.46%). On IVF and embryo culture, grade A COCs produced the significantly higher rate of cleavage and blastocyst (90.44 ± 0.71% and 41.55 ± 0.96%) as compared to grade B COCs (79.77 ± 0.76% and 30.44 ± 0.96%). The transcriptional analysis of apoptotic genes expression by Real-time PCR revealed a significantly higher expression of Mcl-1 gene in embryos of grade A as compared to grade B, whereas, the relative expression of Bax gene was down-regulated in grade A than grade B embryos. Thus it was concluded that the pattern of apoptotic genes expression in early-stage embryos can be used as a marker gene to predict the developmental competence of COCs.
- Subjects :
- Animals
Apoptosis physiology
Fertilization in Vitro veterinary
In Vitro Oocyte Maturation Techniques methods
bcl-2-Associated X Protein genetics
bcl-2-Associated X Protein metabolism
Buffaloes embryology
Cumulus Cells physiology
Embryonic Development physiology
Gene Expression Regulation, Developmental physiology
In Vitro Oocyte Maturation Techniques veterinary
Oocytes physiology
Subjects
Details
- Language :
- English
- ISSN :
- 1532-2378
- Volume :
- 31
- Issue :
- 2
- Database :
- MEDLINE
- Journal :
- Animal biotechnology
- Publication Type :
- Academic Journal
- Accession number :
- 30905313
- Full Text :
- https://doi.org/10.1080/10495398.2018.1554580