Prediction of Oocyte Developmental Competence in Ovine Using Glucose-6-phosphate Dehydrogenase (G6PDH) Activity Determined at Retrieval Time
Overview
Reproductive Medicine
Authors
Affiliations
Purpose: To determine whether G6PDH-activity measured by Brilliant Cresyl Blue known as BCB dye, predicts developmental competence within cohorts of ovine oocytes.
Methods: Ovine oocytes were exposed to BCB staining and categorized into two groups: BCB+ (blue cytoplasm, low G6PDH-activity) and BCB- (colorless cytoplasm, high G6PDH-activity). After maturation in vitro, oocytes were subjected to fertilization followed by in vitro embryo culture.
Results: We observed a significant difference in oocyte diameter considering BCB+ and BCB- oocytes. BCB+ and Control groups showed significantly higher maturation rates compared to BCB- group. There were significantly more cleaved embryos in BCB+ and control groups than in BCB- group. Blastocyst rate was significantly higher for BCB+ group compared to control and BCB- groups with control group being significantly higher than BCB- group.
Conclusion: G6PDH-activity is a strong predictive marker of oocyte competence and may be useful in identifying oocytes with a good prognosis for further develop.
Maside C, Sanchez-Ajofrin I, Medina-Chavez D, Alves B, Garde J, Soler A Animals (Basel). 2021; 11(10).
PMID: 34679840 PMC: 8532595. DOI: 10.3390/ani11102818.
Turathum B, Gao E, Chian R Cells. 2021; 10(9).
PMID: 34571941 PMC: 8470117. DOI: 10.3390/cells10092292.
Oocyte maturation with royal jelly increases embryo development and reduces apoptosis in goats.
Veshkini A, Mohammadi-Sangcheshmeh A, Ghanem N, Abazari-Kia A, Mottaghi E, Kamaledini R Anim Reprod. 2021; 15(2):124-134.
PMID: 34122643 PMC: 8186877. DOI: 10.21451/1984-3143-2017-AR986.
Dutta R, Mandal S, Lin H, Raz T, Kind A, Schnieke A J R Soc Interface. 2020; 17(172):20200776.
PMID: 33143591 PMC: 7729053. DOI: 10.1098/rsif.2020.0776.
Piras A, Ariu F, Zedda M, Paramio M, Bogliolo L Animals (Basel). 2020; 10(9).
PMID: 32847086 PMC: 7552244. DOI: 10.3390/ani10091496.