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Study aim
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Determination of the effects of calcium ionophore on human oocyte in vitro maturation outcome, fertilization rate and embryo development
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Design
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In this controlled clinical trial, participants are divided into two groups of intervention and control.
In this study, immature immature oocytes unable use for ICSI will be used in this study after getting participants consent. Then, after approval by the ethics committee of Shahid Beheshti University of Medical Sciences, patients who undergo ovulation stimulation for ICSI are enrolled in the study.
Sample size includes 210 oocytes and 150 embryos that obtained from study participants.
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Settings and conduct
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Germinal vesicle stage (GV) oocytes enter the two groups: intervention group (Treatment with calcium ionophore) and control group (Group without calcium ionophore)
After 24-28 hours, in IVM-derived MII oocytes, nuclear maturation rate , cytoplasm maturation rate, cytoplasm oxidative stress level, meiotic spindle structure, apoptosis rate and MPF and MAPK genes expression will be evaluated.
Subsequently, MII oocytes from IVM in the treatment group with ionophosphorus calcium and the control group will be under microinjection with sperm. fertilization rate, cleavage rate and embryo quality will be evaluated .
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Participants/Inclusion and exclusion criteria
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Inclusion criteria: Approval of the Ethics Committee of Shahid Beheshti University of Medical Sciences, women age between 20-40 years. Sperms have a normal parameter according to WHO criteria
Exit criteria:Endometriosis, Polycystic ovarian syndrome, Chromosomal abnormalities
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Intervention groups
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1. Treatment with calcium ionophore: Each oocytes is placed in a 30-ml drop of ionophore calcium A23187 for 15 minutes, then washed in two 30-microliter drops of the culture medium.
2. Group without calcium ionophore (control)
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Main outcome variables
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Glutathione level, expression of MPF and MAPK, meiotic spindle structure, ROS level, expression of BAX, BCL2 and caspase-3 genes, fertilization rate, embryo quality, cleavage rate