Sui L, Xu J, Fu H, Wu R, Zhou J, Lu J, Chen L and Yao B
Objective: To investigate the change of glycometabolism in the offspring from in vitro fertilization through fresh embryo and vitrified embryo transplantation, and evaluate the effect of vitrification technology on the health of offspring. Materials and method: Offspring mice from fresh embryo transfer (FET) and vitrified embryo transfer (VET) were divided into two groups. Natural mating mice were used as the control. Introperitoneal glucose tolerance (IPGTT) and insulin tolerance test (IPITT) were performed in the adulthood offsprings. Total RNA was extracted from 14.5dpc fetus and neonate livers, and glycometabolism-related genes were detected by quantitative RT-PCR. Results: The glucose levels of IPGTT at 30 min and 120 min in offspring mice from VET were significantly higher than control, and the glucose level at 120 min was significantly higher than that in FET. In liver tissues from 14.5 dpc embryos, the mRNA expression of Igf1 and Igf2 in FET and VET groups, the mRNA expression of Glut8 in VET was significantly higher than that in the control. In livers of newly born mice, the mRNA expression of Igf1 and Igf2 in FETï¼Ã?¯Ã?¿Ã?½Glut1 and Glut2 in FET and VET was significantly lower than that in the control.VET and FET, especially VET, may affect the glycometabolism of offspring mice.
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