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Volume 45, Number 2 >
In vitro viability of mouse 8-cell embryos vitrified in a simple solution of ethylene glycol
Title: | In vitro viability of mouse 8-cell embryos vitrified in a simple solution of ethylene glycol |
Authors: | BAUTISTA, Jose Arceo N. Browse this author | TAKAHASHI, Yoshiyuki Browse this author →KAKEN DB | KANAGAWA, Hiroshi Browse this author |
Keywords: | embryo | ethylene glycol | mouse | vitrification |
Issue Date: | 29-Aug-1997 |
Publisher: | The Graduate School of Veterinary Medicine |
Journal Title: | Japanese Journal of Veterinary Research |
Volume: | 45 |
Issue: | 2 |
Start Page: | 67 |
End Page: | 73 |
Abstract: | A study was made to determine if ethylene glycol (EG) can be used in a simple solution to vitrify mouse 8-cell embryos and to determine the critical factors that affect its success. Mouse 8-cell embryos were vitrified after exposure to 2M and 7M EG prepared in Dulbecco's phosphate buffered saline (PBS) with 10% heat-inactivated calf serum (CS). Mouse 8-cell embryos exposed to 2M EG for 2,5 and 10 min, and to 7M EG for 2 and 5 min had survival rates similar to the untreated controls (93.3-100%). No significant difference in their survival rates in vitro was observed. Higher room temperatures (>24℃) at exposure before cooling resulted in poor development rates to the blastocyst stage. The survival rates of embryos vitrified after 2 min in 7M EG at 18-22℃ room temperature did not differ significantly from the control, but embryos vitrified after 5 min had significantly lower survival rates (p<0.0001). In conclusion, effective vitrification of mouse 8-cell embryos can be achieved by initial exposure to 2M EG for 2-10 min followed by equilibration in 7M EG for 2 min at 18-22℃ room temperature. This study has shown that 7M EG in PBS with 10% CS is sufficient to provide cryoprotection of vitrified mouse 8-cell embryos and that exposure of the embryos to the vitrification solution at temperatures over 24℃ is critical to their subsequent development in vitro. |
Type: | bulletin (article) |
URI: | http://hdl.handle.net/2115/4586 |
Appears in Collections: | Japanese Journal of Veterinary Research > Volume 45, Number 2
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Submitter: 獣医学部図書室
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