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Volume 45, Number 2  >

In vitro viability of mouse 8-cell embryos vitrified in a simple solution of ethylene glycol

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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
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)
Appears in Collections:Japanese Journal of Veterinary Research > Volume 45, Number 2

Submitter: 獣医学部図書室

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