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Comparison of ethylene glycol, 1,2-propanediol and glycerol for cryopreservation of slow-cooled mouse zygotes, 4-cell embryos and blastocysts
- Source :
- Human Reproduction. 15:905-910
- Publication Year :
- 2000
- Publisher :
- Oxford University Press (OUP), 2000.
-
Abstract
- The aim of the study was to analyse the toxicity, the osmolar and cryoprotective activity of ethylene glycol (ETG) in terms of survival rate (SR), cleavage rate (CR) and expanded blastocysts percentage (EBP) of mouse embryos. Early mouse embryos and blastocysts were slowly cooled with ETG, 1,2-propanediol (PROH) or glycerol, and thawed. The Van t'Hoff curve for 1.5 mol/l ETG showed recovery of initial volume within 4 min. No differences were observed in CR and EBP of ETG-exposed compared with non-exposed mouse zygotes. The SR of zygotes frozen with PROH was significantly better than with ETG (92% and 60% respectively; P < 0.01), and a significantly better EBP was achieved for blastocysts frozen with glycerol compared with ETG (75% and 50% respectively; P < 0.05). For 4-cell stage embryos, no differences were observed in SR and EBP between ETG and PROH. Higher EBP was observed for 4-cell stage embryos (53%) frozen with ETG compared with pronucleate stage (19%) and blastocysts (48%). Low toxicity, good SR and EBP were observed for mouse embryos frozen with ETG, the best results being obtained at the 4-cell stage. At other embryonic stages, PROH and glycerol respectively seemed to provide better results.
- Subjects :
- Glycerol
Ethylene Glycol
Zygote
Biology
Cryopreservation
Propanediol
Andrology
Mice
chemistry.chemical_compound
Cryoprotective Agents
medicine
Animals
Blastocyst
Rehabilitation
Obstetrics and Gynecology
Embryo
Embryo, Mammalian
Propylene Glycol
Mice, Inbred C57BL
medicine.anatomical_structure
Reproductive Medicine
Biochemistry
chemistry
embryonic structures
Toxicity
Mice, Inbred CBA
Female
Ethylene glycol
Subjects
Details
- ISSN :
- 14602350
- Volume :
- 15
- Database :
- OpenAIRE
- Journal :
- Human Reproduction
- Accession number :
- edsair.doi.dedup.....ed0ca5624ef500146e5e7fcfb86b925e