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Paper Information

Journal:   JOURNAL OF ANIMAL BIOLOGY   summer 2017 , Volume 9 , Number 4 ; Page(s) 25 To 34.

The Effect of Using Natural Honey as New Cryoprotectant on Vitrified-warmed Blastocyst s Survival, Hatching and Implantation Rate

* Department of Animal Biotechnology, National Institute of Genetic Engineering and Biotechnology (NIGEB), Tehran, Iran
Vitrification process optimization, as a way to store embryos derived from assisted reproductive techniques, requires dealing with several destructive factors. The presence of carbohydrates as non-permeating cryoprotectants is an attempt in order to reduce these stresses. Since the combination use of sugars leads to better results, in this project, natural honey which consists of various monosaccharides and disaccharides was applied as an alternative to sucrose in mouse blastocyst vitrification. For this purpose, the first part of the experiment was conducted to determine the optimum concentration of honey in vitrification and warming solutions. The second part was designed to compare the effect of honey-based selected solutions and sucrose-based one in terms of survival, hatching and implantation rate. Among different concentrations of honey, optimum concentrations of 1 and 2 M were chosen for vitrification and thawing mediums, respectively. Results of the second part demonstrated that, not only the survival rate can be equal with sucrose when using honey, but it also brings about as good results as the sucrose-based group regarding the hatching rate and more importantly the implantation rate. Therefore, we can introduce natural honey, as an appropriate substitute for sucrose to optimization the vitrification process.
Keyword(s): Vitrification,Non-permeating,Cryoprotectant,Natural honey,Mouse blastocyst
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