Efficiency of human oocyte and embryo vitrification

Mini-review, 2 – 11
doi: 10.11138/cce/2014.1.1.002
In the last two decades, the evolution and accomplishment of different cryopreservation strategies have achieved efficient and reproducible protocols to successfully cryopreserve human reproductive cells. This review article examines the recent literature highlighting researches on the effectiveness of human oocyte and embryo cryopreservation.
The vitrification efficiency has been mainly monitored by comparing in vitro and in vivo performances of vitrified cells with those obtainable with slow frozen cells as well as with fresh cells.
Since vitrification has been recognized as the most efficient cryopreservation procedure for metaphase II oocytes as well as for embryos at different stages of preimplantation development, it is not conceivable anymore an In Vitro
Fertilization (IVF) set-up without a competent and robust cryopreservation facility.