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Evolution of human oocyte cryopreservation: slow freezing versus vitrification

, : Evolution of human oocyte cryopreservation: slow freezing versus vitrification. Current Opinion in Endocrinology, Diabetes, and Obesity 23(6): 445-450

The purpose is to determine the efficiency and efficacy of oocyte cryopreservation by slow freezing versus vitrification, recent data collected from the Italian National Assisted Reproductive Technology Register during the period 2009-2014 will be presented and reviewed. The data on oocyte cryopreservation were also compared with the results obtained with embryo cryopreservation and relative IVF with fresh oocytes. During the period 2009-2014 preservation of oocytes by vitrification had a significantly higher survival rate, implantation, and pregnancy rate than slow freezing; however, there are still large variations in success rates among centers in relation to the number of procedures performed. Vitrification has now become the method of choice for oocyte cryopreservation because of better results than slow freezing, but still requires a more standardized utilization. The transfer of fresh or cryopreserved embryo still shows a statistically significant better performance than transfers with embryos obtained with cryopreserved oocytes. Only in a few centers with much experience in cryopreservation are the results between transfers of frozen embryos or embryos obtained from oocyte cryopreservation comparable.


PMID: 27653002

DOI: 10.1097/MED.0000000000000289

Other references

Morrison, P.R.; Seiler, A.L.; Head, J.M., 1950: Studies on adhesion and syneresis in fibrin clots. An abstract.

Fraenkel, L.; Martins, T., 1939: Estudos sobre a fisiologia sexual das serpentes. I. O corpo amarelo. II. A inserYao do ovo. III. PresenYa da estrina nos foliculos ovarianos. Memorias do Instituto Butantan, 13: 393-406

Gómez-Mares, M.; Muñoz, M.; Casal, J., 2010: Axial temperature distribution in vertical jet fires. The behaviour of vertical commercial propane jet fires (flame lengths of up to 8m) was studied experimentally. The temperatures along the jet fire centreline were measured using a set of thermocouples and the flame contour was determined from infr...

Pinder, A.M.; Trayler, K.M.; Mercer, J.W.; Arena, J.; Davis, J.A., 1993: Diel periodicities of adult emergence of some chironomids and a mayfly at a Western Australian wetland. Diel periodicities of adult emergence for three species of Chironomidae and one Caenidae from a Perth wetland were recorded during spring and summer. All chironomid species emerged mainly at dusk, regardless of sex, with the peak rate of emergence...

Chatterton, S.; Punja, Z.K., 2009: Chitinase and -1,3-glucanase enzyme production by the mycoparasite Clonostachys rosea f catenulata against fungal plant pathogens. Canadian Journal of Microbiology 55(4): 356-367

Zhao ZhengYang; Zhang CuiHua; Liu ZiLong; Liang Jun; L.J.aRui, 2006: Studies on lead pollution in the apple orchards on the side of expressway. On west side of the expressway 210 in Luochuan county of Shaanxi province, the contents of Lead in apple fruits, leaves and soil were studied from Yongxiang section and Jingzhao section alongside the expressway. The results showed that the surface...

Bergman C.; Gualberto D.; Weber C., 1991: Nutritional evaluation of soft wheat pasta supplemented with cowpea. Cereal Foods World 36(8): 709

Koornneef, E., 2006: Measuring quality in services for children with an intellectual disability. To evaluate the application of one particular quality measurement tool, the SERVQUAL instrument, as a potential mechanism to measure quality in services for children with disabilities Staff and family of children with an intellectual disability in...

Wyeth, F.J., 1924: On the development and neuromery of the fore-brain in Sphenodon punctatus. Proceedings of the Zoological Society of London, 923-959

Balis, M.E.; Hylin, V.; Coultas, M.K.; Hutchinson, D.J., 1958: Metabolism of resistant mutants of Streptococcus faecalis. III. The action of 6-mercaptopurine. Cancer Research 18(4): 440-444