background: oocyte cryopreservation is one of the most important topics in the field of assisted reproductive technology to preserve women fertility, but relationship between cryopreservation and apoptosis is still a matter of debate. the present study was aimed to investigate the effects of vitrification on apoptosis in mouse oocytes by cryotop method. method: a total of 200 germinal vesicle (...

Maintaining and restore the full developmental competence of either mature or immature oocytes after cryopreservation processes to preserve women fertility is a goal in assisted reproductive technologies (ART). This goal arises from the need of some patients to preserve their oocytes before arriving to a reproductively mature age, such as patients who need to undergo chemotherapy. Although in v...

Background Although ovarian tissue cryopreservation and transplantation is used for fertility preservation in patient undergoing cytotoxic treatments but obtaining good quality oocyte is still a debate. Xenotransplantation has been introduced as a reliable technique for better understanding of the transplantation conditions, but to achieve healthy embryos, the quality of obtained oocytes need t...

BACKGROUND Cryopreservation has been extensively used in assisted reproductive technology, agriculture and conservation programmes for endangered species. The literature reports largely positive results regarding the survival of frozen-thawed cells and clinical outcomes. Nonetheless, it is unclear whether or not cryopreservation of sperm, oocytes and embryos causes any disruption in their genet...

The cryopreservation of immature GV oocytes by vitrification is offering attractive perspectives, since they represent an important pool of germ cells for women undergoing IVM cycles, or at risk of infertility for OHSS or PCOs, particularly those poor responders to gonadotropin stimulation, or in case of cancer. Therefore, it becomes necessary to optimize both cryopreservation technique as well...

Gamete cryopreservation combined with in vitro embryo production (IVP) and cryopreservation of resultant embryos are important technologies for gene banking in domestic animals. Especially, cryopreservation of embryos and oocytes offers the possibility for the preservation of female genetic lines. Although several vitrification protocols have been developed for the cryopreservation of embryos a...

Despite the initial reactions of disapproval, more and more fertility clinics are now offering oocyte cryopreservation to healthy women in order to extend their reproductive options. However, so-called social freezing is not placed on an equal footing with 'regular' IVF treatments where public funding is concerned. In those countries or states where IVF patients receive a number of free cycles,...