人卵母细胞玻璃化冷冻的临床应用及成功分娩

目的探讨人卵母细胞玻璃化冷冻保存的方法及临床应用价值。方法将从促排卵周期获得的人的卵母细胞用冷冻环进行玻璃化冷冻保存,复苏后行卵细胞浆内单精子注射-胚胎移植,观察复苏后卵母细胞形成胚胎的发育能力。结果冷冻后融解235个卵母细胞,存活169个（71．9％,169／235）,受精122个（72．2％,122／169）。移植11例,获得临床妊娠2例。第1例于2005年12月15日妊娠35^＋2周行剖宫产,为双胎女婴,均发育正常。第2例为单胎妊娠,现妊娠16周,目前胎儿及孕妇健康。结论卵母细胞玻璃化冷冻是一种较理想的保存女性生育力的方法,但是其技术应用于临床有待进一步研究和实践。

Successful clinical pregnancy of cryopreserved human oocytes after vitrification

Objective To assess the feasibility and clinical value of cryopreservation of human oocytes. Methods Human oocytes were collected during stimulated cycle and then vitrificated with cryoloop. Surviving oocytes were thawed and then inseminated by intracytoplasmic sperm injection (ICSI). The fertilized oocytes were further cultured in vitro for 48 - 72 hours. High-quality embryos were transferred to the patients of infertility with informed consent. Results A total of 235 oocytes were vitrificated and thawed. The survival and fertilization rates of the oocytes were 71.9% and 72. 5% respectively. Forty-one embryos were transferred to 11 patients. Two of the 11 patients achieved pregnancy, one of which gave birth of 2 healthy female twin babies and the other was at the 16 th week of pregnancy. The mother and babies were all healthy. Conclusion Human oocyte vitrification is safe and feasible.