第2天受精的卵母细胞中囊胚形成率较低。
Low blastocyst formation rates in day-2 fertilized oocytes.
作者信息
Gullett J, Grunert G M, Valdes C T, Dunn R C, Wun W S
机构信息
Obstetrical and Gynecological Associates, Houston, Texas 77504-1989, USA.
出版信息
J Assist Reprod Genet. 1998 Nov;15(10):594-8. doi: 10.1023/a:1020329326790.
PURPOSE
To examine the blastocyst formation rates of day-2 fertilized oocytes.
METHODS
A retrospective study of the outcomes/blastocyst formation of day-2 fertilized oocytes was undertaken.
RESULTS
Fertilization rates of day-1 and -2 oocytes by intra-cytoplasmic sperm injection were similar. The development frequencies to four cells were similar. However, the blastulation rates were significantly lower from the day-2 fertilized eggs. The fertilization rates from day-2 conventional in vitro fertilization reinsemination were lower than the fertilization rates of day-1 oocytes. The blastulation rates from day-2 fertilized eggs were also lower than the rates from day-1 fertilized eggs in the in vitro fertilization group.
CONCLUSIONS
Fertilization is not a good indicator to predict the viability of fertilized oocytes. Day-2 fertilized oocytes had significantly lower blastocyst formation rates than the rates from day-1 fertilized oocytes.
目的
研究第2天受精卵的囊胚形成率。
方法
对第2天受精卵的结局/囊胚形成进行回顾性研究。
结果
通过卵胞浆内单精子注射，第1天和第2天卵母细胞的受精率相似。发育至4细胞的频率相似。然而，第2天受精卵的囊胚形成率显著较低。第2天常规体外受精再受精的受精率低于第1天卵母细胞的受精率。在体外受精组中，第2天受精卵的囊胚形成率也低于第1天受精卵的囊胚形成率。
结论
受精并非预测受精卵活力的良好指标。第2天受精卵的囊胚形成率显著低于第1天受精卵的囊胚形成率。
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