Lin S P, Lee R K, Su J T, Lin M H, Hwu Y M
Department of Medical Research, Mackay Memorial Hospital, Tamshui, Taipei, Taiwan.
J Assist Reprod Genet. 2000 Jul;17(6):344-8. doi: 10.1023/a:1009409229068.
To investigate whether very short exposure of mature oocytes to sperm in vitro may affect the fertilization rates, embryo cleavage rates, and embryo quality between sibling oocytes in the same patient.
Sibling oocytes of the same patient from 23 oocyte collection cycles were randomly allocated to the study group, with a 1-hr or 3-hr sperm-oocyte incubation, or the control group with the standard overnight gamete co-incubation. The fertilization rates, cleavage rates, and subsequent embryo quality were evaluated.
Our results showed no statistically significant differences in fertilization rates, embryo cleavage rates, and quality of the embryos between the study group and the control group.
Since the present study showed that long exposure of the oocyte to sperm has no advantage over short exposure, we prefer shortening the oocyte-sperm incubation period for reducing the negative effect induced by nonphysiologically high concentrations of spermatozoa.
研究成熟卵母细胞在体外与精子的极短时间接触是否会影响同一患者同胞卵母细胞之间的受精率、胚胎分裂率和胚胎质量。
从23个卵母细胞采集周期中选取同一患者的同胞卵母细胞,随机分为研究组,进行1小时或3小时的精卵共孵育,以及对照组,进行标准的过夜配子共孵育。评估受精率、分裂率和随后的胚胎质量。
我们的结果显示,研究组和对照组之间在受精率、胚胎分裂率和胚胎质量方面没有统计学上的显著差异。
由于本研究表明卵母细胞与精子的长时间接触并不比短时间接触更具优势,我们倾向于缩短精卵孵育时间,以减少非生理性高浓度精子诱导的负面影响。