Hattori Hiromitsu, Nakamura Yusuke, Nakajo Yukiko, Araki Yasuhisa, Kyono Koichi
Kyono ART Clinic, Mitsui-Seimei, Sendai Honcho Bl, 3F, 1-1-1 Honcho, Aoba-ku, Sendai, Miyagi, 980-0014, Japan.
J Assist Reprod Genet. 2014 Nov;31(11):1461-7. doi: 10.1007/s10815-014-0323-z. Epub 2014 Sep 10.
To examine the impact on development of derived embryos from smooth endoplasmic reticulum clusters (SERC) in human metaphase II (MII) oocytes.
Retrospective analysis at Kyono ART Clinic. Comparison of embryological development, pregnancy, live birth and fetal malformation between oocytes with SERC (the SERC(+) group) and those without (the SERC(-) group) in 2,158 patients (3,758 cycles) after ICSI.
Fertilization and implantation rate were significantly lower in SERC(+) MII oocytes than in SERC(-) MII oocytes. After the transfer of fresh and vitrified embryos derived from SERC(+) oocytes, 14 pregnancies resulted in 14 healthy babies, including 2 from fresh embryo transfer (ET) and 12 from vitrified-warmed ET, with no malformations.
CONCLUSION(S): The presence of SERC in MII oocytes was associated with significantly lower fertilization rates and implantation rates than seen in SERC(-) MII oocytes within SERC (+) cycles. However, SERC had no impact on post-implantation development as well as neonatal outcome.
研究人中期 II(MII)卵母细胞中滑面内质网簇(SERC)对衍生胚胎发育的影响。
在基野辅助生殖诊所进行回顾性分析。比较2158例患者(3758个周期)卵胞浆内单精子注射(ICSI)后,有SERC的卵母细胞(SERC(+)组)和无SERC的卵母细胞(SERC(-)组)之间的胚胎发育、妊娠、活产和胎儿畸形情况。
SERC(+) MII卵母细胞的受精率和着床率显著低于SERC(-) MII卵母细胞。在移植源自SERC(+)卵母细胞的新鲜和玻璃化胚胎后,14例妊娠分娩出14名健康婴儿,其中2例来自新鲜胚胎移植(ET),12例来自玻璃化复苏ET,无畸形。
在SERC(+)周期内,MII卵母细胞中SERC的存在与受精率和着床率显著低于SERC(-) MII卵母细胞有关。然而,SERC对植入后发育以及新生儿结局没有影响。