Developmental capacity and implantation potential of the embryos with multinucleated blastomeres

Akiyoshi Egashira, Nobuhiko Yamauchi, Keiko Tanaka, Chihiro Mine, Hitomi Otsubo, Masao Murakami, Md Rashedul Islam, Misako Ohtsuka, Naomi Yoshioka, Takashi Kuramoto

Research output: Contribution to journalArticlepeer-review

6 Citations (Scopus)


The presence of multinucleated blastomeres (MNBs) in embryos is associated with poor developmental competence in assisted reproductive technologies. This phenomenon is observed not only in humans but also in other animal species. The purpose of the present study was to investigate the characteristics of embryos with MNBs (MNB embryos) that could be utilized in embryo transfer. The developmental rate of MNB embryos to the blastocyst stage (50.8%) was significantly lower than that of normal embryos (73.3%) (P < 0.05). The clinical pregnancy rates of fresh embryo transfer (ET) using day 2 or day 3 embryos were significantly lower in MNB embryos (5.1%) compared with normal embryos (24.0%) (P < 0.05). In the case of frozen-thawed ET using a single vitrified/warmed blastocyst, however, the clinical pregnancy rate of MNB embryos was close to that of normal embryos (59.1% vs. 52.8%). Thus, the findings of the present study suggest that the frozen-thawed ET of MNB embryos might improve the potential for implantation followed by successful pregnancy.

Original languageEnglish
Pages (from-to)595-600
Number of pages6
JournalJournal of Reproduction and Development
Issue number6
Publication statusPublished - Dec 18 2015

All Science Journal Classification (ASJC) codes

  • Animal Science and Zoology


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