Journal of International Reproductive Health/Family Planning ›› 2023, Vol. 42 ›› Issue (4): 272-276.doi: 10.12280/gjszjk.20230026

• Original Article • Previous Articles     Next Articles

The Effect of Poly-Pronucleus Incidence on Embryo Development and Pregnancy Outcome after ICSI

NI Dan-yu, YANG Ye, XIE Qi-jun, JIANG Wei, LING Xiu-feng()   

  1. Center of Reproductive Medicine, Women′s Hospital of Nanjing Medical University, Nanjing Maternity and Child Health Care Hospital, Nanjing 210004, China
  • Received:2023-01-29 Published:2023-07-15 Online:2023-07-26
  • Contact: LING Xiu-feng E-mail:lingxiufeng_njfy@163.com

Abstract:

Objective: To explore the impact of poly-pronucleus (PN) incidence on the embryonic development and pregnancy outcome after intracytoplasmic sperm injection (ICSI). Methods: This is a retrospective cohort study, analyzing the clinical data of patients after ICSI between January 2016 and December 2021. The objects of study were divided into three groups according to the proportion of poly-PN: the control group (the proportion of poly-PN=0%, n=333), the low-frequency poly-PN group (0%<the proportion of poly-PN<20%, n=80) and the high-frequency poly-PN group (the proportion of poly-PN≥20%, n=31). The embryonic development and pregnancy outcomes were compared among the groups, respectively. Results: The numbers of oocytes retrieved and available embryos on day 3 (D3) were higher in the low-frequency poly-PN group than those in the control group, but the rates of normal fertilization and high-scoring blastocyst formation were lower than those in the control group (all P<0.017). Compared with the control group and the low-frequency poly-PN group, the high-frequency poly-PN group had lower rate of normal fertilization rate, lower number of available embryos on D3 (all P<0.017), and low rate of biochemical pregnancy and high miscarriage rate (but P>0.017). Multifactorial Logistic analysis showed that patients in the high-frequency poly-PN group had significantly lower biochemical pregnancy rate and live birth rate when compared with the control group (aOR=0.402, 95%CI: 0.186-0.870, aP=0.021; aOR=0.247, 95%CI: 0.068-0.901, aP=0.034). Conclusions: In the ICSI cycles, the incidence of poly-PN may reflect oocyte quality, and the incidence of poly-PN≥20% may predict the poor embryo development, lower biochemical pregnancy rate and lower live birth rate.

Key words: Sperm injections, intracytoplasmic, Prokaryotic cells, Embryonic development, Pregnancy outcome