Clinical and Experimental Reproductive Medicine

The Korean Society for Reproductive Medicine (대한생식의학회)
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Embryonic Developmental Capacity and Pregnancy Rates of Fertilized Oocytes in IVF, ICSI and TESE-ICSI Cycles

IVF, ICSI 또는 TESE-ICSI에서 수정을 유도한 난자의 배아 발생능력 및 임신율

  • Park, Kee-Sang (Department of OB/Gyn, Kyungpook National University Hospital) ;
  • Park, Yoon-Kyu (Department of Urology, Kyungpook National University Hospital) ;
  • Song, Hai-Bum (Division of Life Resources, Daegu University) ;
  • Lee, Taek-Hoo (Department of OB/Gyn, Kyungpook National University Hospital) ;
  • Chun, Sang-Sik (Department of OB/Gyn, Kyungpook National University Hospital)
  • 박기상 (경북대학교병원 산부인과) ;
  • 박윤규 (경북대학교병원 비뇨기과) ;
  • 송해범 (대구대학교 생명자원학부) ;
  • 이택후 (경북대학교병원 산부인과) ;
  • 전상식 (경북대학교병원 산부인과)
  • Published : 2004.09.30
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Abstract

Objective: This study was performed to evaluate and compare the embryonic developmental capacity and pregnancy rates in conventional in vitro fertilization (IVF) and intracytoplasmic sperm injection (ICSI) with ejaculated sperm or testicular sperm cycles. Materials and Methods: Fertilization was examined in the following morning after IVF (group I), ICSI (group II) or TESE-ICSI cycles (group III). Fertilized oocytes were co-cultured with Vero cells until embryo transfer (ET). On day 2 and $5{\sim}7$, grades of embryos (<4- or $\geq$4-cell) and blastocysts (BG1, 2, 3 or early) were evaluated. Clinical pregnancy rate was determined by detecting G-sac with transvaginal ultrasonogram. We analyzed the results by $X^2$ and Student's t-test and considered statistically significant when P value was less than 0.05. Results: Fertilization rate was significantly higher (p<0.05) in group I ($79.0{\pm}21.2%$) than in group II and III ($56.8{\pm}21.6%$ and $36.7{\pm}25.3%$). Cleavage and blastulation rate of group I ($95.8{\pm}13.8%$ and $59.5{\pm}25.3%$) were significantly higher (p<0.05) than those of group III ($83.4{\pm}18.6%$ and $40.4{\pm}36.5%$). Clinical pregnancy rate was significantly higher (p<0.05) in group I and II (40.7% and 41.7%) than that in group III (12.5%). No differences were found in the rates of multiple pregnancy and abortion among three groups. Embryonic implantation rate was higher in group I ($15.1{\pm}20.2%$, p<0.05) and II ($14.7{\pm}20.6%$, NS) than that in group III ($5.1{\pm}15.6%$). However, embryonic implantation rate was increased in ET with blastocyst(s) among three groups. Conclusions: Fertilized oocytes obtained from TESE-ICSI were harder to be successfully cultured to blastocyst stage for 5$\sim$7 days than that from IVF cycles. However, all blastocyst(s) ET increased the embryonic implantation rate equally in IVF, ICSI and TESE-ICSI cycles.

Keywords

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