논문 상세보기
pp.15-20
본 연구에서는 OPU를 통한 체내 유래 난자를 이용한 수정란 생산 시 1개월에서 6개월까지의 연구 기간에 따른 난포 생성수, 난자 회수율, 난자 등급율, 배반포 생성률을 분석하여 공란우의 활용 기간에 관하여 조사하였다. 1. 채란 기간에 따른 난포 생성수는 1개월에서 5개월까지의 난포 생성수는 , , , , 개로 유의적인 차이가 없었으나, 6개월째에는개로 급격하게 줄어든 것을 알 수 있었다. 2. 채란 기간에 따른 난자 회수개수는 1개월에서 3개월까지는
This study was performed to identify the optimal timing for oocyte donor replacement during OPU procedure. OPU was carried out to collect oocytes from every donor at an interval of days (2 times a week). The collected oocytes were matured in vitro in TCM-199 supplemented with 10% FBS, 10 mg/ml of FSH and 1 mg/ml of estradiol for 24 h. After 24 h of exposure to sperm, the presumptive zygotes were cultured in CR1aa medium supplemented with 4 mg/ml of BSA for 3 days before being changed to CR1aa medium with 10% of FBS for another days. The mean numbers of retrieved oocytes were remained constantly up to 3 months (, , ), but significantly decreased at over 4 to 6 months (, , ) (p<0.05). The blastocyst development potential was also very similar rate from 1 to 3 months (37.2%, 40.4% and 44.6%), but significantly decreased from 4 to 6 months (24.8%, 29.3% and 28.6%, respectively) (p<0.05). The production of OPU derived embryos in periods of 1 to 3 months (, and ) were significantly higher than those in 4 to 6 months (, and , respectively) (p<0.05). In conclusion, the efficient periods for the production of OPU derived embryos was until 4 months, twice per week to produce over 64 transferable embryos and then replace new donor after 3 months use. The best replacement time is 3 months and could be maximized production of OPU derived embryos.
