Reproductive and Developmental Biology

The Korean Society of Animal Reproduction (한국동물번식학회)
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Effects of Exposure to Vitrification Solution on Maturation, Fertilization and Development of Immature Porcine Oocytes In Vitro

유리화 동결액 노출이 돼지 미성숙 난포란의 성숙율, 수정율 및 배발달율에 미치는 영향

  • Choi I. K. (Daegu Mirae Women’s Hospital) ;
  • Seok S. H. (College of Natural Resources, Daegu University) ;
  • Kim K. S. (Dheonan Yonam College) ;
  • Song H. B. (College of Natural Resources, Daegu University)
  • Published : 2004.09.01
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Abstract

This study was conducted to investigate the toxi-cological effects of different vitrification solution on development of immature porcine oocytes in vitro. Oocytes were exposed to EFS solution [40% ethylene glycol (EG) + 18% Ficoll + 0.3M sucrose], ES solution (5.5M EG + 1.0M sucrose) or GE solution [10% glycol (G) + 20% EG], and these oocytes were transferred to sucrose solution directly. Maturation rates were significantly (P<0.05) higher in the ES solution (44.5%) and control (57.6%) than in the EFS solution (38.8%) and GE solution (22.4%). No differences among three solution were found in fertilization rates. Cleavage rates was significantly (P<0.05) higher in the ES solution (47.1%) and control (65.9%) than in the EFS solution (21.9%) and GE solution (19.0%), but no difference among three solutions was found in the blastocyst formation rates. These results indicate that combination of EG and sucrose solutions had effects on development of immature porcine oocytes.

본 연구는 돼지 미성숙 난포란의 유리화 동결액에 노출시 독성과 삼투압 스트레스가 가장 적은 유리화 동결액을 조사하기 위하여 실시하였으며, 그 결과를 요약하면 다음과 같다. 미성숙 난포란을 EFS(40% ethylene glycol +18% ficoll +0.3 M sucrose) 용액, ES(5.5 M ethylene glycol +1.0 M sucrose) 용액, GE(10% glycerol +20% ethylene glycol) 용액에 각각 노출하고 대조구로 아무 처리하지 않은 난포란을 체외성숙하여 관찰한 체외성숙율은 ES 용액과 대조구 에서 EFS 용액과 GE 용액보다 유의적으로 높았으며(P<0.05), 유리화 동결액의 독성에 의한 난포란의 퇴화율은 대조구, ES 용액, EFS 용액, GE 용액 순으로 유의적으로 낮은 퇴화율을 나타내었다(P<0.05). 미성숙 난포란을 EFS 용액, ES용액, GE용액에 각각 노출하고 대조구로 아무 처리하지 않은 난포란을 체외성숙, 체외수정하여 관찰한 정상 수정율은 대조구가 세 종류의 유리화 동결액보다 유의적으로 높았고(P<0.05), 유리화 동결액 간에는 유의적인 차이가 없었다. 다정자 침입율과 난자당 침입한 평균 정자수는 모든 처리구간에 유의적인 차이가 없었다. 미성숙 난포란을 EFS 용액, ES 용액, GE 용액에 각각 노출하고 대조구로 아무 처리하지 않은 난포란을 체외성숙, 체외수정, 체외 배양하여 관찰한 수정 3 일째의 분할율은 ES 용액과 대조구가 EFS 용액과 GE 용액보다 유의적으로 높았으며(P<0.05), 수정 7일째의 배반포 형성율은 모든 처리구간에 유의적인 차이가 없었다. 배양기간 동안 나타난 퇴화율은 대조구가 세 가지 유리화 동결액에 비해 유의적으로 낮았고(P<0.05), ES 용액은 EFS 용액과 GE 용액보다 유의적으로 낮은 퇴화율을 나타내었다(P<0.05).

Keywords

References

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