Reproductive and Developmental Biology

  • 제30권1호
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  • Pages.35-40
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  • 2006
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  • 1738-2432(pISSN)
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  • 2288-0151(eISSN)
한국동물번식학회 (The Korean Society of Animal Reproduction)
권호 표지

배 발달단계와 Superoxide Dismutase가 Open Pulled Straw(OPS) 방법에 의해 동결-융해한 수정란의 생존성에 미치는 영향

Effects of Embryo Developmental Stage and Superoxide Dismutase on the Survival of Frozen-Thawed Porcine Embryos by Open Pulled Straw (OPS) Method

  • 이상영 (경상남도첨단양돈연구소 생명공학과) ;
  • 유재숙 (경상남도첨단양돈연구소 생명공학과) ;
  • 사수진 (강원대학교 동물생명과학대학) ;
  • 박춘근 (강원대학교 동물생명과학대학)
  • Lee Sang-Young (Biotechnology Division, Gyeongsangnam Province Advanced Swine Research Institute) ;
  • Yu Jae-Suck (Biotechnology Division, Gyeongsangnam Province Advanced Swine Research Institute) ;
  • Sa Soo-Jin (College of Animal Life Sciences, Kangwon National University) ;
  • Park Choon-Keun (College of Animal Life Sciences, Kangwon National University)
  • 발행 : 2006.03.01
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초록

본 연구는 OPS 기법에 의한 돼지 수정란의 동결-융해 시 수정란의 발달 단계와 superoxide dismutase (SOD)가 수정란의 생존능력에 미치는 영향을 검토하였다. 돼지 체외수정 배반포는 OPS방법에 의해 동결 후 융해하여 $0{\sim}10units/ml$의 SOD 존재 하에 48시간 체외배양하였다. 동결-융해 후 형태학적으로 정상적인 수정란의 비율은 초기, 중기 및 확장배반포간에 유의적인 차이는 인정되지 않았다$(30.8{\sim}38.6%)$. 그러나 발육단계가 높을수록 형태적으로 정상인 수정란의 비율이 높은 경향을 나타냈다. 수정란의 융해 후 48시간 추가 배양했을 때, 발육이 진행된 수정란은 후기배반포기에 동결한 수정란이 38.7%로 유의적으로 높았으며(P<0.05), 1 unit/ml의 SOD를 첨가한 경우 비교적 높은 생존율을 나타내었다. 본 연구의 결과로부터, 수정란의 OPS방법에 의한 동결-융해 후 생존성의 향상을 위해서는 후기배반포기 단계에 동결하는 것이 유리하며, SOD의 첨가는 수정란의 손상을 어느 정도 방지할 수 있을 것으로 사료된다.

This study was performed to investigate the effects of embryo developmental stage and superoxide dismutase (SOD) on the survival of frozen-thawed porcine embryos by open pulled straw(OPS) method. Porcine IVF blastocysts were frozen-thawed by OPS method and cultured for 48 h under the existence of SOD. There are no significant differences in the proportions of normal morphology among the early, mid- and expanded blastoryst stages $(30.8{\sim}38.6%)$. After culture of embryos, the developmental rates to the expanded blastocyst stage(38.7%) were significantly higher than those of other stages (P<0.05). The proportions of expanded and hatched embryos were higher in medium with 1 unit/ml SOD than 0 and 10 units/ml of SOD. The result indicates that OPS method can use for the pig embryo cryopreservation, especially for the late stage blastocysts. SOD may can reduce the demage of frozen-thawed porcine embryos.

키워드

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