Reproductive and Developmental Biology

The Korean Society of Animal Reproduction (한국동물번식학회)
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Effects of Antioxidants on Porcine IVM/IVF Embryos

돼지 체외수정란의 체외발육에 있어 항산화제의 효과

  • 장현용 (강원대학교 동물자원과학대학) ;
  • 오진영 (강원대학교 동물자원과학대) ;
  • 김종택 (강원대학교 동물자원과학대) ;
  • 박춘근 (강원대학교 동물자원과학대) ;
  • 정희태 (강원대학교 동물자원과학대) ;
  • 김정익 (강원대학교 동물자원과학대) ;
  • 이학교 (한경대학교 생명공학) ;
  • 최강덕 (한경대학교 생물정보통신전문대) ;
  • 양부근 (강원대학교 동물자원과학대학)
  • Published : 2004.06.01
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Abstract

The purpose of this study was performed to establish the in vitro culture system of porcine in vitro maturation and in vitro fertilization(IVM/IVF) embryo. These studies was to determine the effects of antioxidants(aesculetin, taurine and melatonin) in porcine IVM/IVF embryos. In routine porcine IVM/IVF procedure, oocytes were cultured for 40∼44h incubation in NCSU 23 mediumand matured oocytes were inseminated with frozen semen. Then 2 to 8 cell embryos were removed cumulus cell and were allotted randomly to NCSU 23 containing different concentration of antioxidants in 5% $O_2$ and 5% $CO_2$ at 38.5$^{\circ}C$. Cell numbers of blastocyst were also counted using double fluorescence stain method. Aesculetin were added to NCSU 23 medium at concentration of 1 ug, 5 ug, and 10 ug, when treated with 10 ug(35.7%) of aesucletin at the rate of embryos of the morula plus blatocsyts were higher than those of any other groups (30.2%, 29.5% and 29.2%)(P<0.05). The developmental rates beyond morula stage of porcine embryos in NCSU 23 medium supplemented with taurine 0, 2.5 and 5.0 mM were 26.1%, 26.9% and 31.7%, respectively. The addition of 5.0 mM taurine was higher the developmental rate beyond morula stage than in any other groups. In NCSU 23 medium treated with melatonin 0, 1, 5 and 10 nM, the developmental rate of morula plus blastocysts were 33.3%, 39.1%, 33.3% and 27.9%, respectively. The developmental rate of morula and blascytocys treated with 1nM melatonin was higher than in any other groups(P<0.05). Cell numbers of blastocyst in NCSU 23 treated with melatonin 0, 1, 5 and 10nM were 41.0, 42.6, 39.6 and 33.0, respectively. These results indicate that aesculetin, taurine and melation can increase the developmental rate beyond the morulae and blastocysts in porcine embryos.

5% $CO^2와 5% O^2$ 농도 조건 하에서 NCSU23 배양액에 aesculetin을 0, 1, 5 및 10 $\mug/ml$를 첨가한 구에서 상실배기 이상 발육된 체외배양 성적은 10 $\mu$ g 첨가구(35.7%)가 여타구(0 $\mu$g, 30.2% ; 1$\mu$g, 29.5% ; 5$\mu$g, 29.2%)보다 통계적으로 유의하게 높은 성적을 얻었다(P<0.05). NCSU 23 배양액에 taurine을 0, 2.5 및 5.0 mM을 첨가, 체외배양을 실시한 결과 배반포기 이상 발육된 체외발육 성적은 각각 2.8%, 2.2% 및 7.0%였으며, 상실배이상의 체외 발육성적은 26.1%, 26.9% 및 31.7%로서 taurine 5.0 mM 첨가가 체외수정란의 체외발육 성적이 유의적으로 높은 것으로 나타났다(P<0.05). NCSU 23 배앙액에 melatonin을 0, 1, 5 및 10nM을 첨가하여 체외배양을 실시한 결과, 배반포기까지 발육된 체외 발육성적은 17.8%, 26.1%, 20.0% 및 16.3%로서 melatonin 1nM 첨가구가 여타구에 비해 통계적으로 유의하게 높은 성적을 나타냈으며(P<0.05), 상실배기 이상 발육된 체외발육 성적에서는 melatonin 1nM 첨가구가 39.1%로서 대조구 33.3%, 5 nM 첨가구의 33.3% 및 10 nM 첨가구의 27.9%보다 높은 발육율을 나타냈다(P<0.05). 한편 배반포기 수정란의 세포수 조사에서는 melatonin 10 mM 첨가구가 유의하게 낮은 것으로 나타났다.

Keywords

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