Effects of Development and Viability of Pig Oocytes Matured in Defined Medium Containing PVA, PVP and pFF

PVA, PVP 및 pFF를 첨가한 체외성숙 한정배지가 미성숙 돼지 난포란의 성숙과 배발달에 미치는 영향

  • 김인덕 (단국대학교 생명자원과학대학 동물자원학과) ;
  • 김세나 (단국대학교 생명자원과학대학 동물자원학과) ;
  • 한숙기 (단국대학교 생명자원과학대학 동물자원학과) ;
  • 석호봉 (단국대학교 생명자원과학대학 동물자원학과)
  • Published : 2004.12.01

Abstract

This study was conducted to develop a serum-free, defined medium of IVM of pig oocytes. The TCM-199 with supplemented with polyvinylalcohol(PVA), polyvinylpyrrollidone(PVP) and porcine follicular fluid(pFF) were used as basal medium. The effects of the these additives on the rates of maturity and development under in-vitro fertilization and in vitro culture were examined and subsequently considered on the possibilities be sustituted for the bovine serum albumin(BSA). Maturation rate of pig oocytes in IVM media containing PVA(82.4%), pFF(89.4%) and BSA(90.0%) were significantly higher(P<0.05) than that of PVP(78.6%). Cleavage rate after IVF of PVP(64%) was significantly lower(P<0.05) than these of PVA(73%), pFF(77%) and BSA(73%) supplements. in vitro development rates to morulae and blastocyst on PVP(54%) were also significantly lower(P<0.05) than these of the supplements of PVA(63%), pFF(69%) and BSA(65%). In comparison of maturation and fertilization rates of pig oocytes in each supplements, the maturity rates of PVA(82.4%), pFF(89.4%) and BSA(90.0%) were significantly lower(P<0.05) than that of PVP(72.4%) and while, the fertilization rates of pFF(87.1%) and BSA(89.1%) were significantly higher(P<0.05) than these of PVA(78.0%) and PVP(70.6%). It may be concluded that PVA and pFF can be substituted far BSA in medium for culturing pig oocytes; however, it may be considered that PVP were limited to for BSA in the in vitro culture of the embryos.

본 연구는 체외 성숙액인 TCM-199 배지를 기초로 무혈청첨가물인 PVA, PVP 및 pFF의 한정배지를 이용하여 돼지 미성숙난자의 체외성숙, 수정 및 배양 후 난자의 수정율과 배발달에 미치는 영향과 나아가 BSA 대체물로서의 이용 가능성을 알아보았다. 1. 무혈청 첨가물을 이용하여 난포란의 체외 성숙을 유기한 결과 PVA, PVP, pFF, BSA의 전체 분할율은 각각 82.4%, 78.6%, 89.4%, 90.0%로 나타났으며, GV, MI-MII율은 PVA 첨가시 각각 15.1%, 84.9%, PVP는 각각 26.5%, 73.5%, pFF는 각각 11.8%, 88.2%, BSA는 각각 11.1%, 88.9%로 PVA 혹은 pFF 첨가시에는 모두 BSA와 유사한 결과를 보였으나 PVP와는 유의적인 차이를 나타내었다 (P<0.05). 2. 체외 성숙된 난자를 수정시킨 후의 배발달율을 확인한 결과 전체 난할율은 PVA가 73%, PVP는 64.1% , pFF가 77.2%, BSA가 73%로 PVA와 pFF는 BSA와 유사하게 나타났으나, PVP는 그 발달율이 다른 처리군 들과 비교하여 유의적(P<0.05)으로 낮은 결과를 보였다. 3. 각 처리구간의 morulae와 blastocyst의 합을 비교한 결과 체외성숙 첨가물 중 PVA와 pFF는 각각 63%, 69%로 BSA(65%)와 유사한 결과를 나타내었으나 PVP는 54%로 유의적으로 낮은 결과를 나타내었다(P<0.05). 4. 전체 성숙율과 수정율을 비교해 본 결과 성숙 율은 PVA, pFF, BSA가 82.4%, 89.4%, 90.0%인 반면 PVP는 72.4%로 유의적으로(P<0.05) 낮은 결과를 보였고, 수정율은 pFF, BSA가 각각 87.1%, 89.1%로 PVA, PVP의 78.0%, 70.6%에 비해 각각 유의적(P<0.05)으로 높았다. 이상의 연구결과 돼지 난자의 체외성숙 및 배양 배지에 있어 PVA, pFF 첨가는 BSA 대체물로서 이용이 가능하나 PVP는 그 이용에 제한이 따를 것으로 판단된다.

Keywords

References

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