Journal of Embryo Transfer (한국수정란이식학회지)

The Korean Society of Embryo Transfer (한국수정란이식학회)
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Effect of Kinetin on In Vitro Development of Parthenogenetic Porcine Oocytes Exposed to Demecolcine Prior to Activation

  • Kim, Ki-Young (Laboratory of Embryo Biotechnology and Cellular Reprogramming, Dental Research Institute and BK2I CLS, Seoul National University School of Dentistry) ;
  • Park, Sang-Kyu (Laboratory of Embryo Biotechnology and Cellular Reprogramming, Dental Research Institute and BK2I CLS, Seoul National University School of Dentistry) ;
  • Roh, Sang-Ho (Laboratory of Embryo Biotechnology and Cellular Reprogramming, Dental Research Institute and BK2I CLS, Seoul National University School of Dentistry)
  • Published : 2009.06.30
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Abstract

This study was designed to investigate the effect of kinetin on in vitro development of parthenogenetic porcine oocytes exposed to demecolcine prior to activation. In vitro matured metaphase II stage oocytes were incubated in 0 or 2 ${\mu}$g/ml demecolcine supplemented defined culture medium for 3 h and the oocytes were activated electrically. The parthenogenetic porcine embryos were then cultured in 0 or 200 ${\mu}$M kinetin supplemented defined culture medium for 7 days. Regardless of demecolcine treatment, kinetin supplementation increased blastocyst rates significantly (7.0% versus 12.1% and 4.9% versus 8.5%; Control versus Kinetin and Demecolcine versus Kinetin + Demecolcine, respectively, p<0.05). Demecolcine treatment before activation tended to decrease blastocyst rates regardless of kinetin supplementation although it is not statistically significant. Total cell numbers in the blastocysts also tended to be elevated in embryos when supplemented with kinetin, however only the result between Kinetin and Demecolcine groups is statistically significant (37.6 ${\times}$ 7.2 versus 28.1 ${\times}$ 9.5, respectively, p<0.05). In conclusion, the present report shows that kinetin enhances developmental competence of parthenogenetic porcine embryo regardless of demecolcine pre-treatment before parthenogenetic activation when they were developed in defined culture condition.

Keywords

References

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