Effects of Reactive Oxygen Species on the Function of Porcine Spermatozoa

활성산소계가 돼지 정자의 기능에 미치는 영향

  • Kim, Byung-Gak (Department of Animal Science & Technology, Chung-Ang University) ;
  • Kim, Ki-Jung (Department of Animal Science & Technology, Chung-Ang University) ;
  • Lee, Yong-An (Department of Animal Science & Technology, Chung-Ang University) ;
  • Kim, Bang-Jin (Department of Animal Science & Technology, Chung-Ang University) ;
  • Kim, Yong-Hee (Department of Animal Science & Technology, Chung-Ang University) ;
  • Ryu, Buom-Yong (Department of Animal Science & Technology, Chung-Ang University)
  • 김병각 (중앙대학교 동물자원과학과) ;
  • 김기중 (중앙대학교 동물자원과학과) ;
  • 이용안 (중앙대학교 동물자원과학과) ;
  • 김방진 (중앙대학교 동물자원과학과) ;
  • 김용희 (중앙대학교 동물자원과학과) ;
  • 류범용 (중앙대학교 동물자원과학과)
  • Published : 2009.03.31

Abstract

The current study was designed to evaluate the effects of the reactive oxygen species (ROS) generated with a xanthine (X) and xanthine oxidase system (XO) on sperm function and DNA fragmentation in porcine spermatozoa. ROS were produced by a combination of $1,000{\mu}M$ X and 50 mU/ml XO. The ROS scavengers such as superoxide dismutase (SOD) (200 U/ml) and catalase (CAT) (500 U/ml) were also tested. Spermatozoa were incubated for 2 hours in BWW medium with a combination of X-XO supplemented with or without antioxidants at $37^{\circ}C$ under 5% $CO_2$ incubator. Ca-ionophore-induced acrosome reaction, the proportion of swollen spermatozoa under hypo-osmotic condition, malondialdehyde formation for the analysis of lipid peroxidation, and the proportion of DNA fragmentation were determined after 2 hours incubation. The action of ROS on porcine spermatozoa resulted in decreased Ca-ionophore-induced acrosome reaction and membrane integrity, increased the formation of malondialdehyde, and the proportion of sperm with DNA fragmentation(p<0.05). The toxic effects caused by ROS were completely alleviated by CAT in terms of sperm function and characteristics, however SOD did not serve the same scavenger effect as CAT. To conclude, the ROS can cause significant damage to porcine sperm functions and characteristics, which can be minimized by the use of antioxidants.

Keywords

References

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