한국임상수의학회지 (Journal of Veterinary Clinics)

  • 제28권1호
  • /
  • Pages.13-19
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  • 2011
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  • 1598-298X(pISSN)
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  • 2384-0749(eISSN)
한국임상수의학회 (The Korean Society of Veterinary Clinics)
권호 표지

Catalase 첨가에 따른 돼지 정액 동결 및 융해 후 생존 정자에서 Hydrogen Peroxide의 감소

The Reduction of Hydrogen Peroxide in Viable Boar Sperm Cryopreserved in the Presence of Catalase

  • 김수희 (전북대학교 수의과대학) ;
  • 이영준 (전북대학교 수의과대학) ;
  • 강태운 (전북대학교 수의과대학) ;
  • 김용준 (전북대학교 수의과대학)
  • Kim, Su-Hee (Department of Veterinary Obstetrics and Theriogenology, College of Veterinary Medicine, Chonbuk National University) ;
  • Lee, Young-Jun (Department of Veterinary Obstetrics and Theriogenology, College of Veterinary Medicine, Chonbuk National University) ;
  • Kang, Tae-Woon (Department of Veterinary Obstetrics and Theriogenology, College of Veterinary Medicine, Chonbuk National University) ;
  • Kim, Yong-Jun (Department of Veterinary Obstetrics and Theriogenology, College of Veterinary Medicine, Chonbuk National University)
  • 심사 : 2011.02.16
  • 발행 : 2011.02.28
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초록

요 약: 정액 동결 과정은 활성산소종의 생성을 유발하며, 생성된 활성산소종은 정자의 손상을 일으키는 것으로 알려져 있다. 따라서 본 연구의 목적은 동결 과정 중 항산화 효소 중 하나인 catalase (CAT)를 첨가함으로써 융해 후 정자의 기능과 활성산소종의 수준에 미치는 효과를 알아보고자 하였다. 5마리 돼지에서 채취한 정액은 0 (대조군), 200, 400 U/mL CAT가 첨가되어 있는 동결 희석액으로 각각 동결하였다. 융해 후, 정자 운동성, 생존성, 정상 형태율, 형질막 온전성, 미토콘드리아 기능, 세포내 ROS를 평가하였다. CAT는 400 U/mL의 농도에서 전체 정자 운동성을 향상시켰지만 (P < 0.05), 전진 운동성, 생존성, 기형율, 형질막 온전성, 미토콘드리아 기능의 향상을 나타내지 않았다. 활성산소종의 평가에서, CAT는 융해된 생존 정자의 ${\cdot}O_2$의 감소에는 효과를 나타내지 않은 반면 $H_2O_2$를 감소시켰다(P < 0.05). 결론으로 CAT는 동결 및 융해된 정자의 질을 향상시키는 데 큰 효과를 나타내진 않았지만 생존 정자에서 $H_2O_2$을 제거함로써 생존정자의 산화적 손상을 감소시킬 수 있으리라 판단된다.

Semen cryopreservation induces the formation of reactive oxygen species (ROS), and the ROS cause sperm damage. We aimed to investigate the effects of the antioxidative enzyme catalase (CAT) on sperm quality and ROS during cryopreservation. Sperm rich fractions collected from five Duroc boars were cryopreserved in freezing extender with (200 or 400 U/mL) or without CAT (control). After thawing, sperm motility, viability, normal morphology, plasma membrane integrity, mitochondrial function and intracellular ROS were evaluated. CAT significantly improved total sperm motility at a concentration of 400 U/mL (P < 0.05), but didn't improve progressive sperm motility, viability, morphological defects, plasma membrane integrity and mitochondrial function in frozen-thawed boar sperm. In evaluation of ROS, CAT had no effect on reduction in ${\cdot}O_2$, but scavenged $H_2O_2$ in viable frozen-thawed boar sperm at concentrations of 200 and 400 U/mL (P < 0.05). In conclusion, CAT was not enough to improve quality of frozen-thawed sperm, but can reduce $H_2O_2$ generation in viable boar sperm during cryopreservation.

키워드

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