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Abstract AI-Helper 아이콘AI-Helper

The objective of this study was to evaluate the efficiency of sperm cryosurvival in boar sperm separated by Percoll containing antioxidant enzymes. The boar semen was collected into a pre-warmed ($37^{\circ}C$) thermos bottle by gloved-hand method and was separated by 65% Percoll with sup...

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문제 정의

  • 하지만 Percoll 분리는 고품질의 정자를 선별할 수 있지만, 분리과정 중 정장액이 분리되어 정자가 활성 산소에 쉽게 노출된다는 단점(Ahmad 등, 2010)이 있기 때문에 Percoll에 의해 분리된 고품질 정자가 동결되는 동안 발생하는 활성 산소를 감소시켜, 융해 후 성상을 증진시킬 수 있는 항산화제를 첨가하여 고품질의 동결정액을 생산하는 기술이 필요하다고 판단된다. 따라서 본 연구에서는 고품질 정자의 동결 효율을 높이기 위해 SOD, CAT 및 GSH와 같은 항산화 효소가 첨가된 Percoll을 이용하여 돼지 정액을 분리한 후, 동결-융해 후 돼지 정자의 성상을 평가하였다.
본문요약 정보가 도움이 되었나요?

질의응답

핵심어 질문 논문에서 추출한 답변
정액의 동결 보존은 어떠한 특징을 가지고 있는 기술인가? 정액의 동결 보존은 정자를 초저온에서 보관하는 기술로, 반영구적인 보관이 가능하여 우수한 형질의 유전자원을 보존할 수 있는 특징을 가지고 있다. 이러한 장점으로 멸종위기동물의 유전자원 보존과 가축의 개량 및 생산성 향상에 크게영향을 미쳤다(Sieme와 Oldenhof, 2015).
정액의 동결과정 중 다양한 물리적, 화학적 스트레스에 노출되어 세포에서 생성되는 과도한 활성 산소는 정자에 어떤 영향을 미치는가?  특히 돼지 정자는 다른 종에 비해 세포막 내 다중불포화지방산의 농도가 높기 때문에 산화적 충격에 더 민감하다(Strzezek 등, 2004). 이러한 활성 산소는 정자의 생존율과 운동성의 감소, 세포막 손상 및 DNA 손상에 영향을 미치게 되어, 최종적으로 정자의 수정능력을 감소시키게 된다(Knox 등, 2015).
돼지 정자가 산화적 충격에 더 민감한 이유는?  동결과정 중 다양한물리적, 화학적 스트레스에 노출되어 세포에서 생성되는 과도한 활성 산소 종에 의해 정자가 손상을 받게 된다(Santiani 등, 2014). 특히 돼지 정자는 다른 종에 비해 세포막 내 다중불포화지방산의 농도가 높기 때문에 산화적 충격에 더 민감하다(Strzezek 등, 2004). 이러한 활성 산소는 정자의 생존율과 운동성의 감소, 세포막 손상 및 DNA 손상에 영향을 미치게 되어, 최종적으로 정자의 수정능력을 감소시키게 된다(Knox 등, 2015).
질의응답 정보가 도움이 되었나요?

참고문헌 (50)

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