Environmental Analysis Health and Toxicology

The Korean Society of Environmental Health and Toxicology (환경독성보건학회)
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Combination Effect of Bisphenol A and Nonylphenol to Japanese Medaka (Oryzias latipes)

일본산 송사리 (Oryzias latipes)에 대한 Bisphenol A와 Nonylphenol의 혼합효과

  • Seo, Jin-Won (Korea Institute of Water and Environment, Korea Water Resources Corporation) ;
  • Kim, Woo-Keun (Ecotoxicology Research Team, Korea Institute of Toxicology) ;
  • Lee, Sung-Kyu (Ecotoxicology Research Team, Korea Institute of Toxicology)
  • 서진원 (한국수자원공사 수자원연구원 수자원환경연구소) ;
  • 김우근 (안전성평가연구소 환경독성시험연구부) ;
  • 이성규 (안전성평가연구소 환경독성시험연구부)
  • Published : 2007.09.30
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Abstract

생활하수, 공장폐수, 농경유출수에 의해 수생태계로 유입된 다양한 화학물질들은 수서곤충이나 어류와 같은 수생생물에게 나쁜 영향을 주곤 한다. 비스페놀A와 노닐페놀을 포함하는 많은 화학물질들이 내분비계 장애물질(EDCs)로 의심되고 있고, 그들은 환경속에서 서로 다른 혼합형태로 공존하기도 한다. 따라서 비스페놀A와 노닐페놀의 혼합물이 독성과 생식학적 반응에 미치는 영향을 살펴보기 위해 일본산 송사리의 수정란 치사율, 부화율 및 부화시간, 치어의 성장율 및 비텔로제닌 농도 등이 측정되었다. 수정된 지 24시간 이내의 수정란을 대조군, 양성대조군($17{\beta}-estradiol$), 그리고 서로 다른 농도의 비스페놀A와 노닐페놀의 혼합물에 부화 후 60일까지 유수식 조건하에 노출시켰다. 수정란${\sim}$치자어 단계에서는 대조군과 비교하여 실험군의 치사율 및 부화율, 부화시간에 차이가 나타나지 않았으며, 부화 후 60일간의 노출 후 성장(길이, 무게)에 있어서도 비록 양성대조군에서 낮은 성장상태를 보였지만 다른 혼합물의 실험군들과는 차이를 보이지 않았다. 한편 체내 비텔로제닌 농도는 혼합물의 농도증가에 따라 증가하였으며 수컷의 경우 최저농도의 혼합물(Treatment A)을 제외한 실험군에서 농도증가에 따라 증가하였다. 반면 양성대조군의 경우 수컷이 발견되지 않았고 암컷 체내의 비텔로제닌 농도는 최고농도의 혼합물(Treatment D) 실험군과 비슷한 경향을 보였다. 위 실험을 통해 각각의 내분비계 장애물질이 개별적으론 생식발달 및 비텔로제닌 유도에 무영향농도(NOEC)라 하더라도 혼합된 경우 영향이 나타날 수 있다는 것을 보여주었으며, 이는 수환경 내 다양한 화학물들의 혼합효과(combination effect)가 생태위해성평가를 좀더 면밀하게 하기 위해서 주의 깊게 고려되어야 한다고 제안한다.

Keywords

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