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크롬 노출에 따른 숭어, Mugil cephalus의 혈액성분 변화

Changes of Hematological Constituents in the Mullet, Mugil cephalus Exposed to Chromium

  • 안태영 (경기도해양수산자원연구소) ;
  • 정달상 (한국농수산대학) ;
  • 김준환 (부경대학교 수산생명의학과) ;
  • 강주찬 (부경대학교 수산생명의학과)
  • Ahn, Tae-Young (Gyeonggi Province Maritime & Fisheries Research Institute) ;
  • Jeong, Dal Sang (Korea National College of Agriculture and Fisheries) ;
  • Kim, Jun-Hwan (Department of Aquatic Life Medicine, Pukyong National University) ;
  • Kang, Ju-Chan (Department of Aquatic Life Medicine, Pukyong National University)
  • 투고 : 2013.05.06
  • 심사 : 2013.08.07
  • 발행 : 2013.08.30

초록

크롬은 여러 산업으로 배출되어 수 환경을 오염시키는 주요 중금속 중 하나이며, 특히 Cr(VI)은 수용액 내에서 주로 크롬산 이온으로 존재하며, 생체막을 쉽게 통과하여 산화 스트레스 및 생체 축적을 일으킨다. 따라서 본 연구는 숭어를 대상으로 그들의 혈액성분의 변동에 미치는 크롬의 영향을 검토하였다. RBC count 및 Ht 값은 $50{\mu}g/L$ Cr 농도에서 유의적인 감소를 나타냈으나, Hb 농도의 유의한 변동은 관찰되지 않았다. 혈청 칼슘농도는 $50{\mu}g/L$ Cr의 농도에서 유의적인 감소를 보였고, 마그네슘농도는 $100{\mu}g/L$ Cr의 농도에서 유의적인 증가를 보였다. Glucose 및 total protein 농도는 가장 높은 크롬농도인 $200{\mu}g/L$ Cr에서 유의적인 증가를 보였으나, 중성지방인 triglyceride 농도는 노출기간 동안 유의한 변화가 관찰되지 않았다. GOT 및 GPT 활성은 $100{\mu}g/L$ Cr 이상의 농도에서 유의적인 증가를 보였고, ALP활성은 가장 높은 크롬농도인 $200{\mu}g/L$ Cr에서 유의적인 증가를 보였다. 이상의 결과는 숭어의 혈액성상과 혈청 무기성분은 크롬 농도 $50{\mu}g/L$ 이상, 혈청유기성분과 효소성분은 크롬농도 $100{\mu}g/L$이상에서 변동이 나타나는 것으로 결론 내릴 수 있다.

The study was carried out to investigate the changes of hematological parameters induced by waterborne exposure of chromium (Cr) in the mullet, Mugil cephalus. The mullet was exposed to sub-chronic concentrations of chromium (0, 25, 50, 100, $200{\mu}g/L$ Cr) for 4 weeks. The major hematological findings were significant decreases in the red blood cell (RBC) count and hematocrit value in mullet exposed to ${\geq}50{\mu}g/L$ Cr. Although serum calcium concentration was significantly reduced at ${\geq}50{\mu}g/L$ Cr, magnesium concentration was found to be significantly increased at ${\geq}100{\mu}g/L$ Cr. The serum glucose and total protein concentrations were significantly increased at $200{\mu}g/L$ Cr. However, serum triglyceride concentration did not show any noticeable changes in the range of $25{\sim}200{\mu}g/L$ Cr of chromium compared to control group during the experimental period. A significant increment of GOT (glutamic oxalate transminase) and GPT (glutamic pyruvate transminase) activities was noticed at ${\geq}100{\mu}g/L$ Cr. These results indicate that hematological and serum biochemical changes in the mullet by waterborne exposure to chromium are affected at more than $50{\mu}g/L$ Cr.

키워드

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