Korean Journal of Environmental Biology (환경생물)

Korean Society of Environmental Biology (한국환경생물학회)
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Synergistic Effects of Ionizing Radiation and Mercury Chloride on Cell Viability in Fish Hepatoma Cells

이온화 방사선 및 염화수은 처리에 따른 어류 간암세포의 생존능 평가

  • Han, Min (Korea Atomic Energy Research Institute, Advanced Radiation Technology Institute) ;
  • Hyun, Kyung-Man (Korea Atomic Energy Research Institute, Advanced Radiation Technology Institute) ;
  • Nili, Mohammad (Dawnesh Radiation Research Institute) ;
  • Hwang, In-Young (Department of Environmental Science and Engineering, Inje University) ;
  • Kim, Jin-Kyu (Korea Atomic Energy Research Institute, Advanced Radiation Technology Institute)
  • 한민 (한국원자력연구원 방사선과학연구소) ;
  • 현경만 (한국원자력연구원 방사선과학연구소) ;
  • 모하마드닐리 (도네쉬방사선연구소) ;
  • 황인영 (인제대학교 환경공학부) ;
  • 김진규 (한국원자력연구원 방사선과학연구소)
  • Received : 2009.02.26
  • Accepted : 2009.03.12
  • Published : 2009.05.31
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Abstract

All organisms are being exposed to harmful factors present in the environmental. The combined action of various factors is a distinguishing feature of modern life. An interaction between two chemicals is considered as synergistic when the effect produced is greater than the sum of the two single responses. The biological effects due to the combined action of ionizing radiation with the other factor are hard to estimate and predict in advance. In the current study, we investigated the synergistic effects between ionizing and $HgCl_2$ using fish hepatoma cells (PLHC-1 cells). The results showed a dramatic decrease of cell viability after simultaneous treatment of PLHC-1 cells with ionizing radiation and $HgCl_2$. Neiither of the two had any cytotoxic effect when treated alone. The cytotoxicity of ionizing radiation was enhanced in the presence of $HgCl_2$. The synergistic effects were observed after exposure of the PLHC-1 cells to ionizing radiation combined with $HgCl_2$. The synergistic interaction was due to an increase of irreversibly damaged cells after the combined exposure. Analysis of the extent of synergistic interaction enables to make quantitative estimation of irreversibly damaged cells after the combined exposure. The present study suggests that PLHC-1 cells can serve as rapid screening tools for detecting the toxicity of harmful factors.

Keywords

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