Korean Journal of Fisheries and Aquatic Sciences (한국수산과학회지)

The Korean Society of Fisheries and Aquatic Science (한국수산과학회)
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In vitro Response of the MPO System of the Clam, Coelomactra antiquata with Exposure to Cytochrome P450 Inducers

Cytochrome P450 유도제에 노출시킨 명주조개 (Coelomactra antiquata) 약물대사효소계의 in vitro 반응

  • 전중균 (강릉대학교 해양생명공학부/동해안해양생물자원연구센터(EMBRC)) ;
  • 이미희 (강릉대학교 해양생명공학부/동해안해양생물자원연구센터(EMBRC)) ;
  • 심원준 (한국해양연구원 해양환경기후연구본부) ;
  • 이수형 (한국해양연구원 해양환경기후연구본부)
  • Published : 2002.03.01
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Abstract

Induction of cytochrome P45O (CYP) and 7-etholqresorufin-O-deethylase (EROD) in the microsome exposed to 3-methylcholan-throne (MC), $\beta$-naphthoflavone (BNF) and phenobarbital-Na (PB) was investigated, Microsome was isolated from digestive gland of clam (Coelomactra antiquata) and then exposed to each chemical in concentration range of 0.1 to 1.0 mM for 7 hours. The CYP content and EROD activity in the microsome exposed to each chemical significantly increased compared to the control group. The overall CYP and EROD induction potency was in order of MC>BNF>PB. The induction response of EROD was two times higher than that of CYP level in the microsome exposed to MC, but the induction response of EROD was slightly higher than that of CYP level in BNF and PB exposure groups.

강원 북부 연안에 많은 명주조개 (Coelomactra antiquata)의 중장선으로 미크로좀을 만들고, cytochrome P45O (CYP)의 유도제로 알려진 phenobarbital (PB), 3-methylcholanthrene (MC) 및 $\beta$-naphthoflavone (BNF)을 DMSO에 녹여 함께 30$^{\circ}C$의 수조 상에서 in vitro로 배양하면서 약물대사효소계의 CYP 함량과 7-othoxyresorufin-O-deethylase (EROD) 활성의 변화를 경시적으로 조사하였다. 그리고 비교를 위한 sham구는 미크로좀에 DMSO만을 첨가하여 같은 조건으로 배양하였다. 그 결과, sham구의 CYP 함량은 배양 6시간이 지나서는 처음 수준의 $91\%$로 줄었으며, 0.1 mM과 0.2mM, 0.4mM 및 1.0 mM BNF 배양구는 배양 4$\~$6시간 후에 최대값이 되었는데 각각 처음 보다 $116\%$, $114\%$, $126\%$ 및 $132\%$로 되었다. PB와의 배양에서는 0.1 mM과 0.4 mM 및 1.0 mM 배양구는 배양 4$\~$6시간 후에 최대 값이 되었고 각각 처음의 $112\%$, $114\%$ 및 $114\%$로 되었으며, MC와의 배양에서도 0.1 mM과 0.4 mM 및 1.0 mM 배양구는 배양 4시간 후에 최대값이 되어 각각 $116\%$, $130\%$ 및 $132\%$로 증가하였다. 그리고 EROD 활성의 변화도 sham구는 배양 7시간 후에도 변화가 거의 없었으나, BNF의 0.1 mM과 0.4 mM 및 0.8 mM 배양구는 배양 7시간 후에 각각 처음의 $120\%$, $123\%$ 및 $115\%$로 되었고, PB의 0.1 mM과 1.0 mM 배양구는 배양 3시간 후에 최대로 되어 각각 $121\%$ 및 $136\%$로 증가하였으며, MC와의 배양에서는 0.1 mM과 0.4 mM 및 0.8 mM 배양구는 배양 5시간 후에 최대값이 되어 각각 $204\%$, $198\%$ 및 $191\%$로 증가하였다. 이처럼 BNF나 PB, MC는 명주조개에서도 미크로좀의 CYP 함량과 EROD 활성을 증가시키는 유도효과를 나타내었으며, 특히 MC에 의한 유도효과가 가장 강했고 BNF, PB의 순이었고, 대체로 약물의 농도가 높을수록 유도 효과도 큰 경향을 보였다.

Keywords

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