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논문 상세정보

초록

강원 북부연안에 많이 서식하는 명주조개 (C. antiquafa)를 대상으로 중장선의 미크로좀을 in vitro로 유기주석화합물 (TBTO, TBTC, TPTC)과 배양하여 약물대사효소계의 cytochrome P450 (CYP)과 7-ethoxyresorufin-O-deethylase (EROD)의 변화를 조사하였다. 그 결과, 이들 화합물은 모두 명주조개의 약물대사효소계를 짧은 시간 내에 저해한다는 것을 확인하였다. 즉,미크로좀을 0.4 mM 농도의 TBTC, TBTO 및 TPTC와 20분간 배양한 후의 CYP 함량은 첨가하기 전에 비해 각각 $52\%$, $72\%$$40\%$로 줄었는데, 이것으로 화합물의 종류에 따라서 저해 정도는 차이가 있었고 butyltin화합물보다는 phenyltin화합물의 저해 정도가 더 컸다. 그리고 EROD 활성의 경우도 0.4 mM의 TBTC, TBTO 및 TPTC와 20분 간 배양하였더니 각각 $100\%$, $92\%$$85\%$로 butyltin 화합물보다 는 phenyltin 화합물의 저해가 더 컸다. 한편, TBTC, TBTO 및 TPTC 모두는 패류 중장선의 CYP와 EROD 활성을 농도의존적으로 저해하였으며, 그리고 두 효소는 모두 오염물질에 노출된 패류의 좋은 생체지표 (bioindicator)로 활용할 수 있을 것이라 여겨진다.

Abstract

This study was carried out to measure the in vitro interaction of trialkyltin with the microsomal monooxygenase (MFO) system of the clam, Coelomactra antiquata. Cytochrome P450 (CYP) level and 7-ethonvesorufin-O-deethylase (EROD) activity were invetigated in the microsome isolated from digestive gland of the clam (C. antiquata) exposed to tributyltin chloride (TBTC), bis-tributyltinoxide (TBTO) and triphenyltin chloride (TPTC). The specific contents of CYP in clam microsome exposedto 0.4 mM TBTC, TBTO and TPTC for 20 minutes were decreased 52, 72 and $40\%$, respectively, compared to control group. The EROD activities also were inhibited by exposure to TBTO ($92\%$) and TPTC ($85\%$) except for TBTC, The level of CYP and the EROD actintles were decreased according to the OTC exposure concentrations. The toxic effects on the level of CYP and the EROD activities were in order of TPTC>TBTC>TBTO in this study. The measurement of CYP level and EROD activity could be applied as a biomarker for environmental study.

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이 논문을 인용한 문헌 (3)

  1. 2003. "Effects of Tributyltin in vitro on Hepatic Monooxygenase System in Marine Fishes" 환경생물 = Korean journal of environmental biology, 21(1): 18~25 
  2. 2003. "In vitro Response of Cytochrome P450 (CYP) and EROD Activity in Bivalve (Coelomactra antiquata) by DDT, PCB-153 and TCDD" 환경생물 = Korean journal of environmental biology, 21(2): 170~176 
  3. 2004. "In vitro and in vivo Responses of MFO Systems in Olive Flounder (Paralichthys olivaceus) Exposed to TBT and TPT for Short-term Period" 환경생물 = Korean journal of environmental biology, 22(1): 177~183 

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