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Volume 34 Issue 1
Jan.  2015
Article Contents

Citation:

Influence of single and combined cadmium and benzo(a)-pyrene on SOD, CAT activities and MDA content in the Polychaete Perinereis aibuhitensis

  • Received Date: 2014-03-21
    Accepted Date: 2014-07-07
  • In order to elucidate the effects of heavy metal and polyaromatic hydrocarbons (PAHs) on the antioxidant enzyme activity and lipid peroxidation in marine polychaetes, cadmium (Cd) and benzo (a) pyrene (B[a]P) were selected as the representatives of heavy metal and PAHs respectively and the responses of antioxidant enzyme activities and lipid peroxidation in the polychate Perinereis aibuhitensis were studied when exposed to Cd, B[a]P and their combined pollution. Results showed that under Cd single pollution stress, there were no obvious dose-effect relationships between Cd concentration and the superoxide dismutase (SOD) as well as catalase (CAT) activities in P. aibuhitensis, while malondialdehyde (MDA) content increased with increasing exposed concentrations. Under B[a]P single pollution stress, SOD, CAT activities and MDA content were all strongly correlated with waterborne B[a]P levels. Under combined pollution of Cd and B[a]P, SOD activity of P. aibuhitensis was induced in the lower exposed concentrations and inhibited in the higher exposed concentrations, CAT activity, however, was inhibited in the lower exposed concentrations then returned to control level in the higher exposed concentrations. Meanwhile, MDA content was significantly induced only in higher exposed concentration. The current study suggests that Cd can interfere the influence of B[a]P on oxidation system in polychaetes and the combined exposure of the two pollutants made an antagonistic effect.
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  • [1] 赵仕兰,赵 骞,袁秀堂,等.2009年辽东湾北部海域Pb和Cd的时空分布特征及其污染风险分析[J].海洋环境科学,2011,30(6):780-788.[2]张小华,钟立峰,苗 莉,等.粤东典型海湾表层沉积物Cd的分布及其潜在生态危害评价[J].热带海洋学报,2013,32(2):118-127.[3]丘耀文,周俊良, MASKAOUI K,等.大亚湾海域水体和沉积物中多环芳烃分布及其生态危害评价[J].热带海洋学报,2004,23(4):72-80.[4]林秀梅,刘文新,陈江麟,等.渤海表层沉积物中多环芳烃的分布与生态风险评价[J].环境科学学报,2005,25(1):70-75.[5]VARANAS U. Metabolism of polycyclic aromatic hydrocarbons in the aquatic environment [M]. Boca Raton, FL: CRC Press Inc,1989.[11]吴宝铃,孙瑞平,杨德渐.中国近海沙蚕科研究 [M].北京:海洋出版社,1981.[12]杨德渐,孙瑞平.中国近海多毛环节动物[M].北京:农业出版社,1988.[14]宋莹莹,袁秀堂,张升力,等.苯并(a)芘、镉单一及复合污染对双齿围沙蚕3刚节疣足幼体发育的影响[J].海洋环境科学,2011,30(3):333-336.[15]孙淑红,焦传珍,刘小林.Cd(Ⅱ)对泥鳅抗氧化酶活性和脂质过氧化的影响[J].大连水产学院学报,2009,24(1):52-56.
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    沈阳化工大学材料科学与工程学院 沈阳 110142

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Influence of single and combined cadmium and benzo(a)-pyrene on SOD, CAT activities and MDA content in the Polychaete Perinereis aibuhitensis

  • 1. National Marine Environmental Monitoring Center, Dalian 116023, China;
  • 2. College of Fisheries and Life Science, Dalian Ocean University, Dalian 116023, China;
  • 3. Hebei Ocean and Fisheries Science Research Institute, Qinhuangdao 066000, China

Abstract: In order to elucidate the effects of heavy metal and polyaromatic hydrocarbons (PAHs) on the antioxidant enzyme activity and lipid peroxidation in marine polychaetes, cadmium (Cd) and benzo (a) pyrene (B[a]P) were selected as the representatives of heavy metal and PAHs respectively and the responses of antioxidant enzyme activities and lipid peroxidation in the polychate Perinereis aibuhitensis were studied when exposed to Cd, B[a]P and their combined pollution. Results showed that under Cd single pollution stress, there were no obvious dose-effect relationships between Cd concentration and the superoxide dismutase (SOD) as well as catalase (CAT) activities in P. aibuhitensis, while malondialdehyde (MDA) content increased with increasing exposed concentrations. Under B[a]P single pollution stress, SOD, CAT activities and MDA content were all strongly correlated with waterborne B[a]P levels. Under combined pollution of Cd and B[a]P, SOD activity of P. aibuhitensis was induced in the lower exposed concentrations and inhibited in the higher exposed concentrations, CAT activity, however, was inhibited in the lower exposed concentrations then returned to control level in the higher exposed concentrations. Meanwhile, MDA content was significantly induced only in higher exposed concentration. The current study suggests that Cd can interfere the influence of B[a]P on oxidation system in polychaetes and the combined exposure of the two pollutants made an antagonistic effect.

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