The influence of cadmium on the antioxidant enzyme activities in polychaete Perinereis aibuhitensis Grube (Annelida: Polychaeta) |
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| Authors: | Xiutang Yuan Aihua Chen Yibing Zhou Haiying Liu Dazuo Yang |
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| Institution: | (1) Office of Policy Research, Korea Ocean Research and Development Institute (KORDI), PO Box 29, Ansan, 425-600, Republic of Korea;(2) I. M. Systems Group at Environmental Modeling Center, National Centers for Environmental Prediction, NOAA, Camp Springs, MD 20746, USA;(3) Division of Environmental Science and Ecological Engineering, Korea University, Seoul, 136-713, Republic of Korea;(4) Applied Science Associates, South Kingstown, RI 02879, USA;(5) School of Earth and Environmental Sciences, Seoul National University, Seoul, 151-742, Republic of Korea;(6) Department of Ecological Engineering, Pukyong National University, Busan, 608-737, Republic of Korea;(7) Department of Civil and Environmental Engineering, Dongguk University, Seoul, 100-715, Republic of Korea;(8) Department of Environmental Engineering and Biotechnology, Myongji University, Yongin, Gyeonggi-do, 449-728, Republic of Korea; |
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| Abstract: | The infaunal polychaete Perinereis aibuhitensis Grube, distributed widely along Asian coasts and estuaries, is considered a useful animal model in ecotoxicological tests
and a promising candidate in biomonitoring programs. This paper deals with the activities of antioxidant enzymes including
superoxide dismutase (SOD), catalase (CAT), and glutathione peroxidases (GSH-Px) in infaunal polychaete P. aibuhitensis exposed to a series of sublethal water-bound cadmium (Cd) concentrations (0, 0.34, 1.72, 3.44, 6.89, and 17.22 mg L−1) under a short-term exposure (1–8 d). The results indicate that the SOD and GSH-Px activities in P. aibuhitensis are stimulated first and then renewed to the original level. The CAT activity of worms decreases at an earlier exposure time
but increases to the control values at a later exposure time. Our study suggests that Cd can interfere with the antioxidant
defense system of P. aibuhitensis. However, the changes in antioxidant enzyme activities for this species do not show the best promise as biomarkers in Cd
biomonitoring of estuarine and coastal zones because weak or non-dose-effect relationships between the antioxidant enzymes
activities and Cd levels are found. |
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