NDLI: Oxidative damage effects in the copepod Tigriopus japonicus Mori experimentally exposed to nickel.

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Year: 2010 Volume: 19 Issue: 1

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Oxidative damage effects in the copepod Tigriopus japonicus Mori experimentally exposed to nickel.

Content Provider	World Health Organization (WHO)-Global Index Medicus
Author	Wang, Minghua Wang, Guizhong
Description	Author Affiliation: Wang M ( College of Oceanography and Environmental Science, State Key Laboratory of Marine Environmental Science, Xiamen University, 361005, Xiamen, People's Republic of China.)
Abstract	Tigriopus japonicus Mori has been recognized as a good model for toxicological testing of marine pollutants. Recently, a large number of genes have been identified from this copepod, and their mRNA expression has been studied independently against exposure to marine pollutants; however, biochemical-response information is relatively scarce. The response of T. japonicus to nickel (Ni) additions was examined under laboratory-controlled conditions in 12 days exposure. Superoxide dismutase (SOD), glutathione peroxidase (GPx), glutathione-S-transferase (GST), acetylcholinesterase (AchE), reduced glutathione (GSH), the ratio of reduced to oxidized glutathione (GSH/GSSG) and metallothionein (MT) were analyzed for Ni treatments (0, 0.125, 0.25, 0.75 and 3.0 mg/L) after 1, 4, 7 and 12 days. The thiobarbituric reactive species assay was used to evaluate lipid peroxidation (LPO) level in copepods after exposure. The results showed that Ni remarkably affected the biochemical parameters (SOD, GPx, GST, GSH, and GSH/GSSG) after certain exposure durations. However, the copepod's LPO level was significantly decreased under metal treatments after exposure, hinting that the factors involved in LPO might not significantly depend on the operations and functions in the antioxidant system. Ni exhibited the neurotoxicity to copepods, because its use obviously elevated AchE activity. During exposure, Ni initially displayed an inhibition effect but induced MT synthesis in T. japonicus by day 12, probably being responsible for metal detoxification. Thus, Ni had intervened in the detoxification process and antioxidant system of this copepod, and it could be used as a suitable bioindicator of Ni exposure via measuring SOD, GPx, GST, and MT as biomarkers.
File Format	HTM / HTML
ISSN	09639292
Issue Number	2
Volume Number	19
e-ISSN	15733017
Journal	Ecotoxicology
Language	English
Publisher	Springer
Publisher Date	2010-02-01
Publisher Place	United States
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Discipline Ecology Discipline Environmental Health Discipline Toxicology Copepoda Drug Effects Metabolism Lipid Peroxidation Nickel Toxicity Oxidative Stress Water Pollutants, Chemical Acetylcholinesterase Animals Biological Markers Enzymology Dose-response Relationship, Drug Geography Glutathione Glutathione Peroxidase Glutathione Transferase Physiology Metallothionein Superoxide Dismutase Thiobarbituric Acid Reactive Substances Time Factors Journal Article Research Support, Non-u.s. Gov't
Content Type	Text
Resource Type	Article
Subject	Health, Toxicology and Mutagenesis Medicine Toxicology Management, Monitoring, Policy and Law

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