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Effects of waterborne nano-iron on medaka (Oryzias latipes): antioxidant enzymatic activity, lipid peroxidation and histopathology
State Key Laboratory of Environmental Chemistry and Ecotoxicology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing, China.
State Key Laboratory of Environmental Chemistry and Ecotoxicology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing, China.
State Key Laboratory of Environmental Chemistry and Ecotoxicology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing, China.
State Key Laboratory of Environmental Chemistry and Ecotoxicology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing, China.
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2009 (English)In: Ecotoxicology and Environmental Safety, ISSN 0147-6513, E-ISSN 1090-2414, Vol. 72, no 3, 684-692 p.Article in journal (Refereed) Published
Abstract [en]

Toxicity tests were performed to investigate possible harmful effects on medaka exposed to nano-iron. Dose-dependent decreases of superoxide dismutase (SOD) and increases of malondialdehyde (MDA) were induced in the medaka embryo, suggesting that oxidative damage was induced by nano-iron. For adult medaka, the disturbance of antioxidative balance was observed during the early exposure period based on the monitoring of the hepatic and cerebral SOD and reduced glutathione (GSH). No terminal oxidative damage occurred during the whole exposure period, probably due to the high self-recovering capability of the adult fish. Some histopathological and morphological alterations (cell swelling, hyperplasia, and granulomas, etc.) were observed in gill and intestine tissues, which confirmed that deleterious effects occurred as a result of direct contact with nano-iron. It is suggested that further evaluation should be made concerning the risk assessment of waterborne nano-iron on aquatic life.

Place, publisher, year, edition, pages
2009. Vol. 72, no 3, 684-692 p.
Keyword [en]
Medaka; Nano-iron; Antioxidant enzyme; Histopathology; Lipid peroxidation
National Category
Environmental Sciences
Research subject
Enviromental Science
Identifiers
URN: urn:nbn:se:oru:diva-38469DOI: 10.1016/j.ecoenv.2008.09.027ISI: 000263762100003PubMedID: 19058851Scopus ID: 2-s2.0-59149098596OAI: oai:DiVA.org:oru-38469DiVA: diva2:764964
Note

Funding Agencies:

National Natural Science Foundation of China 20537020

Chinese Academy of Sciences KZCX2-YW-420-21

Beijing Nova Programme 2004A51

Available from: 2014-11-21 Created: 2014-11-07 Last updated: 2015-06-08Bibliographically approved

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