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Effects of exposure to sublethal propiconazole on intestine-related biochemical responses in rainbow trout, Oncorhynchus mykiss
Umeå University, Faculty of Science and Technology, Department of Chemistry.
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2010 (English)In: Chemico-Biological Interactions, ISSN 0009-2797, E-ISSN 1872-7786, Vol. 185, no 3, 241-246 p.Article in journal (Refereed) Published
Abstract [en]

The effect of long-term (30 days) exposure to PCZ (0.2, 50, and 500 microg l(-1)) on intestine-related biochemical markers in rainbow trout was investigated. Multiple biomarkers were measured, including digestive enzymes (proteolytic enzymes and amylase), antioxidant responses (TBARS, CP, SOD, CAT, GR and GPx) and energy metabolic parameters (RNA/DNA ratio, Na(+)-K(+)-ATPase). Exposure to 500 microg l(-1) PCZ led to significantly inhibited (p<0.01) proteolytic enzyme and amylase activity. Activities of the antioxidant enzymes SOD, CAT, and GPx gradually increased at lower PCZ concentrations (0.2 and 50 microg l(-1)). At the highest concentration (500 microg l(-1)), oxidative stress was apparent as significant higher (p<0.05) lipid peroxidation and protein carbonyls, associated with an inhibition of antioxidant enzymes activity. Moreover, energy metabolic parameters (RNA/DNA ratio, Na(+)-K(+)-ATPase) were significantly inhibited (p<0.01) in the intestines of fish exposed to 500 microg l(-1) PCZ, compared with controls. We suggest that long-term exposure to PCZ could result in several responses in intestine-related biochemical markers, which potentially could be used as indicators for monitoring residual PCZ present in the aquatic environment.

Place, publisher, year, edition, pages
2010. Vol. 185, no 3, 241-246 p.
Keyword [en]
fish intestine, residual pesticide, digestive enzyme, oxidative stress, RNA/DNA ratio, Na+-K+-ATPase
National Category
Chemical Sciences
Identifiers
URN: urn:nbn:se:umu:diva-33959DOI: 10.1016/j.cbi.2010.02.040ISI: 000278169700011PubMedID: 20193671OAI: oai:DiVA.org:umu-33959DiVA: diva2:318884
Available from: 2010-05-11 Created: 2010-05-11 Last updated: 2017-12-12Bibliographically approved

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CiteExportLink to record
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