Assessment of cytotoxicity, genotoxicity and 7-ethoxyresorufin-O-deethylase (EROD) induction in sediment extracts from New Zealand urban estuaries

Sediments represent a major sink for contaminants resulting from industrial and agricultural activities - especially lipophilic substances. This study exclusively used in vitro methodologies to characterize specific toxicity effects of contaminants in sediment extracts from two urban New Zealand est...

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Veröffentlicht in:Ecotoxicology (London, England). - 1992. - 26(2017), 2 vom: 07. März, Seite 211-226
1. Verfasser: Heinrich, Patrick (VerfasserIn)
Weitere Verfasser: Petschick, Lara L, Northcott, Grant L, Tremblay, Louis A, Ataria, James M, Braunbeck, Thomas
Format: Online-Aufsatz
Sprache:English
Veröffentlicht: 2017
Zugriff auf das übergeordnete Werk:Ecotoxicology (London, England)
Schlagworte:Journal Article Comet assay Estuarine pollution Micronucleus assay Neutral red assay Sediment toxicity Specific toxicity Water Pollutants, Chemical Cytochrome P-450 CYP1A1 EC 1.14.14.1
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245 1 0 |a Assessment of cytotoxicity, genotoxicity and 7-ethoxyresorufin-O-deethylase (EROD) induction in sediment extracts from New Zealand urban estuaries 
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520 |a Sediments represent a major sink for contaminants resulting from industrial and agricultural activities - especially lipophilic substances. This study exclusively used in vitro methodologies to characterize specific toxicity effects of contaminants in sediment extracts from two urban New Zealand estuaries. Sediment extracts were prepared and tested for a range of biological endpoints. The micronucleus and comet assays in V79 cells were used to assess genotoxicity. Induction of 7-ethoxyresorufin-O-deethylase in piscine RTL-W1 cells was determined to estimate dioxin-like toxicity. Cytotoxic potentials were analyzed by neutral red uptake and MTT reduction. There was evidence of strong dioxin-like toxicity and moderate cytotoxicity. Genotoxicity was distinct in the micronucleus assay, but low in the comet assay. The results indicate the presence of chemicals in the sediments with the potential to pose a risk through multiple mechanisms of toxicity, the identities and amounts of which will be disclosed in a parallel study alongside with in vivo toxicity data 
650 4 |a Journal Article 
650 4 |a Comet assay 
650 4 |a Estuarine pollution 
650 4 |a Micronucleus assay 
650 4 |a Neutral red assay 
650 4 |a Sediment toxicity 
650 4 |a Specific toxicity 
650 7 |a Water Pollutants, Chemical  |2 NLM 
650 7 |a Cytochrome P-450 CYP1A1  |2 NLM 
650 7 |a EC 1.14.14.1  |2 NLM 
700 1 |a Petschick, Lara L  |e verfasserin  |4 aut 
700 1 |a Northcott, Grant L  |e verfasserin  |4 aut 
700 1 |a Tremblay, Louis A  |e verfasserin  |4 aut 
700 1 |a Ataria, James M  |e verfasserin  |4 aut 
700 1 |a Braunbeck, Thomas  |e verfasserin  |4 aut 
773 0 8 |i Enthalten in  |t Ecotoxicology (London, England)  |d 1992  |g 26(2017), 2 vom: 07. März, Seite 211-226  |w (DE-627)NLM098212214  |x 1573-3017  |7 nnns 
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