NDLI: Molecular effects of diethanolamine exposure on Calanus finmarchicus (Crustacea: Copepoda).

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Molecular effects of diethanolamine exposure on Calanus finmarchicus (Crustacea: Copepoda).

Content Provider	World Health Organization (WHO)-Global Index Medicus
Author	Hansen, Bjørn Henrik Altin, Dag Booth, Andy Vang, Siv-Hege Frenzel, Max Sørheim, Kristin Rist Brakstad, Odd Gunnar Størseth, Trond R.
Description	Country affiliation: Norway Author Affiliation: Hansen BH ( SINTEF Materials and Chemistry, Marine Environmental Technology, Brattørkaia 17B, N-7465 Trondheim, Norway. bjorn.h.hansen@sintef.no)
Abstract	Alkanolamines are surface-active chemicals used in a wide range of industrial, agricultural and pharmaceutical applications and products. Of particular interest is the use of alkanolamines such as diethanolamine (DEA) in the removal of CO(2) from natural gas and for CO(2) capture following fossil fuel combustion. Despite this widespread use, relatively little is known about the ecotoxicological impacts of these compounds. In an attempt to assess the potential effects of alkanolamines in the marine environment, a key species in the North Atlantic, the planktonic copepod Calanus finmarchicus, was studied for molecular effects following sublethal exposure to DEA. DEA-induced alterations in transcriptome and metabolome profiling were assessed using a suppression subtractive hybridization (SSH) gene library method and high resolution magic angle spinning nuclear magnetic resonance (HR-MAS NMR), respectively. Effects were observed on transcription of genes reportedly involved in lipid metabolism, antioxidant systems, metal binding, and amino acid and protein catabolism. These effects were accompanied by altered expression of fatty acid derivates, amino acids (threonine, methionine, glutamine, arginine, alanine and leucine) and cholines (choline, phosphocholine and glycerophosphocholine). Together, SSH and HR-MAS NMR offer complementary screening tools for the assessment of molecular responses of C. finmarchicus to DEA and can be used in the study of other chemicals and organisms. Concentration-response and time-response relationships between DEA exposure and single gene transcription were investigated using quantitative PCR. Specific relationships were found between DEA exposure and the transcription of genes involved in protein catabolism (ubiquitin-specific protease-7), metal ion homeostasis (ferritin) and defence against oxidative stress (gamma-glutamylcysteine synthase, glutathione synthase and Cu/Zn-superoxide dismutase). At the lowest alkanolamine concentration used in these experiments, which corresponded to 0.5% of the LC(50) concentration, no transcriptional effects were observed, giving information regarding the lower molecular effect level. Finally, similar transcription patterns were observed for a number of different genes following exposure to DEA, which indicates analogous mechanisms of toxicity and response.
File Format	HTM / HTML
ISSN	0166445X
Issue Number	2
Volume Number	99
e-ISSN	18791514
Journal	Aquatic Toxicology
Language	English
Publisher	Elsevier
Publisher Date	2010-08-15
Publisher Place	Netherlands
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Discipline Toxicology Copepoda Drug Effects Ethanolamines Toxicity Gene Expression Regulation Water Pollutants, Chemical Animals Lethal Dose 50 Magnetic Resonance Spectroscopy Nucleic Acid Hybridization Journal Article Research Support, Non-u.s. Gov't
Content Type	Text
Resource Type	Article
Subject	Health, Toxicology and Mutagenesis Aquatic Science

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Gene expression of GST and CYP330A1 in lipid-rich and lipid-poor female Calanus finmarchicus (Copepoda: Crustacea) exposed to dispersed oil.

Stage-dependent and sex-dependent sensitivity to water-soluble fractions of fresh and weathered oil in the marine copepod Calanus finmarchicus.

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Molecular effects of diethanolamine exposure on Calanus finmarchicus (Crustacea: Copepoda).

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