Application of physiologically based modelling and transcriptomics to probe the systems toxicology of aldicarb for Caenorhabditis elegans (Maupas 1900)

The toxicity of aldicarb on movement, life cycle, population growth rate and resource allocation, and the gene expression changes underpinning these effects, were investigated for Caenorhabditis elegans. A clear effect of aldicarb on nematode movement was found suggesting that this pesticide acts as...

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Veröffentlicht in:Ecotoxicology (London) 2011-03, Vol.20 (2), p.397-408
Hauptverfasser: Wren, Jodie F, Kille, Peter, Spurgeon, David J, Swain, Suresh, Sturzenbaum, Stephen R, Jager, Tjalling
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container_title Ecotoxicology (London)
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creator Wren, Jodie F
Kille, Peter
Spurgeon, David J
Swain, Suresh
Sturzenbaum, Stephen R
Jager, Tjalling
description The toxicity of aldicarb on movement, life cycle, population growth rate and resource allocation, and the gene expression changes underpinning these effects, were investigated for Caenorhabditis elegans. A clear effect of aldicarb on nematode movement was found suggesting that this pesticide acts as a neurotoxicant. Aldicarb also had an effect on life cycle traits including low concentration life-span extension; high concentration brood size reduction and a high concentration extension of time to first egg. All life-cycle and growth data were integrated into a biology-based model (DEBtox) to characterise aldicarb effects on life-history traits, resource allocation and population growth rate within a single modelling framework. The DEBtox fits described concentration dependent effects on individual traits and population growth rate and indicated that the most probable mechanism of action of the pesticide was an increase in energy demands for somatic and reproductive tissue maintenance. Transcriptomic profiling indicated that aldicarb was associated with changes in amino acid metabolism, DNA structure, fatty acid metabolism and cytochrome P450 mediated xenobiotic metabolism. The changes in the amino acid and fatty acid pathways suggest an effect of aldicarb on protein integrity; while effects on DNA suggests that aldicarb influence DNA morphology or replication. Both these effects have the potential to incur increased costs for structural maintenance of macromolecules. These effects, coupled to the effect on biotransformation enzymes also seen, represent the materialisation of the maintenance costs indicated by DEBtox modelling.
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and Environmental Science</subject><subject>Ecology</subject><subject>Ecotoxicology</subject><subject>eggs</subject><subject>Environment</subject><subject>Environmental Management</subject><subject>enzymes</subject><subject>fatty acid metabolism</subject><subject>Fatty acids</subject><subject>Gene Expression</subject><subject>Gene Expression - drug effects</subject><subject>Gene Expression Profiling</subject><subject>gene expression regulation</subject><subject>genetics</subject><subject>Growth rate</subject><subject>Insecticides</subject><subject>Insecticides - toxicity</subject><subject>Investigations</subject><subject>Life Cycle Stages</subject><subject>Life Cycle Stages - drug effects</subject><subject>Life cycles</subject><subject>Life history</subject><subject>Life-span</subject><subject>Maintenance costs</subject><subject>mechanism of action</subject><subject>Metabolism</subject><subject>Modelling</subject><subject>Models, 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of physiologically based modelling and transcriptomics to probe the systems toxicology of aldicarb for Caenorhabditis elegans (Maupas 1900)</title><author>Wren, Jodie F ; Kille, Peter ; Spurgeon, David J ; Swain, Suresh ; Sturzenbaum, Stephen R ; Jager, Tjalling</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c656t-a1825046edc3b382063602f5962c3082a8391aecc364cb9ce8d77efc0d2f48353</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2011</creationdate><topic>Acetylcholinesterase</topic><topic>Acetylcholinesterase - metabolism</topic><topic>Aldicarb</topic><topic>Aldicarb - toxicity</topic><topic>amino acid metabolism</topic><topic>Amino acids</topic><topic>Animals</topic><topic>Biological effects</topic><topic>Biotransformation</topic><topic>Caenorhabditis elegans</topic><topic>Caenorhabditis elegans - drug effects</topic><topic>Caenorhabditis elegans - genetics</topic><topic>Caenorhabditis elegans - 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language eng
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source MEDLINE; Springer Nature - Complete Springer Journals
subjects Acetylcholinesterase
Acetylcholinesterase - metabolism
Aldicarb
Aldicarb - toxicity
amino acid metabolism
Amino acids
Animals
Biological effects
Biotransformation
Caenorhabditis elegans
Caenorhabditis elegans - drug effects
Caenorhabditis elegans - genetics
Caenorhabditis elegans - physiology
Carbamates
Cholinesterase Inhibitors
Cholinesterase Inhibitors - toxicity
cytochrome P-450
DEBtox
Deoxyribonucleic acid
DNA
drug effects
Earth and Environmental Science
Ecology
Ecotoxicology
eggs
Environment
Environmental Management
enzymes
fatty acid metabolism
Fatty acids
Gene Expression
Gene Expression - drug effects
Gene Expression Profiling
gene expression regulation
genetics
Growth rate
Insecticides
Insecticides - toxicity
Investigations
Life Cycle Stages
Life Cycle Stages - drug effects
Life cycles
Life history
Life-span
Maintenance costs
mechanism of action
Metabolism
Modelling
Models, Biological
Nematoda
Nervous System
Nervous System - drug effects
pesticidal properties
Pesticides
Physiological aspects
physiology
Population growth
protein metabolism
reproduction
Resource allocation
toxicity
Toxicology
transcriptomics
title Application of physiologically based modelling and transcriptomics to probe the systems toxicology of aldicarb for Caenorhabditis elegans (Maupas 1900)
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