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Integrated 1H NMR-based metabolomics analysis of earthworm responses to sub-lethal Pb exposure

Integrated 1H NMR-based metabolomics analysis of earthworm responses to sub-lethal Pb exposure Environmental contextHeavy metals are non-degradable and are therefore a severe and persistent environmental menace. The toxic effects of Pb were investigated using NMR to determine the metabolic changes in earthworms exposed to Pb. The approach using 1H NMR to analyse earthworm metabolomics demonstrated great potential as a reliable, rapid and convenient tool to assess the toxicity of heavy metals and could be used to identify warning signs of heavy metal contamination of soil.AbstractA 1H nuclear magnetic resonance (NMR)-based approach to metabolomics combined with atomic absorption spectroscopy, histopathological examination and biochemical assessment was used to determine the toxic effects of lead (Pb) on earthworms (Eisenia fetida). Earthworms were exposed to Pb in a lead nitrate solution at converted concentrations of 1.25, 5.0 and 20gcm2 in contact tests for 48h. Based on histopathological inspection, the epidermis, muscles, chloragogenous tissues and intestinal epithelium were severely impaired. Based on biochemical assessment, a disruption of the antioxidative system and neurotoxic effects in earthworms occurred following exposure to Pb. Orthogonal signal correctionpartial least-squares-discriminant analysis of NMR profiles indicated that Pb exposure in earthworms caused widespread metabolic changes, which were associated with oxidative stress, neurotransmitter imbalance, disruption of osmotic equilibrium and interference in energy metabolism and nucleic acid metabolism. The integrated metabolomics approach provided new insights into Pb-induced toxicity in earthworms. Metabolomics is a powerful and highly effective approach and has great promise to determine the ecotoxicological effects and the underlying mechanisms of toxicity of heavy metals. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Environmental Chemistry CSIRO Publishing

Integrated 1H NMR-based metabolomics analysis of earthworm responses to sub-lethal Pb exposure

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References (62)

Publisher
CSIRO Publishing
Copyright
Copyright © The Author(s). Published by CSIRO Publishing
ISSN
1448-2517
eISSN
1449-8979
DOI
10.1071/EN15192
Publisher site
See Article on Publisher Site

Abstract

Environmental contextHeavy metals are non-degradable and are therefore a severe and persistent environmental menace. The toxic effects of Pb were investigated using NMR to determine the metabolic changes in earthworms exposed to Pb. The approach using 1H NMR to analyse earthworm metabolomics demonstrated great potential as a reliable, rapid and convenient tool to assess the toxicity of heavy metals and could be used to identify warning signs of heavy metal contamination of soil.AbstractA 1H nuclear magnetic resonance (NMR)-based approach to metabolomics combined with atomic absorption spectroscopy, histopathological examination and biochemical assessment was used to determine the toxic effects of lead (Pb) on earthworms (Eisenia fetida). Earthworms were exposed to Pb in a lead nitrate solution at converted concentrations of 1.25, 5.0 and 20gcm2 in contact tests for 48h. Based on histopathological inspection, the epidermis, muscles, chloragogenous tissues and intestinal epithelium were severely impaired. Based on biochemical assessment, a disruption of the antioxidative system and neurotoxic effects in earthworms occurred following exposure to Pb. Orthogonal signal correctionpartial least-squares-discriminant analysis of NMR profiles indicated that Pb exposure in earthworms caused widespread metabolic changes, which were associated with oxidative stress, neurotransmitter imbalance, disruption of osmotic equilibrium and interference in energy metabolism and nucleic acid metabolism. The integrated metabolomics approach provided new insights into Pb-induced toxicity in earthworms. Metabolomics is a powerful and highly effective approach and has great promise to determine the ecotoxicological effects and the underlying mechanisms of toxicity of heavy metals.

Journal

Environmental ChemistryCSIRO Publishing

Published: Mar 23, 2016

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