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Modelling uptake and toxicity of nickel in solution to Enchytraeus crypticus with biotic ligand model theory.
Environ Pollut. 2014 May; 188:17-26.EP

Abstract

Protons and other cations may inhibit metal uptake and alleviate metal toxicity in aquatic organisms, but less is known about these interactions in soil organisms. The present study investigated the influence of solution chemistry on uptake and toxicity of Ni in Enchytraeus crypticus after 14 days exposure. Ca(2+), Mg(2+) and Na(+) were found to exert significant effects on both uptake and toxicity of Ni. An extended Langmuir model, which incorporated cation competition effects, well predicted Ni uptake. The LC50{Ni(2+)} predicted by a developed Biotic Ligand Model matched well with observed values. These suggest that cation competition needs to be taken into account when modelling uptake and effects. The binding constants of Ni(2+), Mg(2+) and Na(+) on the uptake and toxic action sites were similar, but for Ca(2+) they differed. This indicates that the effect of Ca(2+) on Ni(2+) toxicity cannot simply be explained by the competition for entry into organism.

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Publisher Full Text (DOI)

Authors+Show Affiliations

He E
Department of Ecological Science, Faculty of Earth and Life Sciences, VU University, De Boelelaan 1085, 1081HV Amsterdam, The Netherlands.
Qiu H
Institute of Environmental Sciences, Leiden University, Leiden, The Netherlands.
Van Gestel CA
Department of Ecological Science, Faculty of Earth and Life Sciences, VU University, De Boelelaan 1085, 1081HV Amsterdam, The Netherlands. Electronic address: kees.van.gestel@vu.nl.

MeSH

AnimalsLigandsModels, BiologicalModels, ChemicalNickelOligochaetaSoilSoil Pollutants

Pub Type(s)

Journal Article
Research Support, Non-U.S. Gov't

Language

eng

PubMed ID

24531268

Citation

He, Erkai, et al. "Modelling Uptake and Toxicity of Nickel in Solution to Enchytraeus Crypticus With Biotic Ligand Model Theory." Environmental Pollution (Barking, Essex : 1987), vol. 188, 2014, pp. 17-26.
He E, Qiu H, Van Gestel CA. Modelling uptake and toxicity of nickel in solution to Enchytraeus crypticus with biotic ligand model theory. Environ Pollut. 2014;188:17-26.
He, E., Qiu, H., & Van Gestel, C. A. (2014). Modelling uptake and toxicity of nickel in solution to Enchytraeus crypticus with biotic ligand model theory. Environmental Pollution (Barking, Essex : 1987), 188, 17-26. https://doi.org/10.1016/j.envpol.2014.01.013
He E, Qiu H, Van Gestel CA. Modelling Uptake and Toxicity of Nickel in Solution to Enchytraeus Crypticus With Biotic Ligand Model Theory. Environ Pollut. 2014;188:17-26. PubMed PMID: 24531268.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Modelling uptake and toxicity of nickel in solution to Enchytraeus crypticus with biotic ligand model theory. AU - He,Erkai, AU - Qiu,Hao, AU - Van Gestel,Cornelis A M, Y1 - 2014/02/13/ PY - 2013/08/08/received PY - 2013/12/18/revised PY - 2014/01/17/accepted PY - 2014/2/18/entrez PY - 2014/2/18/pubmed PY - 2014/5/16/medline KW - Biotic Ligand Model KW - Langmuir model KW - Nickel KW - Toxicity KW - Uptake SP - 17 EP - 26 JF - Environmental pollution (Barking, Essex : 1987) JO - Environ Pollut VL - 188 N2 - Protons and other cations may inhibit metal uptake and alleviate metal toxicity in aquatic organisms, but less is known about these interactions in soil organisms. The present study investigated the influence of solution chemistry on uptake and toxicity of Ni in Enchytraeus crypticus after 14 days exposure. Ca(2+), Mg(2+) and Na(+) were found to exert significant effects on both uptake and toxicity of Ni. An extended Langmuir model, which incorporated cation competition effects, well predicted Ni uptake. The LC50{Ni(2+)} predicted by a developed Biotic Ligand Model matched well with observed values. These suggest that cation competition needs to be taken into account when modelling uptake and effects. The binding constants of Ni(2+), Mg(2+) and Na(+) on the uptake and toxic action sites were similar, but for Ca(2+) they differed. This indicates that the effect of Ca(2+) on Ni(2+) toxicity cannot simply be explained by the competition for entry into organism. SN - 1873-6424 UR - https://www.unboundmedicine.com/medline/citation/24531268/Modelling_uptake_and_toxicity_of_nickel_in_solution_to_Enchytraeus_crypticus_with_biotic_ligand_model_theory_ DB - PRIME DP - Unbound Medicine ER -