Results 211 to 220 of about 121,539 (259)
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Quarterly Reviews of Biophysics, 1974
Several reviews have been published recently on the toxicity of heavy metals, but few of these have made any reference to the influence of the nutritional state of animals upon their tolerance of heavy metals. Furthermore, the clinical and metabolic changes occurring as a consequence of increased dietary intake of heavy metals are extremely dependent ...
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Several reviews have been published recently on the toxicity of heavy metals, but few of these have made any reference to the influence of the nutritional state of animals upon their tolerance of heavy metals. Furthermore, the clinical and metabolic changes occurring as a consequence of increased dietary intake of heavy metals are extremely dependent ...
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Metal toxicity and the respiratory tract
European Respiratory Journal, 1990The type of lung disease caused by metal compounds depends on the nature of the offending agent, its physicochemical form, the dose, exposure conditions and host factors. The fumes or gaseous forms of several metals, e.g. cadmium (Cd), manganese (Mn), mercury (Hg), nickel carbonyl (Nl(CO)4, zinc chloride (ZnCl2), vanadium pentoxide (V2O5), may lead to ...
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General Aspects of Metal Toxicity
Current Medicinal Chemistry, 2014This review is focused on the general mechanisms of metal toxicity in humans. The possible and mainly confirmed mechanisms of their action are discussed. The metals are divided into four groups due to their toxic effects. First group comprises of metal ions acting as Fenton reaction catalyst mainly iron and copper. These types of metal ions participate
H, Kozlowski +4 more
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Predicting the toxicity of metal mixtures
Science of The Total Environment, 2014The toxicity of single and multiple metal (Cd, Cu, Pb, and Zn) solutions to trout is predicted using an approach that combines calculations of: (1) solution speciation; (2) competition and accumulation of cations (H, Ca, Mg, Na, Cd, Cu, Pb, and Zn) on low abundance, high affinity and high abundance, low affinity biotic ligand sites; (3) a toxicity ...
Laurie S, Balistrieri +1 more
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Epigenetic mechanisms in metal toxicity
Toxicology Mechanisms and Methods, 2011The true understanding of epigenetics evolved over time as our knowledge on DNA methylation and chromatin modifications and their effects on gene expression increased. The current flurry of research on epigenetics and the increasing documentation of the effects of various environmental factors on DNA methylation, chromatin modification, as well as on ...
Domniki, Fragou +4 more
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Toxicity, bioavailability and metal speciation
Comparative Biochemistry and Physiology Part C: Pharmacology, Toxicology and Endocrinology, 19931. Environmental toxicology emphasizes the difference from traditional toxicology in which pure compounds of interest are added to purified diets, or injected into the test animals. When the objective is to study the fate and effects of trace elements in the environment, knowledge of the speciation of the elements and their physico-chemical forms is ...
S B, Jonnalagadda, P V, Rao
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Plant responses to metal toxicity
Comptes Rendus de l'Académie des Sciences - Series III - Sciences de la Vie, 1999Metal toxicity for living organisms involves oxidative and/or genotoxic mechanisms. Plant protection against metal toxicity occurs, at least in part, through control of root metal uptake and of long distance metal transport. Inside cells, proteins such as ferritins and metallothioneins, and glutathion-derived peptides named phytochelatins, participate ...
J F, Briat, M, Lebrun
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Mechanisms of metal toxicity in plants
Metallomics, 2016Metal toxicity in plants is still a global problem for the environment, agriculture and ultimately human health.
Hendrik Küpper, Elisa Andresen
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