Dimercaprol Chelation
Dimercaprol Chelation - Related Videos
01:19
Complexation Equilibria: The Chelate Effect
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2024
In complexation reactions, metal atoms or cations interact with ligands to form donor-acceptor adducts called metal complexes. Ligands that bind through one donor site are monodentate, ligands with two donor sites are bidentate, and those with more than two donor sites are polydentate ligands. For example, ethylene diamine is a bidentate ligand that binds through two nitrogen donor atoms, forming a five-membered ring. EDTA is a polydentate ligand that binds through four oxygen and two nitrogen...
09:01
High-resolution Thermal Micro-imaging Using Europium Chelate Luminescent Coatings
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2017
Europium thenoyltrifluoroacetonate (EuTFC) has an optical luminescence line at 612 nm, whose activation efficiency decreases strongly with temperature. If a sample coated with a thin film of this material is micro-imaged, the 612 nm luminescent response intensity may be converted into a direct map of sample surface temperature.
05:36
Quantifiable and Inexpensive Cell-Free Fluorescent Method to Confirm the Ability of Novel Compounds to Chelate Iron
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Cited by 1 •
2024
We describe a fluorescent assay that can quickly and inexpensively confirm the ability of novel compounds to chelate iron. The assay measures the ability of compounds to outcompete the iron binding activity of the weak iron chelating fluorescent probe Calcein, resulting in a quantifiable increase in fluorescence when chelation occurs.
10:54
Preparation and Evaluation of 99mTc-labeled Tridentate Chelates for Pre-targeting Using Bioorthogonal Chemistry
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Cited by 7 •
2017
Here, we describe a protocol for radiolabeling and in vivo testing of tridentate 99mTc(I) chelate-tetrazine derivatives for pre-targeting and bioorthogonal chemistry.
10:44
Preparation of Biomass-based Mesoporous Carbon with Higher Nitrogen-/Oxygen-chelating Adsorption for Cu(II) Through Microwave Pre-Pyrolysis
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2019
Here, we present a protocol to synthesize nitrogen/oxygen dual-doped mesoporous carbon from biomass by chemical activation in different pyrolysis modes followed by modification. We demonstrate that the microwave pyrolysis benefits the subsequent modification process to simultaneously introduce more nitrogen and oxygen functional groups on the carbon.
FAQs
The two sulfhydryl groups provide binding sites for susceptible metal ions. When they form stable metal complexes, the metals become less available to interact with essential cellular enzymes. This mechanism is pharmacologically important because reducing those metal-enzyme interactions can limit ongoing toxicity while the complexes are directed toward elimination.
Metal redistribution is an important limitation because binding does not necessarily remove a metal immediately from every tissue compartment. Dimercaprol can alter where a metal is available within the body, potentially changing exposure of vulnerable tissues. Consequently, clinicians must balance the intended reduction in metal-enzyme interactions against possible changes in metal distribution.
The overview identifies arsenic, mercury, and gold as metals that can bind dimercaprol. It also places the treatment within selected cases of acute heavy-metal poisoning rather than routine management of every exposure. This distinction matters because the suspected metal, clinical severity, and likelihood of benefit influence whether the approach is appropriate.
Severe lead toxicity may require dimercaprol alongside another antidote rather than relying on a single treatment approach. The overview supports this combination specifically as a possible strategy in severe cases, indicating that treatment selection depends on poisoning severity. The rationale is to support more comprehensive management when one agent alone may be insufficient.
Before treatment, clinicians must determine whether the presentation represents an appropriate case of acute heavy-metal poisoning and whether dimercaprol’s potential benefits justify its risks. They also need to consider the suspected metal, illness severity, possible redistribution, and adverse effects. This assessment establishes the basis for selecting treatment and planning appropriate dosing.
Monitoring is needed because dimercaprol can produce adverse effects and may redistribute metals within the body. Clinical management therefore includes attention to treatment response, emerging toxicity, and the patient’s overall condition during dosing. The overview also emphasizes elimination through the kidneys, making careful follow-up important when evaluating how treatment is progressing.