chelation


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Related to chelation: EDTA

che·la·tion

(kē-lā'shŭn),
Complex formation involving a metal ion and two or more polar groupings of a single molecule; in heme, the Fe2+ ion is chelated by the porphyrin ring. Chelation can be used to remove an ion from participation in biologic reactions, as in the chelation of Ca2+ of blood by EDTA, which thus acts as an anticoagulant.
[G. chēlē, claw]

chelation

[kēlā′shən]
a chemical reaction in which there is a combination with a metal to form a ring-shaped molecular complex in which the metal is firmly bound and isolated. See also chelating agent.

che·la·tion

(kē-lā'shŭn)
Complex formation involving a metal ion and two or more polar groupings of a single molecule; can be used to remove an ion from participation in biologic reactions, as in the chelation of Ca2+ of blood by ethylenediaminetetraacetic acid, which thus acts as an anticoagulant in vitro.
[G. chēlē, claw]

chelation

the binding of a metal ion to an organic molecule from which it can later be released. In complex molecules, chelation results in, for example, zinc binding with amino acids in carboxypeptidase enzymes. Some chelating agents, such as penicillamine, are drugs used to treat metal poisoning: the metal is bound to the drug and can then be excreted safely Chelation also enables plants to take up metal ions such as iron that are not readily available in a free state.

Chelation

The process by which a molecule encircles and binds to a metal and removes it from tissue.
Mentioned in: Heavy Metal Poisoning

chelation

removal of ions so that they are unavailable to participate in biological reactions; tea chelates dietary iron (Fe2+), preventing its absorption; excessive tea drinking can exacerbate tendency to iron-deficiency anaemia, especially in the elderly

chelation (kē·lāˑ·shn),

n 1. medical treatment in which heavy metals are flushed from the bloodstream by means of a chelator that binds metal ions; used in cases of mercury or lead poisoning.
2. the process of ring formation by forming one or more hydrogen bonds.

che·la·tion

(kē-lā'shŭn)
Complex formation involving a metal ion and two or more polar groupings of a single molecule.
[G. chēlē, claw]

chelation (kēlā´shən),

n chemical reaction of a metallic ion (e.g., calcium ion) with a suitable reactive compound (e.g., ethylenediamine tetra-acetic acid) to form a compound in which the metal ion is tightly bound.
chelation therapy,
n the use of a chelating agent to bind firmly and sequester metallic poisons.
References in periodicals archive ?
Clinicians use chelation in children to minimize that risk, despite uncertainties about its effects in this regard.
Optimum improvement is achieved when chelation is used synergistically with additional therapies.
The rational for chelation treatment is to mobilize for rapid excretion metal that is not rapidly bound in tissue stores.
However, after 22 chelation treatments, there was complete resolution of head tremor with notable (to the patient) improvement in handwriting.
Unless we can show a consistent effect across the two TACT Trials and establish a similar mechanism to deliver the treatment safely, it will be difficult for chelation to enter the mainstream of other cardiovascular therapies," Lamas said.
In addition, no specific evidence has been given to support homeopathy, bowel bleaching or chelation.
The American College for Advancement in Medicine is the first in the world to present a live webinar-based course on Chelation therapy.
However, a small but statistically significant number - about 4 percent - were found to use alternative treatments classified by the study as potentially unsafe, invasive or unproven, such as antifungal medications, chelation therapy and vitamin B-12 injections.
The theory that chelation therapy works to diminish the calcium in your plaque has never been proved, but there's anecdotal evidence that it can help clear arteries in some people.
The EU approval is based on outcomes from the first potential placebo-controlled study of iron chelation in NTDT patients, Thalassa, which demonstrated a major dose-dependent cut in iron burden compared to placebo (p
Here he explores the chelation principles as applied to the biochemistry of mineral absorption and metabolism, specifically focusing on the formation and absorption of amino acid metal chelates.
Rich opened the Center for Environmental and Integrative Medicine in Knoxville, eventually including in his practice the administration of chelation therapy, intravenous hydrogen peroxide therapy, and the use of methadone to treat patients suffering from opioid dependency.