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Chelation

Definition

noun

(biochemistry)

(1) The combination of a metal ion with a chemical compound, forming a ring.

(2) The binding of a bidentate or multidentate ligand.

(medicine) The method of removing heavy metal (e.g. mercury or lead) from the bloodstream using a chelate (e.g. EDTA).


Supplement

Chelation is used in separating and extracting metals, such as in countering and treating heavy metal poisoning. A chelant or chelating agent binds to form a complex with certain metal ions to inactivate the ions so that they cannot normally react with other elements or ions.


Word origin: from Greek chele, meaning claw.

Related terms:


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Poisoned by antibiotics...can anyone help?

... but in a case as severe as yours I would suggest consulting with a doctor and possibly getting a hair sample test to determine if intravenous chelation may be appropriate. I don't know if any of this helps, but my best friend's brother was in immense pain and felt like he was dying for two ...

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by ladykat324
Sun Aug 08, 2010 5:44 am
 
Forum: Human Biology
Topic: Poisoned by antibiotics...can anyone help?
Replies: 23
Views: 76863

dna architecture and chelates

Chelation usually involves a metal ion (like Ca2+, Fe2+/3+, Mg2+, or even Cu2+), but there is no metal ions involved with DNA and its architecture. It uses pretty much proteins to build its architechure with nucleosomes composed ...

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by kolean
Sun Oct 11, 2009 3:28 am
 
Forum: Molecular Biology
Topic: dna architecture and chelates
Replies: 2
Views: 1449

Re: Phytochelatin Synthase and chelation

Thank you! :D

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by plasmodesmata11
Tue Dec 02, 2008 8:33 pm
 
Forum: Botany Discussion
Topic: Phytochelatin Synthase and chelation
Replies: 2
Views: 3601

Phytochelatin Synthase and chelation

All right, I need a little help: Chelation is a process, in plants at least, where trace elements (heavy metals) are absorbed in a soluble, but bound manner. How does the plant utilize them from there? Also, uptake of iron, I hear, is necessary ...

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by plasmodesmata11
Mon Dec 01, 2008 3:51 am
 
Forum: Botany Discussion
Topic: Phytochelatin Synthase and chelation
Replies: 2
Views: 3601

Re:

[mod mode ;)]The post is OK where it is [/mod mode] But as quick note you are aware that chelation have dangerous side effects and no proven efficacity as a treatment? And also that links between mercury and autism are not proven? Oh yes, I'm aware and my kids get all ...

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by CutToTheQuick
Thu Jul 31, 2008 6:11 pm
 
Forum: Human Biology
Topic: Hg and sulphhydral groups: A layman's question.
Replies: 3
Views: 3512
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