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Uric acid

uric acid

(Science: biochemistry) The final product of nitrogenous excretion in animals that require to conserve water, such as terrestrial insects or have limited storage space, such as birds and their eggs. Uric acid has very low water solubility and crystals may be deposited in, for example: butterflies wings to impart irridescence.

Uric acid, a crystalline body, present in small quantity in the urine of man and most mammals. Combined in the form of urate of ammonia, it is the chief constituent of the urine of birds and reptiles, forming the white part. Traces of it are also found in the various organs of the body. It is likewise a common constituent, either as the free acid or as a urate, of urinary or renal calculi and of the so-called gouty concretions. From acid urines, uric acid is frequently deposited, on standing in a cool place, in the form of a reddish yellow sediment, nearly always crystalline. Chemically, it is composed of carbon, hydrogen, nitrogen, and oxygen, and by decomposition yields urea, among other products. It can be made synthetically by heating together urea and glycocoll.

It was formerly called also lithic acid, in allusion to its occurrence in stone, or calculus.

See: tophus.

Structure: C5H4N4O3


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Re: Re:

... the body as waste; you cannot overdose on vitamin C (though it is often acidic and may cause some sort of urinary tract infection... but not because ... of vitamin C can affect your kidney function. Some people with high uric acid are asked not to consume vitamin C because its acidic property ...

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Fri Feb 11, 2011 12:47 am
 
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... of purine metabolism called Gout. from the Wikipedia on Gout . . . . Uric acid is a product of purine metabolism, and in humans is normally excreted in the urine. Purines ...

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by kolean
Sun Jan 03, 2010 12:01 am
 
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... Nessler's reagent (Ammonia), but a red filter when using Benedict's (Uric acid) reagent? Thanks you.

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Wed Nov 25, 2009 11:13 pm
 
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Topic: Coloured Filters on Colorimeter.
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... do have leathery skin. Could they also gain a kidney that produces uric acid? Maybe. But the point is, if you had a toad that had all the characteristics of a reptilian ...

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by mith
Thu Dec 20, 2007 9:35 am
 
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Topic: Evolution
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urea

Urea and uric acid can both be products of protein breakdown - whole groups of animals differ by which final product they excrete.

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by Darby
Tue Mar 06, 2007 4:39 pm
 
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