Uric acid

The uric acid (C 5 H 4 NR 4 O 3) is a almost insoluble Molécule in water.

The uric acid represents the privileged form of the excretion of the Azote at the Reptile S and at some Arthropode S. It is the physiological equivalent of the Urée at the Mammifère S and of the Ornithine at the Oiseau X.

The uric acid is present in small quantity in the blood (uricemy) of the mammals (20 to 70 mg/l at the human being). An increase in its concentration, called Hyperuricémie, involves the drop, person in charge of Arthropathie S (goutteuse Arthrite) and of renal Lithiase by formation of crystals in the Rein S, called renal calculi. In the case of the expectant mother, an high rate of uric acid, combined with a arterial Hypertension and an abnormal loss of Albumine in the Urine S must involve a monitoring because of the risks of toxaemia S.

Urate

  • Like the majority of the acids, the texts in Biochimie in general indicate the uric acid under the name of its Anion, urate.
  • salts of the uric acid are called Urates (Urate of sodium, Urate of ammonium, etc). The Urates have a better solubility in general (with alkaline or neutral pH) that uric acid.

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