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Medicine

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Kidney

Question
11 out of 14
 

Which of the following amino acid absorption is affected in Cystinuria? (AIIMS May 09)



A Cystine
B Argentine

C Lysine
D All of the above

Ans. D None of the above

Cystinuria

a. The commonest aminoaciduria, causing tubular reabsorption of the dibasic amino acids Cystine, Arginine and Lysine, ornithine due to an autosomal recessive defect.

b. Features:Manifests with cystine renal stones.

c. Treatment:Fluid intake to keep urine output 3 L/day; urine alkalinization with potassium citrate (solubility of cystine).

d. Penicillamine is used, which binds cystine in soluble complexes.

Extra Edge: Do not confuse this condition with cystinosis where there are no stones.

Kidney Flashcard List

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