Cystinuria Flashcards
1
Q
Inheritance
A
autosomal recessive disorder
2
Q
Main features of cysteinuria
A
recurrent renal stones
yellow and crystalline, appearing semi-opaque on x-ray
3
Q
Defect in membrane transport of which compounds?
A
cystine
ornithine
lysine
arginine
(mnemonic = COLA)
4
Q
Which chromosomes are affected in cysteinuria?
A
chromosome 2: SLC3A1 gene, chromosome 19: SLC7A9
5
Q
What investigation is used for diagnosis of this condition?
A
cyanide-nitroprusside test
6
Q
Management of cysteinuria?
A
hydration
D-penicillamine
urinary alkalinization (potassium citrate)
7
Q
A