Case study- Hartnup’s disease- A 28- year-old man complains of a rash on his sun exposed skin, diarrhea and ..

22/01/2014

Amino acid chemistry

QUESTION OF THE DAY

A 28- year-old man complains of a rash on his sun exposed skin, diarrhea and loss of balance. His urinalysis results are significant for an increase in neutral amino acids. The patient is diagnosed with Hartnup’s disease that occurs due to  defective transport of neutral amino acids in the kidney. Apart from tryptophan which of the following amino acids would have been found in urine?

A. Lysine

B. Arginine

C. Histidine

D. Phenyl alanine

E. Glutamic acid

hartnup disease

Figure- Patient with hartnup disease showing pellagra like rashes

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