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Dietary treatment eliminates succinylacetone from the urine of a patient with tyrosinaemia type 1.

Abstract
Over an 18-month period serial observations of plasma tyrosine, methionine and urinary tyrosine metabolites were made and compared with urinary succinylacetone excretion in an infant with tyrosinaemia type 1 treated by diet alone. Despite broadly similar profiles there were significant temporal and quantitative differences between each of these metabolic parameters. Only when plasma tyrosine was kept in the low-normal range by strict phenylalanine restriction (10-15 mg phenylalanine/kg body weight) was detectable succinylacetone consistently eliminated from the urine. Urinary succinylacetone is the only measure of metabolite accumulation immediately proximal to the enzyme defect and its routine measurement will allow more effective control of dietary treatment.
AuthorsM D Bain, P Purkiss, M Jones, P Bingham, T E Stacey, R A Chalmers
JournalEuropean journal of pediatrics (Eur J Pediatr) Vol. 149 Issue 9 Pg. 637-9 (Jun 1990) ISSN: 0340-6199 [Print] Germany
PMID2373116 (Publication Type: Case Reports, Journal Article)
Chemical References
  • Heptanoates
  • Heptanoic Acids
  • Tyrosine
  • Heme
  • Phenylalanine
  • succinylacetone
  • Methionine
Topics
  • Amino Acid Metabolism, Inborn Errors (diet therapy)
  • Female
  • Heme (biosynthesis)
  • Heptanoates (urine)
  • Heptanoic Acids (urine)
  • Humans
  • Infant
  • Methionine (blood)
  • Phenylalanine (administration & dosage)
  • Tyrosine (blood)

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