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

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...

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Published in:European journal of pediatrics 1990-06, Vol.149 (9), p.637-639
Main Authors: Bain, M D, Purkiss, P, Jones, M, Bingham, P, Stacey, T E, Chalmers, R A
Format: Article
Language:English
Subjects:
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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description 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.
doi_str_mv 10.1007/BF02034752
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subjects Amino Acid Metabolism, Inborn Errors - diet therapy
Female
Heme - biosynthesis
Heptanoates - urine
Heptanoic Acids - urine
Humans
Infant
Methionine - blood
Phenylalanine - administration & dosage
Tyrosine - blood
title Dietary treatment eliminates succinylacetone from the urine of a patient with tyrosinaemia type 1
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