Hyperphenylalaninemia in a premature infant with heterozygosity for phenylketonuria.
J Perinat Med
; 32(4): 383-5, 2004.
Article
em En
| MEDLINE
| ID: mdl-15346830
ABSTRACT
Hyperphenylalaninemia in preterm neonates with heterozygosity for phenylketonuria has previously not been described. We report on a very low birth weight infant, born at a gestational age of 27+5 weeks with a birth weight of 1080 g. Due to a positive family history prenatal diagnosis for phenylketonuria was performed, revealing heterozygosity for classic phenylketonuria. Yet the girl showed hyperphenylalaninemia with a maximum serum phenylalanine concentration of 515 micromol/l on the eighth day of life. Phenylalanine-restrictive parenteral and enteral nutrition was kept from the eighth until the 41st day of life. At term serum phenylalanine concentrations had normalized. We hypothesize that heterozygosity for phenylketonuria may be a risk factor for hyperphenylalaninemia in preterm born infants. Prematurity and the resulting immaturity of liver function with the genetically determined reduced activity of phenylalanine hydroxylase might have caused hyperphenylalaninemia in this girl.
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Base de dados:
MEDLINE
Assunto principal:
Fenilalanina
/
Fenilcetonúrias
/
Recém-Nascido Prematuro
Tipo de estudo:
Diagnostic_studies
/
Risk_factors_studies
Limite:
Female
/
Humans
/
Newborn
Idioma:
En
Ano de publicação:
2004
Tipo de documento:
Article