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Maternal hyperphenylalaninemia fetal effects
The Journal of Pediatrics
|February 1, 1984
Insights
Maternal hyperphenylalaninemia, a metabolic disorder, can cause birth defects in children. High blood phenylalanine levels in mothers are linked to developmental issues and malformations in their offspring.
Area of Science:
- Biochemistry
- Teratology
- Genetics
Background:
- Untreated maternal hyperphenylalaninemia is a known risk factor for fetal development.
- Understanding the teratogenic effects of phenylalanine is crucial for prenatal care.
Purpose of the Study:
- To investigate the pattern of malformations in offspring exposed to maternal hyperphenylalaninemia.
- To assess the teratogenic potential of maternal hyperphenylalaninemia and its correlation with phenylalanine levels.
Main Methods:
- Observational study of 34 children born to 11 mothers with untreated hyperphenylalaninemia.
- Clinical evaluation of malformations, growth, and neurological function in offspring.
- Correlation analysis between maternal blood phenylalanine concentrations and observed teratogenic effects.
Main Results:
- Offspring exhibited significant prenatal and postnatal growth retardation.
- Microcephaly and central nervous system dysfunction were prevalent.
- A higher incidence of malformations and a characteristic facial appearance were noted in the children.
- Teratogenic effects showed variability linked to maternal phenylalanine blood concentrations.
Conclusions:
- Maternal hyperphenylalaninemia is a significant teratogen, posing risks to fetal development.
- The severity of developmental abnormalities is associated with maternal phenylalanine levels.
- This highlights the importance of managing hyperphenylalaninemia during pregnancy to prevent adverse outcomes.
Abstract:
Thirty-four children of 11 mothers with untreated hyperphenylalaninemia had a pattern of malformation consisting of prenatal and postnatal growth retardation, microcephaly and central nervous system dysfunction, increased incidence of malformations, and a peculiar facial appearance. Maternal hyperphenylalaninemia appears to be teratogenic, with a variability related to the blood phenylalanine concentration.