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Phenylalanine tolerance test in parents of phenylketonurics
Acta Anthropogenetica
|January 1, 1980
Insights
Phenylalanine tolerance tests reveal delayed blood clearance in parents of phenylketonuric individuals. This suggests the test can identify carriers of the phenylketonuria gene.
Area of Science:
- Biochemistry
- Genetics
- Metabolic Disorders
Background:
- Phenylketonuria (PKU) is an inherited metabolic disorder.
- Carrier screening is crucial for genetic counseling and family planning.
Purpose of the Study:
- To evaluate the utility of the phenylalanine tolerance test in identifying heterozygote carriers of phenylketonuria.
- To compare phenylalanine metabolism in parents of phenylketonuric individuals versus control subjects.
Main Methods:
- Administered phenylalanine tolerance tests to three parents of phenylketonuric individuals.
- Compared blood phenylalanine clearance rates between the parent group and a control group.
Main Results:
- Parents of phenylketonuric individuals exhibited a statistically significant delayed clearance of phenylalanine from their blood compared to controls.
- This delayed clearance indicates altered phenylalanine metabolism in heterozygote carriers.
Conclusions:
- The phenylalanine tolerance test is a viable method for detecting heterozygote carriers of phenylketonuria.
- This diagnostic tool can aid in identifying individuals at risk of passing on the PKU gene.
Abstract:
Phenylalanine tolerance test was carried out in three parents of phenylketonurics and the results compared with the test carried out in control subjects. Compared to the controls, the parents showed a delayed clearance of phenylalanine levels in blood. The findings indicate that this test could be used to detect heterozygote carriers.