Jove
Visualize
Contact Us
JoVE
x logofacebook logolinkedin logoyoutube logo
ABOUT JoVE
OverviewLeadershipBlogJoVE Help Center
AUTHORS
Publishing ProcessEditorial BoardScope & PoliciesPeer ReviewFAQSubmit
LIBRARIANS
TestimonialsSubscriptionsAccessResourcesLibrary Advisory BoardFAQ
RESEARCH
JoVE JournalMethods CollectionsJoVE Encyclopedia of ExperimentsArchive
EDUCATION
JoVE CoreJoVE BusinessJoVE Science EducationJoVE Lab ManualFaculty Resource CenterFaculty Site
Terms & Conditions of Use
Privacy Policy
Policies

Related Experiment Videos

Phenylketonuria and its variants.

S Kaufman, S Milstien

    Annals of Clinical and Laboratory Science
    |March 1, 1977
    PubMed
    Summary
    This summary is machine-generated.

    Phenylketonuria (PKU) can stem from defects in phenylalanine hydroxylase or related components like dihydropteridine reductase and tetrahydrobiopterin. Early diagnosis is crucial for effective treatment of PKU and its variants.

    Related Concept Videos

    You might also read

    Related Articles

    Articles linked to this work by shared authors, journal, and citation graph.

    Sort by
    Same author

    [Comparison of methods for the identification of the most common yeasts in the clinical microbiology laboratory].

    Revista Argentina de microbiologia·2003
    Same author

    [False-positive cultures due to cross contamination in tuberculosis laboratories].

    Revista Argentina de microbiologia·2002
    Same author

    Intestinal and multiorgan transplantation: the Mount Sinai experience.

    Transplantation proceedings·2002
    Same author

    Serum citrulline is a potential marker for rejection of intestinal allografts.

    Transplantation proceedings·2002
    Same author

    Splenorenal reflex regulation of arterial pressure.

    Hypertension (Dallas, Tex. : 1979)·2001
    Same author

    Influence of a short or long abstinence period on semen parameters in the ejaculate of patients with nonobstructive azoospermia.

    Fertility and sterility·2001

    Area of Science:

    • Biochemistry
    • Genetics
    • Metabolic Disorders

    Background:

    • The hepatic phenylalanine hydroxylase system is essential for phenylalanine metabolism.
    • Classical phenylketonuria (PKU) results from phenylalanine hydroxylase enzyme deficiency.
    • Variant PKU forms involve deficiencies in dihydropteridine reductase or tetrahydrobiopterin.

    Purpose of the Study:

    • To highlight the importance of differentiating classical PKU from its variant forms.
    • To discuss the clinical implications of these distinctions for treatment strategies.
    • To outline methods for identifying the specific component deficiency.

    Main Methods:

    • Enzyme assays for phenylalanine hydroxylase activity.
    • Analysis of dihydropteridine reductase and tetrahydrobiopterin levels.

    Related Experiment Videos

  • Biochemical marker assessment for neurotransmitter precursor pathways.

    • Main Results:

    • Variant PKU forms present with more severe symptoms than classical PKU.
    • Phenylalanine-restricted diets are ineffective for variant PKU due to neurotransmitter synthesis involvement.
    • Distinct diagnostic methods are required to identify the affected component.

    Conclusions:

    • Early and accurate diagnosis of PKU and its variants is critical for appropriate therapeutic intervention.
    • Distinguishing between classical PKU and variant forms ensures targeted treatments are initiated.
    • Understanding the biochemical basis of PKU variants informs treatment strategies beyond simple dietary restriction.