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Related Experiment Videos

Alpha-1-antitrypsin (Pi) types in Down's syndrome.

P Arnaud, N M Burdash, G B Wilson

    Clinical Genetics
    |October 1, 1976
    PubMed
    Summary

    This study found that most individuals with Down syndrome have normal Alpha-1-antitrypsin (Pi) phenotypes. Therefore, Alpha-1-antitrypsin deficiency is unlikely to cause respiratory issues in this population.

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    Area of Science:

    • Genetics
    • Pulmonology
    • Pediatrics

    Background:

    • Down syndrome is associated with various health complications.
    • Respiratory fragility is a concern in individuals with Down syndrome.
    • Alpha-1-antitrypsin (Pi) phenotypes are crucial for lung health.

    Purpose of the Study:

    • To investigate the prevalence of Alpha-1-antitrypsin (Pi) phenotypes in patients with Down syndrome.
    • To determine if Alpha-1-antitrypsin deficiency contributes to respiratory fragility in Down syndrome.

    Main Methods:

    • Phenotyping of Alpha-1-antitrypsin was performed on 40 patients with Down syndrome.
    • Analysis of Pi phenotypes, including M, MS, and M variants.

    Main Results:

    • Thirty-six patients exhibited the normal M phenotype.
    • Two patients presented with the deficient MS phenotype.
    • Two patients showed M variants, significance under investigation.

    Conclusions:

    • The majority of Down syndrome patients possess normal Alpha-1-antitrypsin phenotypes.
    • Alpha-1-antitrypsin deficiency does not appear to be a significant factor in the respiratory fragility of individuals with Down syndrome.

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