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Related Experiment Videos

White cell function in Down's syndrome.

C Costello, A Webber

    Clinical Genetics
    |June 1, 1976
    PubMed
    Summary
    This summary is machine-generated.

    Patients with Down syndrome show impaired in vitro killing of Candida albicans. Despite normal phagocytosis, increased spontaneous nitroblue tetrazolium reduction suggests altered neutrophil function in Down syndrome.

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    Area of Science:

    • Immunology
    • Human Genetics

    Background:

    • Down syndrome is associated with immune dysregulation.
    • Neutrophil dysfunction can impact host defense.

    Purpose of the Study:

    • To investigate neutrophil function in individuals with Down syndrome.
    • To compare in vitro immune responses between Down syndrome patients and healthy controls.

    Main Methods:

    • Studied neutrophil function in 25 Down syndrome patients and 26 normal controls.
    • Assessed in vitro killing of Candida albicans.
    • Evaluated phagocytosis, phagocytic index, nitroblue tetrazolium reduction, peroxidase activity, and leucocyte alkaline phosphatase activity.

    Main Results:

    • Significantly lower in vitro killing of Candida albicans in the Down syndrome group.

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  • No significant difference in phagocytosis percentage or phagocytic index.
  • Increased spontaneous nitroblue tetrazolium reduction observed in 10 Down syndrome patients.
  • Normal peroxidase and leucocyte alkaline phosphatase activity.

    • Conclusions:

    • Neutrophil in vitro fungicidal capacity is impaired in Down syndrome.
    • Altered neutrophil function, indicated by nitroblue tetrazolium reduction, is present in some individuals with Down syndrome.
    • Further research is needed to elucidate the specific mechanisms of impaired neutrophil function in Down syndrome.