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[Adenosine deaminase activity and immune dysfunction (author's transl)].

H Bremer, I Bauer, J Brock

    Allergie Und Immunologie
    |January 1, 1981
    PubMed
    Summary

    Adenosine deaminase (ADA) deficiency in lymphocytes causes severe combined immunodeficiency (SCID), leading to fatal immune dysfunction in infants. Enzyme replacement therapy, like transfusing red blood cells with ADA, offers a potential treatment for this genetic disorder.

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    Area of Science:

    • Biochemistry
    • Immunology
    • Genetics

    Context:

    • Severe combined immunodeficiency (SCID) is a fatal early infancy syndrome.
    • Lymphoid tissues exhibit the highest adenosine deaminase (ADA) activity.
    • ADA deficiency is linked to impaired lymphocyte proliferation and differentiation, primarily affecting cellular immunity.

    Purpose:

    • To explore the molecular mechanisms connecting ADA deficiency to immune dysfunction.
    • To discuss potential toxic agents and the genetic basis of ADA deficiency.
    • To review therapeutic strategies for ADA-deficient SCID.

    Summary:

    • ADA deficiency in lymphocytes is implicated as the cause of SCID.
    • Deoxyadenosine and its nucleotides are suspected toxic agents.

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  • The condition results from an autosomal recessive mutation in the ADA gene.
  • Therapeutic options include transplantation and enzyme replacement, such as transfusing erythrocytes with normal ADA activity.

    • Impact:

    • Elucidates the biochemical basis of a severe genetic immunodeficiency.
    • Identifies potential molecular targets and toxic metabolites.
    • Informs therapeutic strategies for ADA-deficient SCID, including enzyme replacement.
    • Highlights the critical role of ADA in immune system development and function.