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Accelerated Type 1 Diabetes Induction in Mice by Adoptive Transfer of Diabetogenic CD4+ T Cells
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[The immunity during the pre-clinical period of type I diabetes mellitus]

K P Zak, M A Gruzov, V V Afanas'eva

    Klinicheskaia Meditsina
    |November 8, 2006
    PubMed

    Insights

    Healthy children with diabetes-associated autoantibodies (DAAB) show reduced T-lymphocytes and natural killer cells. These immune changes precede type 1 diabetes mellitus (DM 1) onset, indicating a hidden autoimmune process.

    Area of Science:

    • Immunology
    • Endocrinology
    • Cell Biology

    Context:

    • Type 1 diabetes mellitus (DM 1) is an autoimmune disease with a prolonged preclinical phase.
    • Understanding early immune alterations in at-risk individuals is crucial for prevention strategies.
    • Diabetes-associated autoantibodies (DAAB) are key markers of autoimmune activity.

    Purpose:

    • To investigate immune status, including lymphocyte phenotype and ultrastructure, in healthy children with a family history of DM 1.
    • To compare immune profiles between children with and without DAAB, and with newly diagnosed DM 1.
    • To identify early immunological changes indicative of a pre-diabetic autoimmune process.

    Summary:

    • Children with DAAB exhibited significantly lower counts of T-lymphocytes (CD3+), T-helpers (CD4+), and natural killer cells (CD56+).
    • Electron microscopy revealed ultrastructural changes in CD4+ and CD56+ lymphocytes in DAAB-positive children, suggesting altered function.
    • These immune alterations mirror those found in newly diagnosed DM 1 patients, indicating a concealed autoimmune process.

    Impact:

    • Immune changes occur in healthy individuals long before clinical DM 1 onset, reflecting a subclinical autoimmune process.
    • DAAB detection is vital for understanding the pre-diabetic state and developing novel prevention and treatment methods.
    • This research highlights the potential for early immune monitoring in identifying individuals at high risk for DM 1.

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