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  • Title: Insulin autoantibodies as determined by competitive radiobinding assay are positively correlated with impaired beta-cell function--the Ulm-Frankfurt Population Study.
    Author: Yassin N, Seissler J, Glück M, Boehm BO, Heinze E, Pfeiffer EF, Scherbaum WA.
    Journal: Klin Wochenschr; 1991 Oct 18; 69(16):736-41. PubMed ID: 1762378.
    Abstract:
    Out of a random population of 4208 non-diabetic pupils without a family history of Type I diabetes 44 (1.05%) individuals had islet cell antibody (ICA) levels greater or equal to 5 Juvenile Diabetes Foundation (JDF) units. 39 of these ICA-positives could be repeatedly tested for circulating insulin autoantibodies (CIAA) using a competitive radiobinding assay. The results were compared with the insulin responses in the intravenous glucose tolerance tests (IVGTT) and with HLA types. Six pupils were positive for CIAA. All of them had complement-fixing ICA, and 5 of them were HLA-DR4 positive. Three of the 6 showed a first-phase insulin response below the first percentile of normal controls. Our data indicate that in population-based studies CIAA can be considered as a high risk marker for impaired beta-cell function in non-diabetic ICA-positive individuals.
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