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  • Title: Circulating immune complexes, insulin antibodies, and deposits of immunoglobulins in the skin in diabetes.
    Author: Josephsen PG, Permin H, Juhl F, Enk B, Svehag SE.
    Journal: Dan Med Bull; 1986 Jun; 33(3):171-4. PubMed ID: 3720367.
    Abstract:
    Sixty-five insulin-dependent diabetes mellitus (IDDM) patients at the Steno-Memorial Hospital entered the present study. Of these, 43.1 percent had one or more late diabetic complication, 19.3 percent had circulating immune complexes (CIC)--there was a tendency for CIC to be related to late diabetic complications (P = 0.1) - and 16.9 percent had elevated total S-IgG. Elevated S-IgG values were related neither to CIC, to complications, nor to IgG deposits in the skin. Three patients had elevated total S-IgM, IgD and, IgE, respectively. No patients had elevated total S-IgA. Insulin antibodies were present in 41.9 percent. They were related to neither CIC nor clinical complications. No patients had rheumatoid factors (RF) or granulocyte-specific antinuclear antibodies (ANA). 12.3 percent had a low titre of organ non-specific ANA. No relationship could be established between ANA and complications or CIC. As regards skin deposits IgG was present at the dermo-epidermal junction zone (DEJ) and/or in the dermal vessels in 75.4 percent of the patients; IgA was present in 35.4 percent; and IgM in 32.3 percent. IgD and IgE were absent in all patients. Fibrinogen deposits were found in 80 percent and complement C3 in 32.3 percent. No correlation was found between skin deposits and CIC, on one hand, or clinical complications, on the other. From the present work, we conclude that humorally mediated immunological processes are active in IDDM. However, the exact role of this activity still remains to be defined.
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