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  • Title: Circulating IgG antibody to protamine in patients treated with protamine-insulins.
    Author: Kurtz AB, Gray RS, Markanday S, Nabarro JD.
    Journal: Diabetologia; 1983 Oct; 25(4):322-4. PubMed ID: 6196244.
    Abstract:
    Sera from patients with different types of protamine-insulin were assayed for IgG antibody to protamine. A high prevalence of circulating antibody was found in patients treated with either bovine isophane insulin (26 out of 28 patients; 26 of whom also had antibodies to insulin), or bovine protamine zinc insulin (27 out of 30 patients; all 30 had antibodies to insulin). In sera from 24 patients treated with highly purified porcine isophane insulin, protamine antibody was detected in nine; circulating insulin-antibody was detected in 12 patients, eight of whom had protamine-antibody; in the 12 patients with no detectable antibody to insulin, antibody to protamine was detected in only one (x2 = 8.7, p less than 0.01). This relationship between insulin and protamine antigenicity is of interest as it suggests that the protamine-insulin complex is itself immunogenic.
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