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. 1983 Jun;52(3):575–580.

The correlation between insulin antibodies and circulating immune complexes in diabetics with and without microangiopathy.

U Di Mario, L Ventriglia, M Iavicoli, K Guy, D Andreani
PMCID: PMC1536039  PMID: 6603299

Abstract

The relationship between immune complexes and insulin antibodies was evaluated in 237 insulin treated subjects with a duration of diabetes of more than 1 year. Ninety-seven diabetics were selected at random (group 1) whereas 140 according to the presence of diabetic microangiopathy (group 2). Immune complexes were evaluated by the solid phase C1q binding test in all patients and by conglutinin radioimmune assay in most of them. Insulin antibodies were determined by Christiansen's and Anderson's methods. Immune complexes as detected by the solid phase C1q method were found increased in group 1 and there was an inverse correlation between these complexes and insulin antibody levels. In group 2 patients with microangiopathy the amount of this kind of complex was significantly greater than in those without microvascular lesions and there was no correlation with insulin antibodies. Immune complexes as detected by conglutinin were found increased in group 2 patients and these were significantly correlated with the level of insulin antibodies. No increase in these immune complexes was found in patients with microangiopathy when compared with patients without microangiopathy. Insulin antibodies were not correlated with the presence of complications. Overall, immune complexes detected by C1q binding were significantly correlated with the presence of microangiopathy. In patients with high insulin antibody levels the complexes formed were not detected by C1q binding. The immune complexes detected by conglutinin are correlated with insulin antibodies, but not with the presence of microangiopathy.

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Selected References

These references are in PubMed. This may not be the complete list of references from this article.

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