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Abstract
The level of circulating immune complexes (CIC) is one of the important indicators characterizing the state of the body’s humoral immune response. Under the condition of excessive formation, CIC remain in the circulation for a long time, and can be deposited in various organs and vessels, initiating inflammatory
processes. Autoimmune ophthalmopathy (AO) is an autoimmune disease that is a complex lesion of the orbit tissues, accompanied by infiltration, edema and proliferation of retrobular adipose tissue, muscles, and connective tissue. AO can be occured as an independent disease, and in combination with diffuse toxic goiter (DTG) or autoimmune thyroiditis. It is assumed that the pathogenetic mechanisms of the progression of autoimmune ophthalmopathy may be associated with the activation of autoimmune processes in orbital tissues against the background of a high level of TSH receptor antibodies (TRAbs). The aim was to study the content of CICs in patients with DTG complicated by autoimmune ophthalmopathy. Material and methods. CIC were determined in 24 patients with DTG, including 19 women and 5 men aged 22 to 67 years (mean value (47.2±2.8), and in 29 patients with DTG (19 women and 10 men) complicated by AO at the age from 18 till 71 years (mean value 46.1±2.5. The control group consisted of 16 donors of the corresponding age and gender. Results. In patients with DTG of both groups the CIC content is significantly higher than the indicators of the control group: (92.7±6.1 conventional units) and (113.5±6.7 conventional units) versus (67.7±6.1 conventional units), (p<0.05), respectively. In the group of patients with DTG complicated by AO, the number of patients with high CIC values was significantly higher than in the group of patients with DTG. High CIC values (100 conventional units/ml and more) were found in 17 out of 29 (58.6%) patients with DTG, complicated by AO, while there were 7 out of 24 (29.2%) in patients with DTG. Conclusions. The increased CIC production in patients with DTG complicated by AO is probably the result of activation of the humoral immunity and confirmation of the genesis of the autoimmune disease. In addition, a high content of CIC may indicate a dysfunction in the genesis of immune disorders in particular, about dysfunction of the reticuloendothelial system, which is responsible for their elimination and excretion.
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