Autoimmune processes take place during an acute phase of brain injury as well as during chronic vascular diseases. Cryoglobulinemia is a nonspecific marker of long-term stimulation of the immune system which reflects duration of autoimmune sensitization. It is characterized by production of abnormal temperature-dependent immunoglobulins named cryoglobulins. The highest cryoglobulinemia was found in patients with atherothrombotic stroke that corresponds to the results of previous studies reporting the greatest level of neurospecific antibodies during slow atherothrombosis development. It is shown that cryoglobulinemia is an important factor in pathogenesis of stroke which contributes to microcirculatory and hemorheological disorders, increases blood viscosity and results in the development of immunocomplex endovasculitis of small brain blood vessels in the ischemic lesion.
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