Control of apoptosis (apo) is very important for diagnosis, prognosis and treatment of rheumatoid arthritis (RA). Recently, we found that an appearance of specific cell surface GC is attributable to apo and developed lectin-induced agglutination test for apo evaluation. The aim of current study was to estimate changes in surface GC expression in peripheral blood lymphocytes (PBL) of normal healthy donors (NHD) and patients with RA, measured by cell agglutination with the galactose-specific VAA lectin and by lectin-cytochemical analysis. In parallel, these changes in apo incidence were evaluated by the detection of cells with sub-G1 DNA content. The data revealed an increased level of apo in lymphocytes of RA patients (n = 29), and increased cell surface GC expression in lymphocytes of NHD (n = 18). A correlation (R = 0.708) was observed between these two indicators. Specific changes in cell surface GC can be effectively used for the detection of apo cells in RA and other autoimmune disorders.
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