To determine activated T cell adhesion level to extracellular matrix (ECM) in non‐pregnant women with a history of recurrent spontaneous abortions (RSA). In addition, to evaluate a small‐dose intravenous immunoglobulin (IVIG) therapy influences on T cell adhesion to ECM.
 Phytohemaglutinin (PHA) or phorbol myristate acetate (PMA) activated T cell adhesion to the following extracellular matrix proteins: collagen IV, fibronectin and elastin were studied in women with the history of RSA. In addition, IVIG immunotherapy influence on T cell adhesion was studied. Normal T cells adhesion values were established in non‐pregnant healthy women with the previous successful pregnancy outcome and in normal healthy pregnant women.
 PHA activated T cell adhesion to collagen IV (P=0.04), fibronectin (P=0.0003) nad elastin (P=0.02) were significantly higher in women with the history of RSA when compared to non‐pregnant healthy women wit the previous successful pregancy outcome. IVIG immunotherapy normalized the T cell adhesion level and favored a successful pregnancy.
 Increased T cell adhesion to collagen IV, fibronectin and elastin characterize women with the history of RSA. Decreased T cell adhesion to the main extracellular matrix components of human placenta may underlie possible effect of IVIG action.