PL
Przeprowadzono testy adhezji ludzkich limfocytów T i granulocytów do komórek śródbłonka naczyniowego linii HMEC-1 stymulowanych przy użyciu polisacharydu otoczkowego (CPS), lipopolisacharydów (LPS) oraz komponentów wielocukrowych (PS) i lipidowych (lipid A) LPS. Stwierdzono, że limfocyty T spoczynkowe i aktywowane PMA oraz granulocyty przylegają do komórek endotelialnych stymulowanych za pomocą antygenów powierzchniowych B. thetaiotaomicron. Aktywność w tym procesie preparatów LPS i CPS B. thetaioitaomicron jest mniejsza od aktywności LPS E. coli 055:B5.
EN
The aim of this study was to assay the degree of human T lymphocyte and granulocyte adhesion to the vascular endothelial cells stimulated by Bacteroides thetaiotaomicron lipopolysaccharides, components of LPS and capsular polysaccharide. HMEC-1 cells were activated with bacterial preparations in concentration 10 ug/ml for 4 and 24 hours. T lymphocytes and granulocytes were isolated from peripheral blood of healthy blood donors. Thereafter, the adhesion tests of granulocytes and adhesion tests of non-activated and activated with PMA ( in concentration 10 ng/ml) T lymphocytes to the resting and stimulated vascular endothelium were performed. The number of viable cells, which adhered to the endothelium, was determined using inverted microscope (magnification 200x). The results were presented as the number of viable cells adhering to 1 mm2 of the endothelial cell culture. The obtained results indicate that granulocytes and T lymphocytes (resting and activated with PMA) adhere to the endothelial cells stimulated by B. thetaiotaomicron cell-surface antigens. B. thetaiotaomicron lipopolysaccharides and capsular polysaccharide are weaker stimulants of human leukocyte adhesion to the HMEC-1 cells than E. coli 055:B5 LPS.