AIM: In this study, the effect of specific or selective adsorption of inflammatory mediators on endothelial activation was assessed. METHODS: Conditioned medium was obtained by stimulation of monocytic THP-1 cells with lipopolysaccharide and treated either with an adsorbent specific for tumour necrosis factor-α or with an albumin-coated polystyrene-divinylbenzene copolymer which selectively binds a range of cytokines. Thereafter, the conditioned medium was applied to endothelial cells in culture. RESULTS: Adsorption of inflammatory mediators resulted in significantly decreased endothelial cell activation, as shown by reduced interleukin (IL)-6 and IL-8 secretion from endothelial cells as well as reduced surface expression of the adhesion molecules intercellular adhesion molecule-1 and E-selectin. The effect was more pronounced the earlier the mediator modulation was performed. CONCLUSION: Adsorptive modulation of inflammatory mediators dampens endothelial cell activation and may thus be beneficial as supportive therapy in sepsis.
AIM: In this study, the effect of specific or selective adsorption of inflammatory mediators on endothelial activation was assessed. METHODS: Conditioned medium was obtained by stimulation of monocytic THP-1 cells with lipopolysaccharide and treated either with an adsorbent specific for tumour necrosis factor-α or with an albumin-coated polystyrene-divinylbenzene copolymer which selectively binds a range of cytokines. Thereafter, the conditioned medium was applied to endothelial cells in culture. RESULTS: Adsorption of inflammatory mediators resulted in significantly decreased endothelial cell activation, as shown by reduced interleukin (IL)-6 and IL-8 secretion from endothelial cells as well as reduced surface expression of the adhesion molecules intercellular adhesion molecule-1 and E-selectin. The effect was more pronounced the earlier the mediator modulation was performed. CONCLUSION: Adsorptive modulation of inflammatory mediators dampens endothelial cell activation and may thus be beneficial as supportive therapy in sepsis.