Atherosclerosis is an inflammatory disease. Platelet-endothelium interaction plays an important role in the pathophysiology of atherogenesis. We investigated the role of activated platelets for secretion of interleukin (IL)-1beta, monocyte chemotactic protein (MCP)-1 and macrophage inflammatory protein (MIP)-1alpha and expression of intercellular adhesion molecule (ICAM)-1 on endothelial cells. Human umbilical vein endothelial cells (HUVEC) were incubated with non-stimulated or ADP-activated platelets for 6 hr. Secretion of interleukin (IL)-1beta, MCP-1 and MIP-1alpha and surface expression of ICAM-1 were measured by ELISA and flow cytometry. In the presence of activated platelets, the secretion of IL-1beta, MCP-1, and MIP-1alpha and surface expression of ICAM-1 were significantly increased compared with non-activated platelets. The present study shows that activated platelets may contribute to expression of various inflammatory mediators on endothelial cells.
Blood Platelets/metabolism* ; Cells, Cultured ; Cells, Cultured ; Endothelium, Vascular/secretion* ; Endothelium, Vascular/cytology ; Human ; Intercellular Adhesion Molecule-1/biosynthesis ; Interleukin-1/secretion* ; Macrophage Inflammatory Protein-1/secretion* ; Monocyte Chemoattractant Protein-1/secretion* ; Platelet Activation/physiology*

Atherosclerosis is an inflammatory disease. Platelet-endothelium interaction plays an important role in the pathophysiology of atherogenesis. We investigated the role of activated platelets for secretion of interleukin (IL)-1beta, monocyte chemotactic protein (MCP)-1 and macrophage inflammatory protein (MIP)-1alpha and expression of intercellular adhesion molecule (ICAM)-1 on endothelial cells. Human umbilical vein endothelial cells (HUVEC) were incubated with non-stimulated or ADP-activated platelets for 6 hr. Secretion of interleukin (IL)-1beta, MCP-1 and MIP-1alpha and surface expression of ICAM-1 were measured by ELISA and flow cytometry. In the presence of activated platelets, the secretion of IL-1beta, MCP-1, and MIP-1alpha and surface expression of ICAM-1 were significantly increased compared with non-activated platelets. The present study shows that activated platelets may contribute to expression of various inflammatory mediators on endothelial cells.
Blood Platelets/metabolism* ; Cells, Cultured ; Cells, Cultured ; Endothelium, Vascular/secretion* ; Endothelium, Vascular/cytology ; Human ; Intercellular Adhesion Molecule-1/biosynthesis ; Interleukin-1/secretion* ; Macrophage Inflammatory Protein-1/secretion* ; Monocyte Chemoattractant Protein-1/secretion* ; Platelet Activation/physiology*