Abstract
In the present study, we aimed to explore the effects of puerarin on vascular endothelial cell injury induced by lipopolysaccharide (LPS) and its underlying mechanisms. The cell viability and morphological changes were assessed using the cell counting kit-8 (CCK-8) assay and 4´,6-diamidino-2-phenylindole (DAPI) staining, respectively. The levels of tumor necrosis factor-alpha (TNF-α), interleukin-1β (IL-1β), monocyte/macrophage chemotactic protein-1 (MCP-1), IL-8, intercellular cell adhesion molecule-1 (ICAM-1), thrombomodulin (TM) and plasminogen activator inhibitor-1 (PAI-1) in cell culture supernatant were determined by the enzyme-linked immunosorbent assay (ELISA). The neutrophils adhesion to endothelial cells were examined by myeloperoxidase activity assay. The nuclear translocation of nuclear factor-κB p65 (NF-κB p65) was assessed by immunofluorescence analysis. Compared with the control group, LPS challenge significantly injured human umbilical vein endothelial cells (HUVECs) and increased the levels of TNF-α, IL-1β, MCP-1, IL-8, ICAM-1, TM and PAI-1 in the cell culture supernatants. The neutrophils adhesion to endothelial cells were significantly increased in LPS-challenged HUVECs. Moreover, LPS challenge increased the ...Continue Reading
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