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Live Porphyromonas gingivalis enhanced the expression of intercellular adhesion molecule-1 (ICAM-1) on the surface of human umbilical vein endothelial cells (HUVECs) in a bacterial dose-dependent manner. Inactivation of P. gingivalis by ultraviolet (UV), heat (56C, 30 min), or sonication did not alter its stimulatory activity. ICAM-1 expression began to increase at 4 h after stimulation, reached a...
The proliferation of human umbilical vein endothelial cells (HUVECs) cocultivated with live B. henselae was enhanced in a bacterial dose-dependent manner, and the stimulatory effect was specific to vascular endothelial cells. The inactivation of B. henselae by UV or heat treatment abolished its stimulatory activity, suggesting that live bacteria is necessary for the growth stimulation effect. To investigate...
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