Abstract
Leukocyte adhesion to vascular endothelial cells is an essential step in the development of inflammatory diseases. We have searched for inhibitors of leukocyte-endothelial cell adhesion that could be used as anti-inflammatory drugs and found that bruceine B (0.2 μg/ml; 0.44 μM) inhibited human neutrophil or T cell adhesion to tumor necrosis factor-α (TNF) stimulated human umbilical vein endothelial cells (HUVEC). The inhibition of neutrophil adhesion to TNF-stimulated HUVEC by bruceine B was not derived from cytotoxic effects, as determined by measurement of the level of lactate dehydrogenase (LDH) activity in conditioned medium. The effect of bruceine B on neutrophil adhesion to HUVEC was not seen when the neutrophils were preincubated with bruceine B. However, inhibitory effects were evident when the HUVEC were preincubated with bruceine B. Bruceine B also inhibited neutrophil adhesion to lipopolysaccharide-stimulated HUVEC and T cell adhesion to TNF-stimulated HUVEC. These findings suggest that bruceine B may have anti-inflammatory activity.
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Utoguchi, N., Nakata, T., Cheng, H.H. et al. Bruceine B, A Potent Inhibitor of Leukocyte-Endothelial Cell Adhesion. Inflammation 21, 223–233 (1997). https://doi.org/10.1023/A:1027374321718
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DOI: https://doi.org/10.1023/A:1027374321718