The cytotoxic effect of lipopolysaccharide (LPS) on cultivated bovine aorti
c endothelial cells was determined. This LPS-induced cytotoxicity was atten
uated by diosmin, That means, the IC50-value of LPS in the combination with
8 mu mol/l diosmin was shifted from 31 to 70 ng/ml in a concentration depe
ndent manner. As a hypothesis it was suggested, that the inhibition of LPS-
induced cytotoxicity in bovine aortic endothelial cell cultures by diosmin
could be probably mediated via inhibition of tyrosine kinases.