“ Genistein , an inhibitor of tyrosine protein kinase, completely inhibited NGF induced PAI-1 mRNA in the presence of 100 μM. Wortmannin, a potent and specific inhibitor of phosphatidylinositol 3-kinase (PI-3 kinase), decreased induction of PAI-1 mRNA level at doses of ≥ 10-7 M.”