Title : Inhibition of platelet activation by tyrosine kinase inhibitors.

Pub. Date : 1992 Sep 1

PMID : 1382425






4 Functional Relationships(s)
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1 Protein tyrosine kinase (PTK) blockers (tyrphostins) inhibit in a dose-dependent fashion thrombin-induced aggregation and serotonin release with IC50 values in the 10-35 microM concentration range. Tyrphostins coagulation factor II, thrombin Homo sapiens
2 Tyrphostins decreased [32P]phosphatidic acid production induced by thrombin, although never by more than 50%, and only delayed the peak of diacylglycerol, suggesting that phospholipase C was still activated. Tyrphostins coagulation factor II, thrombin Homo sapiens
3 Tyrphostins inhibited the thrombin-elicited early phosphorylation of p43 and p20, substrates for protein kinase C (PKC) and myosin light chain kinase, respectively, at short times of activation. Tyrphostins coagulation factor II, thrombin Homo sapiens
4 The ability of tyrphostins to inhibit phosphorylation of p43 and p20 when induced by thrombin but not when induced by PMA confirms that PTKs may be involved subsequent to PKC activation. Tyrphostins coagulation factor II, thrombin Homo sapiens