PaperN,N,N-trimethylsphingosine (cas 138686-73-4) modifies aggregatory response and ATP release from platelets in whole blood

Add time:09/05/2019    Source:sciencedirect.com

We investigated the influence of N,N,N-trimethylsphingosine (TMS), a potent inhibitor of protein kinase C (PKC), on whole blood aggregation and ATP release from platelets. The preincubation with TMS at 1μM for 2 min enhanced ATP release during arachidonic acid-induced aggregation. The ristocetin-induced agglutination was inhibited in a TMS concentration-dependent manner, which suggests that TMS may interact with the vWF receptor on platelets. TMS suppressed aggregatory response and ATP release from platelets after the addition of collagen. In contrast, the platelet aggregation induced by ADP and 12-O-tetradecanoylphorbol-13-acetate (TPA) was only slightly inhibited and the ATP release was not influenced after preincubation with TMS. Our results are in contrast to previous reported data, which were obtained using PRP and washed platelets.

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