Effects of Cilostazol on Platelet Activation in Coronary Stenting Patients Who Already Treated with Aspirin and Clopidogrel.
Background : A recent study has shown that triple anti-platelet therapy (cilostazol+clopidogrel+aspirin) resulted in a significantly lower restenosis rate after coronary stenting than did conventional therapy (clopidogrel+aspirin). However, the anti-platelet effects of cilostazol, when combined with clopidogrel and aspirin, have not been evaluated. Methods : Low dose cilostazol (50 mg/BID) was given to 47 patients who had already been taking clopidogrel (75 mg/day) and aspirin (100 mg/day) for more than 1 month subsequent to coronary stenting due to AMI and unstable angina. Markers of platelet activation, P-selectin and activated GPIIb/IIIa on platelets, were measured at baseline and 2 weeks after cilostazol treatment. We empirically divided patients into tertiles (low, n=16; moderate, n=14; high group, n=17), according to the baseline P-selectin expression. We then performed a comparative assessment of the anti-platelet effects of cilostazol at baseline and after 2 weeks of cilosatzol administration. Results : P-selectin was significantly decreased after 2 weeks of cilostazol treatment in total patients (n=47, 3.2±2.4% to 2.0±1.9%, p = 0.03). This inhibition of P-selectin expression was mainly achieved in the moderate and high P-selectin groups (low group; 1.4±0.5 to 1.9±1.3%, p >0.05, moderate group; 2.5±0.3 to 1.3±0.3%, p p p Conclusion : Our data demonstrated that cilostazol treatment in addition to conventional anti-platelet therapy provides more effective suppression of platelet P-selectin expression in patients with relatively high platelet activity.
- PubMed Central : 저널 > https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4531578
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