BACKGROUND AND PURPOSE:Clopidogrel is widely used in patients after recent ischemic stroke; however, its ability to yield additional antiplatelet protection on top of aspirin has never been explored in a controlled study. To determine whether clopidogrel with aspirin (C+ASA) will produce more potent platelet inhibition than aspirin alone (ASA) in patients after ischemic stroke, we conducted the Plavix Use for Treatment of Stroke trial. METHODS:Seventy patients after ischemic stroke were randomly assigned to C+ASA or ASA groups. Platelet studies included aggregometry; cartridge-based analyzers; expression of PECAM-1, P-selectin, GP IIb/IIIa (antigen and activity), vitronectin receptor, and formation of platelet-leukocyte microparticles by flow cytometry. Platelet tests were performed at baseline and after 30 days after randomization. RESULTS: There were no deaths, hospitalizations, or serious adverse events. There were no differences in the baseline platelet characteristics between C+ASA and ASA groups, or significant changes in platelet parameters in the ASA group, except diminished collagen-induced aggregation (P=0.001). In contrast, therapy with C+ASA resulted in a significant inhibition of platelet activity assessed by ADP- (P=0.00001) and collagen-induced (P=0.02) aggregation; closure time prolongation (P=0.03), and reduction of platelet activation units with Ultegra (P=0.00001); expression of PECAM-1 (P=0.01), and GP IIb/IIIa activity with PAC-1 (P=0.02) when compared with ASA group. Therapy with C+ASA also resulted in the reduced formation of platelet-leukocyte microparticles (P=0.02). CONCLUSIONS: Treatment with C+ASA for 1 month provides significantly greater inhibition of platelet activity than ASA alone in patients after recent ischemic stroke in the frame of the small randomized trial.
RCT Entities:
BACKGROUND AND PURPOSE:Clopidogrel is widely used in patients after recent ischemic stroke; however, its ability to yield additional antiplatelet protection on top of aspirin has never been explored in a controlled study. To determine whether clopidogrel with aspirin (C+ASA) will produce more potent platelet inhibition than aspirin alone (ASA) in patients after ischemic stroke, we conducted the Plavix Use for Treatment of Stroke trial. METHODS: Seventy patients after ischemic stroke were randomly assigned to C+ASA or ASA groups. Platelet studies included aggregometry; cartridge-based analyzers; expression of PECAM-1, P-selectin, GP IIb/IIIa (antigen and activity), vitronectin receptor, and formation of platelet-leukocyte microparticles by flow cytometry. Platelet tests were performed at baseline and after 30 days after randomization. RESULTS: There were no deaths, hospitalizations, or serious adverse events. There were no differences in the baseline platelet characteristics between C+ASA and ASA groups, or significant changes in platelet parameters in the ASA group, except diminished collagen-induced aggregation (P=0.001). In contrast, therapy with C+ASA resulted in a significant inhibition of platelet activity assessed by ADP- (P=0.00001) and collagen-induced (P=0.02) aggregation; closure time prolongation (P=0.03), and reduction of platelet activation units with Ultegra (P=0.00001); expression of PECAM-1 (P=0.01), and GP IIb/IIIa activity with PAC-1 (P=0.02) when compared with ASA group. Therapy with C+ASA also resulted in the reduced formation of platelet-leukocyte microparticles (P=0.02). CONCLUSIONS: Treatment with C+ASA for 1 month provides significantly greater inhibition of platelet activity than ASA alone in patients after recent ischemic stroke in the frame of the small randomized trial.
Authors: Babikir Kheiri; Mohammed Osman; Ahmed Abdalla; Tarek Haykal; Bakr Swaid; Sahar Ahmed; Adam Chahine; Mustafa Hassan; Ghassan Bachuwa; Mohammed Al Qasmi; Deepak L Bhatt Journal: J Thromb Thrombolysis Date: 2019-02 Impact factor: 2.300
Authors: Samuel Pearce; Julian T Maingard; Hong Kuan Kok; Christen D Barras; Jeremy H Russell; Joshua A Hirsch; Ronil V Chandra; Ash Jhamb; Vincent Thijs; Mark Brooks; Hamed Asadi Journal: Clin Neuroradiol Date: 2021-03-01 Impact factor: 3.649
Authors: J C Gentric; A Biondi; M Piotin; C Mounayer; K Lobotesis; A Bonafé; V Costalat Journal: AJNR Am J Neuroradiol Date: 2013-01-24 Impact factor: 3.825
Authors: S Müller-Schunk; J Linn; N Peters; M Spannagl; M Deisenberg; H Brückmann; T E Mayer Journal: AJNR Am J Neuroradiol Date: 2008-01-25 Impact factor: 3.825