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  • Title: Aggregation of human blood platelets in the presence of the pyridoindole stobadine.
    Author: Jancinová V, Nosál R, Danihelová E.
    Journal: Life Sci; 1999; 65(18-19):1983-6. PubMed ID: 10576450.
    Abstract:
    The antiarrhythmic and cardioprotective drug stobadine, possessing antioxidant and neuroprotective properties, was studied as to its in vitro effect on aggregation of human blood platelets. Pretreatment of platelets with stobadine for 30 s inhibited stimulated platelet aggregation in a dose-dependent way. Depending on the aggregation stimulus used, the minimal effective concentrations of the drug were 1 micromol/l (adrenaline), 200 micromol/l (ADP), and 1,000 micromol/l (PMA). Aggregation induced with thrombin or Ca2+-ionophore A23187 was not changed in the presence of stobadine even in the concentration of 1,000 micromol/l. Addition of stobadine 30 s after adrenaline was also effective and terminated aggregation (100 and 1,000 micromol/l) or prolonged onset of its second phase (10 micromol/l). The presented experiments showed stobadine as a potent inhibitor of adrenaline-induced aggregation, indicating its involvement in the observed antithrombotic and cytoprotective activity.
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