Orally effective CVS-1123 prevents coronary artery thrombosis in the conscious dog.
Orally effective CVS-1123 prevents coronary artery thrombosis in the conscious dog.
复制标题
口服有效的 CVS-1123 可预防清醒狗的冠状动脉血栓形成。
DOI：
10.1161/01.cir.94.7.1705
复制
发表时间：
1996
期刊：
影响因子：
37.8
通讯作者：
Lucchesi,BR
中科院分区：
文献类型：
--
作者：
Cousins,GR;Friedrichs,GS;Sudo,Y;Rebello,SS;Rote,WE;Vlasuk,GP;Nolan,TG;Mendoza,C;Lucchesi,BR
BackgroundWe examined the oral efficacy of a direct thrombin inhibitor, CVS-1123 [(CH3CH2CH2)2-CH-CO-Asp(OCH3)-Pro-Arg-CHO; MW, 575]. The object was to determine whether thrombin inhibition could reduce the incidence of occlusive coronary artery thrombosis in response to arterial wall injury.Methods and ResultsArterial wall injury was induced in conscious dogs by a 150-μA anodal current applied to the intimal surface of the circumflex coronary artery 30 minutes after oral CVS-1123 (20 mg/kg every 8 hours for three doses; n=11) or placebo containing diluent (n=10). Dogs were monitored for 8 hours and at 24 hours. The coronary artery remained patent for 24 hours in 8 of 11 CVS-1123–treated dogs. All dogs (n=10) in the placebo group developed a sustained, occlusive arterial thrombus. Two hours after the initial oral dose, the plasma CVS-1123 concentration was 13±1 μg/mL, reaching a maximum of 15±1 μg/mL after the second dose and 4.4±0.5 μg/mL at 24 hours. Ex vivo platelet aggregation to γ-thrombin was inhibited and activated partial thromboplastin time was increased after treatment with CVS-1123 (P<.05).ConclusionsThe direct thrombin inhibitor CVS-1123 is effective after oral administration in reducing the incidence of primary thrombus formation in an experimental model of arterial wall injury. Thrombin-specific inhibitors, such as CVS-1123, may be alternative antithrombotic agents in clinical settings in which heparin-associated thrombosis is a complicating factor or when long-term anticoagulation is required.
