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lüll CVT-510: a selective A1 adenosine receptor agonist Cheung JW; Lerman BBCardiovasc Drug Rev 2003[Win]; 21 (4): 277-92Adenosine is an endogenous nucleoside that has potent antiarrhythmic effects on paroxysmal supraventricular tachycardia (PSVT) due to its negative dromotropic effects on the atrioventricular node. In addition to its electrophysiologic effects, adenosine has important effects on vascular smooth muscle cells, inflammatory cells, the central nervous system, and the kidney. Four known adenosine receptor subtypes (A1, A2A, A2B, and A3) mediate the pleiotropic effects of adenosine in humans. These receptors are coupled to a wide range of second messenger cascades. Activation of the A1 adenosine receptor accounts for the negative chronotropic and dromotropic effects of adenosine, whereas A2A, A2B and A3 adenosine receptor activation are responsible for such effects as coronary vasodilation, bronchospasm, inhibition of platelet aggregation, and neuronal stimulation. Elucidation of the specific properties of each of the adenosine receptor subtypes has led to the development of selective ligands as potential therapeutic agents. CVT-510, N-(3(R)-tetrahydrofuranyl)-6-aminopurine riboside, was developed as a selective A1 adenosine receptor agonist that specifically targets the atrioventricular node for termination of PSVT. Preliminary clinical trials have shown that CVT-510 is effective in terminating PSVT and eliminating many of the undesirable adverse effects of adenosine. CVT-510 is also being explored as a potential agent for controlling the ventricular rate of atrial fibrillation and flutter.|*Adenosine A1 Receptor Agonists[MESH]|*Adenosine/*analogs & derivatives/pharmacokinetics/*pharmacology/therapeutic use[MESH]|*Anti-Arrhythmia Agents/pharmacokinetics/pharmacology/therapeutic use[MESH]|*Furans/pharmacokinetics/*pharmacology/therapeutic use[MESH]|Animals[MESH]|Atrial Fibrillation/*drug therapy[MESH]|Blood Pressure/drug effects[MESH]|Heart Rate/drug effects[MESH]|Humans[MESH]|Receptor, Adenosine A1/physiology[MESH]|Tachycardia, Supraventricular/*drug therapy[MESH] |