title: Haemodynamic effects of adenosine-5'-carboxylic acid-amide in the anaesthetized dog during normal respiration and hypercapnic acidosis.
abstract: Adenosine-5'-carboxylic acid-amide (1 mug/kg/min) and adenosine (500 mug/kg/min), given in a 10-min infusion to anaesthetized dogs, produced qualitatively and quantitatively comparable cardiovascular effects, namely a marked increase in coronary blood flow and a generalized vasodilation, concomitantly with an increase in heart rate, left ventricular dp/dt, heart work, myocardial oxygen consumption, and pulmonary blood pressure; the pulmonary vascular resistance remained unchanged. Hypercapnic acidosis enhanced the coronary dilator effect of both compounds. These results indicate that adenosine and adenosine-5'-carboxylic acid-amide act at the same receptor sites.
mesh_terms: D000138:Acidosis / Q000503:physiopathology*; D000241:Adenosine / Q000031:analogs & derivatives* / Q000494:pharmacology; D000818:Animals; D002264:Carboxylic Acids / Q000494:pharmacology*; D003326:Coronary Circulation / Q000187:drug effects; D003864:Depression, Chemical; D004285:Dogs; D006439:Hemodynamics / Q000187:drug effects*; D006935:Hypercapnia / Q000503:physiopathology*; D009206:Myocardium / Q000378:metabolism; D010101:Oxygen Consumption / Q000187:drug effects; D011652:Pulmonary Circulation / Q000187:drug effects
chemical_list: D002264:Carboxylic Acids; D000241:Adenosine