Comparison of vascular responses of isolated, perfused simian and canine coronary arteries to adrenergic agonists. 1986

T Nakane, and S Chiba

The vascular responses of the isolated, perfused simian left circumflex coronary arteries to adrenergic agonists were compared to those of canine coronary arteries in isolated, perfused preparations. Norepinephrine and epinephrine produced only vasoconstriction in monkey arteries in contrast to vasoconstrictor, vasodilator and biphasic responses of canine coronary arteries. Isoproterenol induced a dose-dependent vasodilatation. Salbutamol, a selective beta 2-agonist, produced either a slight vasodilatation or no response. Phenylephrine, a selective alpha 1-agonist, usually caused a marked vasoconstriction in a dose-related manner in both preparations. Xylazine and clonidine, selective alpha 2-agonists, caused a slight vasoconstriction in low doses, but these two agonists relaxed both preparations in high doses. These observations suggest that adrenoceptor subtypes may be mainly alpha-1 and beta-1 in the large coronary arteries of monkeys and dogs and that the alpha-adrenoceptor is predominant in simian large coronary arteries.

UI MeSH Term Description Entries
D008251 Macaca A genus of the subfamily CERCOPITHECINAE, family CERCOPITHECIDAE, consisting of 16 species inhabiting forests of Africa, Asia, and the islands of Borneo, Philippines, and Celebes. Ape, Barbary,Ape, Black,Ape, Celebes,Barbary Ape,Black Ape,Celebes Ape,Macaque,Apes, Barbary,Apes, Black,Apes, Celebes,Barbary Apes,Black Apes,Celebes Apes,Macacas,Macaques
D008297 Male Males
D003331 Coronary Vessels The veins and arteries of the HEART. Coronary Arteries,Sinus Node Artery,Coronary Veins,Arteries, Coronary,Arteries, Sinus Node,Artery, Coronary,Artery, Sinus Node,Coronary Artery,Coronary Vein,Coronary Vessel,Sinus Node Arteries,Vein, Coronary,Veins, Coronary,Vessel, Coronary,Vessels, Coronary
D004285 Dogs The domestic dog, Canis familiaris, comprising about 400 breeds, of the carnivore family CANIDAE. They are worldwide in distribution and live in association with people. (Walker's Mammals of the World, 5th ed, p1065) Canis familiaris,Dog
D005260 Female Females
D000322 Adrenergic Agonists Drugs that bind to and activate adrenergic receptors. Adrenomimetics,Adrenergic Agonist,Adrenergic Receptor Agonist,Adrenergic Receptor Agonists,Receptor Agonists, Adrenergic,Agonist, Adrenergic,Agonist, Adrenergic Receptor,Agonists, Adrenergic,Agonists, Adrenergic Receptor,Receptor Agonist, Adrenergic
D000818 Animals Unicellular or multicellular, heterotrophic organisms, that have sensation and the power of voluntary movement. Under the older five kingdom paradigm, Animalia was one of the kingdoms. Under the modern three domain model, Animalia represents one of the many groups in the domain EUKARYOTA. Animal,Metazoa,Animalia
D013045 Species Specificity The restriction of a characteristic behavior, anatomical structure or physical system, such as immune response; metabolic response, or gene or gene variant to the members of one species. It refers to that property which differentiates one species from another but it is also used for phylogenetic levels higher or lower than the species. Species Specificities,Specificities, Species,Specificity, Species
D014661 Vasoconstriction The physiological narrowing of BLOOD VESSELS by contraction of the VASCULAR SMOOTH MUSCLE. Vasoconstrictions
D014664 Vasodilation The physiological widening of BLOOD VESSELS by relaxing the underlying VASCULAR SMOOTH MUSCLE. Vasodilatation,Vasorelaxation,Vascular Endothelium-Dependent Relaxation,Endothelium-Dependent Relaxation, Vascular,Relaxation, Vascular Endothelium-Dependent,Vascular Endothelium Dependent Relaxation

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