Positive Chronotropic and Negative Inotropic Actions of Vasopressin in Isolated Blood-Perfused Canine Atrium
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概要
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Effects of vasopressin on SA nodal pacemaker activity and atrial contractility were investigated, using 5 isolated, blood-perfused canine atrium preparations. Vasopressin produced a dose-related positive chronotropic and negative inotropic effect, which was not influenced by treatments with an adequate dose of atropine or an adrenergic beta-blocking agent, alprenolol.From these results, it is concluded that vasopressin has a direct stimulating property on SA nodal pacemaker activity and a direct suppressive property on atrial contractility.
- International Heart Journal刊行会の論文
著者
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Chiba Shigetoshi
Departmen T Of Pharmacology Shinshu University School Of Medicine
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CHIBA Shigetoshi
Department of Pharmacology, Faculty of Medicine, University of Shinshu
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