Effect of Stimulation of α2-Adrenergic Receptors on Action Potential of Working Cardiomyocytes in Rat Atrium


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Abstract

The study examined the effect of clonidine hydrochloride (10—9-10—5 М) on electrical activity of working cardiomyocytes in rat right atrium. Stimulation of α2-adrenergic receptor with clonidine changed electrical activity of the heart. All tested concentrations of the agonist lengthened the action potential and decreased the firing rate of cardiomyocytes in a dose-dependent manner. The maximum effects of clonidine were observed at concentration of 10—5 М.

About the authors

T. L. Zefirov

Department of Anatomy, Physiology, and Human Health Protection, Kazan Federal University

Author for correspondence.
Email: zefirovtl@mail.ru
Russian Federation, Kazan

L. I. Faskhutdinov

Department of Anatomy, Physiology, and Human Health Protection, Kazan Federal University

Email: zefirovtl@mail.ru
Russian Federation, Kazan

N. I. Ziyatdinova

Department of Anatomy, Physiology, and Human Health Protection, Kazan Federal University

Email: zefirovtl@mail.ru
Russian Federation, Kazan

A. M. Galieva

Department of Anatomy, Physiology, and Human Health Protection, Kazan Federal University

Email: zefirovtl@mail.ru
Russian Federation, Kazan

A. L. Zefirov

Department of Normal Physiology, Kazan State Medical University

Email: zefirovtl@mail.ru
Russian Federation, Kazan, Republic of Tatarstan


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