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THE INFLUENCE OF INDOLE SS-68 DERIVATIVE ON THE EXCITATION CENTER DYNAMICS IN THE SINOATRIAL NODE UNDER THE VAGUS NERVE STIMULATION

Abstract

In experiments on anaesthetized cats in the sinoatrial node (SAN), located in induced high-frequency electric field, focus glow (FG) is visualized, which upon stimulation of the vagus nerve (VN) by periodic electrical impulses undergoes significant changes, characterized by FG weakening and its migration, the emergence of pacemaker cells odd pools (PCP); bradycardia and sinus arrhythmia are also observed. Intravenous indole SS-68 derivative (50 mkg/kg) injection which is included in III antiarrhythmic class and is M2 holinoblocator, causes the increase in the FG intensity, its returning to the original location, PCP combination, bradycardia relief and sinus arrhythmia arrest. Under vagal-cardiac synchronization (VCS), caused by VN volleys of electrical impulses stimulation, FG in SAN is intensified and increases its square. PCP are combining thus causing bradycardia. SS-68 (50 mkg/kg) intravenous injection does not cause visible changes in the SAN functional state. It is suggested that the lack of SS-68 activity under the experimental conditions is masked by the processes that occur in the SAN under VCS, that requires additional specific investigations.

About the Authors

I. L. Cherednik
The Kuban State Medical University of Ministry of Health of Russian Federation
Russian Federation


S. . K Bogus
The Kuban State Medical University of Ministry of Health of Russian Federation
Russian Federation


K. F. Suzdalev
South Federal University
Russian Federation


P. A. Galenko-Yaroshevsky
The Kuban State Medical University of Ministry of Health of Russian Federation
Russian Federation


P. G. Storozhuk
The Kuban State Medical University of Ministry of Health of Russian Federation
Russian Federation


V. G. Abushkevich
The Kuban State Medical University of Ministry of Health of Russian Federation
Russian Federation


A. A. Kashkaryan
The Kuban State Medical University of Ministry of Health of Russian Federation
Russian Federation


B. S. Babayan
The Kuban State Medical University of Ministry of Health of Russian Federation
Russian Federation


A. I. Trofimenko
The Kuban State Medical University of Ministry of Health of Russian Federation
Russian Federation


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Review

For citations:


Cherednik I.L., K Bogus S., Suzdalev K.F., Galenko-Yaroshevsky P.A., Storozhuk P.G., Abushkevich V.G., Kashkaryan A.A., Babayan B.S., Trofimenko A.I. THE INFLUENCE OF INDOLE SS-68 DERIVATIVE ON THE EXCITATION CENTER DYNAMICS IN THE SINOATRIAL NODE UNDER THE VAGUS NERVE STIMULATION. Kuban Scientific Medical Bulletin. 2016;(6):135-139. (In Russ.)

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ISSN 1608-6228 (Print)
ISSN 2541-9544 (Online)