Interaction of adrenergic and purinergic receptors in the regulation of rat myocardial contractility in postnatal ontogeny

Interaction of adrenergic and purinergic receptors in the regulation of rat myocardial... β-Adrenergic receptor agonist isoproterenol and purinergic receptor agonist 2-methylthio-ATP have a positive effect on the myocardial contractile force and show different efficiencies depending on the age of animals. The maximum inotropic effect of agonists on the ventricular myocardial contractility was observed in 21-day-old rat pups. The study of a combined effect of isoproterenol and 2-methylthio-ATP showed that an increase in the sympathetic regulatory effects on the heart of 21-day-old animals, against the background of a high functional activity of β-adrenergic receptors and P2X receptors of the heart, a combined administration of the agonists led to a mutually complementing effect of an increase in the myocardial contractility. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Russian Journal of Developmental Biology Springer Journals

Interaction of adrenergic and purinergic receptors in the regulation of rat myocardial contractility in postnatal ontogeny

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Publisher
Springer US
Copyright
Copyright © 2013 by Pleiades Publishing, Inc.
Subject
Life Sciences; Developmental Biology; Animal Anatomy / Morphology / Histology
ISSN
1062-3604
eISSN
1608-3326
D.O.I.
10.1134/S1062360413060027
Publisher site
See Article on Publisher Site

Abstract

β-Adrenergic receptor agonist isoproterenol and purinergic receptor agonist 2-methylthio-ATP have a positive effect on the myocardial contractile force and show different efficiencies depending on the age of animals. The maximum inotropic effect of agonists on the ventricular myocardial contractility was observed in 21-day-old rat pups. The study of a combined effect of isoproterenol and 2-methylthio-ATP showed that an increase in the sympathetic regulatory effects on the heart of 21-day-old animals, against the background of a high functional activity of β-adrenergic receptors and P2X receptors of the heart, a combined administration of the agonists led to a mutually complementing effect of an increase in the myocardial contractility.

Journal

Russian Journal of Developmental BiologySpringer Journals

Published: Nov 27, 2013

References

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