Effect of NO Synthase Blockade on Myocardial Contractility of Hypokinetic Rats during Stimulation of β-Adrenoreceptors


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Abstract

Stimulation of β-adrenoreceptors with low (10–8 and 10–7 M) or high (10–6 M) doses of isoproterenol in hypokinetic rats treated with L-NAME (a non-selective blocker of NO synthases) decreased or increased myocardial contractility, respectively. In control rats, all examined doses of isoproterenol used under blockade of NO synthases inhibited myocardial contractility.

About the authors

R. I. Zaripova

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

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

N. I. Ziyatdinova

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

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

T. L. Zefirov

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

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


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