Blood stroke volume in rats aging 21 and 56 days decreased during β-adrenoceptor blockade with propranolol, but increased again by the 15th minute after treatment. Suprathreshold stimulation of the stellate ganglion decreased ...

© 2015 Elsevier Ltd. Neuropeptide Y (NPY) playsa trophic role in the nervous and vascular systems and incardiac hypertrophy. However, there i s no report concerning the expression of NPY and its receptors in the heart ...

In all examined age groups of rats, the threshold amplitude of stellate ganglion stimulation is higher for the positive chronotropic effect than for the inotropic effect. The stimulation produced a more pronounced effect ...

© 2019, Springer Science+Business Media, LLC, part of Springer Nature. The effects of neuropeptide Y (10—9-10—6 M) on electrical activity of right atrial cardiomyocytes of rats aging 7, 21, and 100 days were examined in ...

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 ...

© 2017, Springer Science+Business Media New York.Selective agonist (Leu(31)Pro(34)NPY) and blocker (BIBP-3226) of NPY1 receptors were used to determine the type of NPY receptors involved in myocardial contraction. Experiments ...

The effect of exogenous ATP and its analogs on heart function was studied in 14-100-day-old rats. Extracellular purines had a positive chronotropic effect on the heart. Intravenous administration of exogenous ATP and its ...

Stable agonist of P2 receptors 2-methylthio-ATP and selective antagonists of P2X and P2Y receptors PPADS and reactive blue-2 were used for evaluation of the role of P2 receptors in positive contractile reaction of atrial ...

© 2016, International Journal of Pharmacy and Technology. All rights reserved.ATP and neuropeptide Y are present in central and peripheral nervous systems. Being in neurons in conjunction with noradrenaline and acetylcholine ...