نتایج جستجو برای: hyperpolarization activiated current if sino atrial node
تعداد نتایج: 1634876 فیلتر نتایج به سال:
Whole-cell and Perforated Patch-clamp Recordings from Acutely-isolated Murine Sino-atrial Node Cells
Atrial redirection surgery, brought into common use by Mustard’s modification of the Senning procedure, transformed the natural history of dextro-transposition of the great arteries (dTGA) from a 90% one year mortality to a 90% 1 year survival(1). Although rendering the infant acyanotic with excellent functional capacity, the morphological right ventricle(sRV) is required to support the systemi...
The pacemaker activity of the S-A node cell was explained by reconstructing the pacemaker potential using a Hodgkin-Huxley type mathematical model which was based on the reported voltage clamp data. In this model four dynamic currents, the sodium current iNa, the slow inward current, is, the potassium current, iK, and the hyperpolarization-activated current, ih, in addition to a time-dependent ...
This study evaluated the chronotropic and inotropic responses to glucagon in spontaneously beating isolated right atria of rat heart. For comparison, we also investigated the effects resulting from stimulating β-adrenoceptors with isoproterenol in this tissue. Isoproterenol increased both atrial frequency and contractility but glucagon only enhanced atrial rate. The transcript levels of glucago...
Introduction: Recent evidence has indicated that statins can reduce the incidence of both supraventricular and ventricular arrhythmias with various mechanisms. The primary goal of the present study was to determine direct protective role of simvastatin in modifying concealed conduction and the zone of concealment in a simulated model of atrial fibrillation (AF) in an isolated atrioventricula...
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