Acetylcholine and the embryonic heart.
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Acetylcholine↗
Biomedical subjects
E Coraboeuf
Publications and source records attributed to E Coraboeuf.
Release of acetylcholine by chick embryo heart before innervation.
1. In chick embryo hearts, 3-day-old and not yet innervated, repetitive direct stimulation causes a transitory inhibition of the spontaneous rhythm.2. The degree of post-stimulation inhibition depends on the frequency and duration of the artificial stimulation and on the concentration of K and Ca ions in the extracellular solution.3. After treatment with atropine (10(-5) g/ml.) post-stimulation inhibition is no longer observed. The spontaneous rhythm is accelerated by atropine. The findings therefore suggest that an ACh-like substance is released from the non-innervated embryonic heart during activity.4. By use of the dorsal muscle of the leech for biological assay the liberation of an ACh-like substance from the non-innervated embryonic heart was confirmed.
Acetylcholine↗
Effect of ionic concentration changes on membrane potential of perfused rat liver.
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Animals↗
[Influence of desynchronization and resynchronization on cardiac contraction and post-extrasystolic potentiation].
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Animals↗
Membrane potential of perfused and isolated rat liver.
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Animals↗
[Myocardial contraction and refractory period. Study in rabbits and dogs, in normal conditions and partial depolarization].
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Animals↗
Existence and role of a slow inward current during the frog atrial action potential.
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Action Potentials↗
Effects of adrenaline on membrane inward currents during the cardiac action potential.
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Action Potentials↗
[Electrophysiological analysis of myocard membrane properties during the plateau of the action potential, existence of a slow inward current in solutions without divalent ions].
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Action Potentials↗
Some considerations about the cardiac action potential plateau.
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Action Potentials↗
Lacticodehydrogenase release from perfused rat heart under the effect of abnormal media.
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Acetylcholine↗
[Movements of potassium and calcium at the level of myocardial tissue (perfused mammalian ventricle) at different pH].
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Action Potentials↗
[Inactivation of the calcium-sodium current during cardiac action potential].
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Action Potentials↗
[Actions of some ions and inhibitors of membrane permeability on the human auricular action potential].
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Action Potentials↗
[Effects of adrenaline on the transmembrane incoming currents during cardiac activity].
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Action Potentials↗
[Liberation of acetylcholine by the embryonic heart of chickens before the innervation stage].
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Acetylcholine↗
[Electrophysiologic aspects of automatism of the ventricular myocardium in the chick embryo].
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Animals↗
[Effects of the variation of pH on the membrane polarization of isolated and perfused rat liver].
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Animals↗