Title: The electrophysiological effects of acetylcholine in single human atrial cells
Authors: Heidbuchel, Hein ×
Vereecke, Johan
Carmeliet, Edward #
Issue Date: May-1988
Series Title: Journal of Molecular and Cellular Cardiology. vol:19 issue:12 pages:1207-19
Abstract: Single cells were isolated from human atria. The ionic currents in these cells were measured using the whole cell clamp technique. Time-dependent currents during depolarizing clamp steps can be described as due to Ca current and transient outward current. Time-dependent inward currents were seen during hyperpolarizing voltage steps. These currents are carried by the inward rectifier iK1, while in some cells also an if pacemaker current is present. The effect of acetylcholine was investigated at potentials negative to -50 mV. Acetylcholine induces an inwardly rectifying K current. The acetylcholine-induced current is different from iK1 in kinetics and Ba-sensitivity. The effect of acetylcholine decreases in time due to desensitization. The electrical response of the human atrial cells to acetylcholine is qualitatively similar to the effect of acetylcholine in guinea-pig atrial cells.
ISSN: 0022-2828
Publication status: published
KU Leuven publication type: IT
Appears in Collections:Cardiology
Physiology Section (-)
Laboratory of Molecular and Cellular Signaling
Department of Cellular and Molecular Medicine - miscellaneous
× corresponding author
# (joint) last author

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