[Effect of magnesium ions on the functional state of postsynaptic membrane by modulation of the level of non-quantal secretion of the mediator].


The role of non-quantal secretion (NS) of acetylcholine (ACh) in shortening of miniature end-plate currents (MEPC) after initial prolongation of MEPC due to acetylcholinesterase (AChE) inhibition was studied in the mouse diaphragm muscle under the voltage clamp conditions. Elevation of NS level by removal of magnesium ions from solution accelerated the… (More)