The mechanisms underlying the antiarrhythmic action of compound trihydrochloride N1-(2,3,4-trimethoxy)-N2-{2-[(2,3,4-trimethoxybenzyl)amino]ethyl}-1,2-ethane-diamine (code ALM-802) were studied in vitro. The experiments were performed on a culture of rat hippocampal neurons. The electrical activity of neurons was recorded by the patch-clamp method in the whole cell configuration. It is shown that the compound ALM-802 effectively blocks potential-dependent Na+ and K+ channels and does not affect the activity of potential-dependent Ca2+ channels. The inhibition of currents through these channels is dose-dependent; the IC50 of Na+ and K+ channels were 94±4 and 67±3 μM, respectively. These findings indicate that compound ALM-802 combines the properties of class I and class III antiarrhythmic agents according to the Vaughan-Williams classification.
Keywords: Ca2+ channels; K+ channels; Na+ channels; compound ALM-802; patch-clamp.
© 2023. Springer Science+Business Media, LLC, part of Springer Nature.