α-Dendrotoxin

α-Dendrotoxin (0.1-10 μM; 25 s sustained application, 0.1-3 μM; 5 s co-application, 30-100 nM; sustained application for outward current inhibition, 100 nM-1 μM; co-application for outward current inhibition) reversibly inhibits acid-sensing ion channel (ASIC) peak currents in cultured rat dorsal root ganglion neurons with an IC₅₀ of 0.8 μM when applied in a sustained manner, and abolishes post-acid pulse transient outward currents in these neurons at nanomolar to micromolar concentrations, while co-application with acid has no effect on ASIC currents^[1].
α-Dendrotoxin (1-2 µM) increases excitability of large layer 5 pyramidal neurons from rat neocortex by hyperpolarizing the action potential firing threshold by 4-8 mV and reducing the threshold current for action potential initiation by 46%, without altering action potential half-width^[3].
α-Dendrotoxin (2 µM) inhibits 6% of the total slow potassium current in nucleated outside-out patches from somata of large layer 5 pyramidal neurons from rat neocortex^[3].

MedChemExpress (MCE) has not independently confirmed the accuracy of these methods. They are for reference only.