Fig. 9From: Opposing presynaptic roles of BDNF and ProBDNF in the regulation of persistent activity in the entorhinal cortexBDNF and proBDNF modulate persistent activity by regulating presynaptic glutamate release in layer V of the entorhinal cortex. BDNF increases glutamate release via presynaptic TrkB activation whereas proBDNF inhibits glutamate release via presynaptic p75NTR receptors. Glutamate acts through postsynaptic Gq-coupled mGluR5 receptors, in addition to acetylcholine acting through M1 muscarinic receptors, to induce calcium entry through TRPC channels and initiation of persistent activityBack to article page