Brain-penetrant class I ampakine with AMPA receptor (AMPAR; iGluR) positive allosteric modulator (PAM) activity both in vitro and in vivo.
CX614 (BDP-37) is a brain-penetrant class I ampakine (benzoxazine subgroup of benzamide-type) with AMPA receptor (AMPAR; iGluR) positive allosteric modulator (PAM) activity via targeting a binding site shared by cyclothiazide (CTZ), but distinct from that of GYKI 52466. CX614 enhances field excitatory postsynaptic potentials (amplitude & duration) in rat hippocampal slices and autaptically evoked excitatory postsynaptic currents in neuronal cultures (EC50 of 20-40 μM) by blocking desensitization and slowing deactivation of responses to glutamate. CX614 is also widely employed for studying AMPAR-mediated physiological responses in vivo (1-10 mg/kg n rats and mice via i.p.).
Four positive modulators of AMPA-type glutamate receptors (cyclothiazide, CX614, LY404187 and S18986-1) given in acute or chronic manner exerted a neuroprotective effect in lesions induced in postnatal day 5 (P5) mice by intracerebral injection of ibotenate, an NMDA agonist. The
The Journal of neuroscience : the official journal of the Society for Neuroscience, 33(30), 12218-12228 (2013-07-26)
The neural mechanisms that support the late postnatal development of spatial navigation are currently unknown. We investigated this in rats and found that an increase in the duration of AMPAR-mediated synaptic responses in the hippocampus was related to the emergence
It has been proposed that glutamatergic and dopaminergic systems are functionally opposed in their regulation of striatal output. The present study tested the effects of drugs that enhance AMPA-receptor-mediated glutamatergic transmission (ampakines) for their effects on dopamine-related alterations in cortical
Among neurobiological mechanisms underlying antidepressant properties of ketamine, structural remodeling of prefrontal and hippocampal neurons has been proposed as critical. The suggested mechanism involves downstream activation of α-amino-3-hydroxy-5-methyl-4-isoxazolepropionic acid (AMPA) receptors, which trigger mammalian target of rapamycin (mTOR)-dependent structural plasticity
Transmembrane AMPA receptor regulatory proteins (TARPs) govern AMPA receptor cell surface expression and distinct physiological properties including agonist affinity, desensitization and deactivation kinetics. The prototypical TARP, STG or γ2 and TARPs γ3, γ4, γ7 and γ8 are all expressed to
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