Memory Drug (fwd)

Stephen Maren maren at
Sun Nov 24 01:15:27 EST 1996


AMPA (alpha-amino-3-hydroxy-5-methyl-4-isoaxozolepropionate) receptors are
a subclass of glutamate receptors.  The AMPAkines that have been recently
been discussed in the press increase the conductance of AMPA receptors by
prolonging the mean channel open time of the AMPA receptor's channel. 
This allows presynaptically released transmitter (i.e., glutamate) to
exert an enhanced postsynaptic response.  Facilitated transmission at
"AMPAergic" synapses with has been reported to improve learning in rats
(and now memory in patients with Alzheimer's disease).  


> Date: Mon, 18 Nov 1996 14:43:43 EST
> From: Jeff Nagelbush <jnagelbu at>
> Subject: Memory Drug
> On NPR this mornig and on the CNN web pages was a discussion of the 
> new memory drug, Ampakine CX-516.  It has been shown to have 
> significant effects in rats and in humans, particularly in the 
> elderly.  It is soon to be tested on Alsheimer's patients.
> Supposedly, this works by stimulating the "so-called AMPA receptors 
> in the brain" and this improves the flow of information from one cell 
> to another.  This brief description makes little sense to me as it 
> was written and discussed and I have been unable to find out what 
> AMPA receptors are.  If anyone there can help me I would appreciate 
> it.  Thanks.
> Jeff
> Jeffrey Nagelbush
> jnagelbu at
> Social Sciences Department
> Ferris State University
> Big Rapids, MI  49307

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