The APP in C-terminal domain alters CA1 neuron firing (Pousinha et al 2019)

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"The amyloid precursor protein (APP) is central to AD pathogenesis and we recently showed that its intracellular domain (AICD) could modify synaptic signal integration. We now hypothezise that AICD modifies neuron firing activity, thus contributing to the disruption of memory processes. Using cellular, electrophysiological and behavioural techniques, we showed that pathological AICD levels weakens CA1 neuron firing activity through a gene transcription-dependent mechanism. Furthermore, increased AICD production in hippocampal neurons modifies oscillatory activity, specifically in the gamma frequency range, and disrupts spatial memory task. Collectively, our data suggest that AICD pathological levels, observed in AD mouse models and in human patients, might contribute to progressive neuron homeostatic failure, driving the shift from normal ageing to AD."
1 . Pousinha PA, Mouska X, Bianchi D, Temido-Ferreira M, Rajão-Saraiva J, Gomes R, Fernandez SP, Salgueiro-Pereira AR, Gandin C, Raymond EF, Barik J, Goutagny R, Bethus I, Lopes LV, Migliore M, Marie H (2019) The Amyloid Precursor Protein C-Terminal Domain Alters CA1 Neuron Firing, Modifying Hippocampus Oscillations and Impairing Spatial Memory Encoding. Cell Rep 29:317-331.e5 [PubMed]
Model Information (Click on a link to find other models with that property)
Model Type: Neuron or other electrically excitable cell;
Brain Region(s)/Organism: Hippocampus;
Cell Type(s): Hippocampus CA1 pyramidal GLU cell;
Channel(s): I Na,t; I A; I K; I M; I h; I L high threshold; I_AHP;
Gap Junctions:
Receptor(s): NMDA;
Transmitter(s): Glutamate;
Simulation Environment: NEURON;
Model Concept(s): Aging/Alzheimer`s; Oscillations; Action Potentials; Memory;
Implementer(s): Bianchi, Daniela [danielabianchi12 -at-];
Search NeuronDB for information about:  Hippocampus CA1 pyramidal GLU cell; NMDA; I Na,t; I L high threshold; I A; I K; I M; I h; I_AHP; Glutamate;
ANsyn.mod *
bgka.mod *
burststim2.mod *
cad.mod *
cal.mod *
calH.mod *
car.mod *
cat.mod *
ccanl.mod *
d3.mod *
gskch.mod *
h.mod *
ichan2.mod *
Ih.mod *
kadist.mod *
kaprox.mod *
Kaxon.mod *
kca.mod *
Kdend.mod *
kdr.mod *
kdrax.mod *
km.mod *
Ksoma.mod *
LcaMig.mod *
my_exp2syn.mod *
na3.mod *
na3dend.mod *
na3notrunk.mod *
Naaxon.mod *
Nadend.mod *
nap.mod *
Nasoma.mod *
nax.mod *
nca.mod *
nmdanet.mod *
regn_stim.mod *
somacar.mod *
STDPE2Syn2.mod *
ranstream.hoc *
stim_cell.hoc *
// Dummy cell containing a NetStim object
// BPG 5-12-08

begintemplate StimCell
public is_art
public init
public connect2target
public soma, stim

objref stim

proc init() {

create soma

proc biophys() {
//	soma stim = new NetStim()
	soma stim = new RegnStim()
    	stim.number = 10000
    	stim.start = 50
    	stim.interval = 25
    	stim.noise = 0

obfunc connect2target() { localobj nc //$o1 target point process, optional $o2 returned NetCon
  	soma nc = new NetCon(stim, $o1)
  	if (numarg() == 2) { $o2 = nc } // for backward compatibility
  	return nc

func is_art() { return 0 }

endtemplate StimCell

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