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Amyloid beta (IA block) effects on a model CA1 pyramidal cell (Morse et al. 2010)
Accession: 87284
The model simulations provide evidence oblique dendrites in CA1 pyramidal neurons are susceptible to hyper-excitability by amyloid beta block of the transient K+ channel, IA. See paper for details.
Reference: Morse TM, Carnevale NT, Mutalik PG, Migliore M, Shepherd GM (2010) Abnormal excitability of oblique dendrites implicated in early Alzheimer's: a computational study Front. Neural Circuits 4:16 [PubMed]
Citations  Citation Browser
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:  
Cell Type(s):  CA1 pyramidal neuron;  
Channel(s):  I Na,t; I L high threshold; I N; I T low threshold; I A; I K; I h;  
Gap Junctions:  
Receptor(s):  
Gene(s):  
Transmitter(s):  
Simulation Environment:  Neuron;
Model Concept(s):  Dendritic Action Potentials; Active Dendrites; Detailed Neuronal Models; Pathophysiology; Aging/Alzheimer`s;
Implementer(s):  Carnevale, Ted [Ted.Carnevale at Yale.edu]; Morse, Tom [Tom.Morse at Yale.edu];
Search NeuronDB for information about:  CA1 pyramidal neuron; I Na,t; I L high threshold; I N; I T low threshold; I A; I K; I h;
Model files   Download zip file   Auto-launch             Help downloading and running models      Model View
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CA1_abeta
translate
readme.html
fig1.jpg
fig2.jpg
fig3.jpg
fig4.jpg
fig5.jpg
fig6b.jpg
cal2.mod
can2.mod
cat.mod
distr.mod
cacumm.mod
cagk.mod
h.mod
ipulse2.mod
kadist.mod
kaprox.mod
kdrca1.mod
na3n.mod
naxn.mod
zcaquant.mod
control_boxes.hoc
cond_report.hoc
figs.hoc
find_averages.hoc
fixnseg.hoc
generate_conc_graph.hoc
gka_averager.hoc
graph_na3_kinetics.hoc
distribute_currents.hoc
init_and_run_and_graph.hoc
add_ca.hoc
bAP_peak_vecs.hoc
fig2A_c91662.hoc
leaky_distal.hoc
maxica.hoc
mosinit.hoc
na3_shifter.hoc
ntc_additions.hoc
obliques_primary_tuft.hoc
oblique_application.hoc
oblique_scaled_ka.hoc
paper_fig_buttons.hoc
aBeta.hoc
sectiontest.hoc
shrink_obliques.hoc
SubBranch.hoc
trigger_and_start.hoc
wait_for_go.hoc
GaspiriniEtAl2007Fig1Stimulation.ses
fig3.ses
c91662.ses
maxica.ses.20100525
fig4.ses
C91662_Link.txt
                            
This is the readme for a model used in the paper

Morse TM, Carnevale NT, Mutalik PG, Migliore M, Shepherd GM (2010)
Abnormal excitability of oblique dendrites implicated in early
Alzheimer's: a computational study Front. Neural Circuits 4:16


The model code was contributed by Tom Morse.  It was created (see
paper for details) from earlier models (especially Migliore et
al. 2005 and calcium channels from Hemond et al. 2008) with
modifications and additions by Tom Morse and Ted Carnevale with
interaction with the other authors. It requires the NEURON simulator
to be installed (available at http://www.neuron.yale.edu).

To recreate figures from the paper, start the simulator by
auto-launching from ModelDB *OR*

Under unix systems:
-------------------
In the expanded archive's folder compile the mod files using the
command "nrnivmodl"
run the simulation with the command "nrngui mosinit.hoc"

Under Windows systems:
----------------------
Compile the mod files using the "mknrndll" program.
A double click on the simulation file
mosinit.hoc
will open the simulation window.

Under MAC OS X:
---------------
drag and drop the expanded archive's folder onto the mknrndll icon.
drag and drop the mosinit.hoc file onto the nrngui icon.

Once the simulation is started click on a button to recreate a figure
from the paper, e.g.:

Figure 1,2 generates Figure 1B and 2 simultaneously:
(the simulation part is Figure 1B right hand side traces):
Figure 1B right hand side

Figure 2:
Figure 2

Figure 3 (example):
Figure 3

Figure 4:
Figure 4

Figure 5:
Figure 5

Figure 6b:
Figure 6b

Questions on how to use this model should be directed to tom.morse @
yale.edu.

References

Chen C (2005) beta-Amyloid increases dendritic Ca2+ influx by
inhibiting the A-type K+ current in hippocampal CA1 pyramidal
neurons. Biochem Biophys Res Commun 338:1913-9

Migliore M, Ferrante M, Ascoli GA (2005) 
Signal propagation in oblique dendrites of CA1 pyramidal cells.
J Neurophysiol 94:4145-4155 [Model]

Hemond P, Epstein D, Boley A, Migliore M, Ascoli GA, Jaffe DB (2008)
Distinct classes of pyramidal cells exhibit mutually exclusive firing
patterns in hippocampal area CA3b Hippocampus 18(4):411-24 [Model]

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