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. Author manuscript; available in PMC: 2016 Feb 21.
Published in final edited form as: J Theor Biol. 2014 Dec 9;367:166–179. doi: 10.1016/j.jtbi.2014.11.021
Ranges for Host-specific PRCC
Parameter Unit* Baseline Value Min Max
Bacterial carrying capacity of each grid compartment Bacteria 115
Intracellular bacterial growth rate h−1 0.027
Extracellular bacterial growth rate h−1 0.015
Rate of death of bacteria trapped in caseated compartments h−1 5.1
Number of host cell deaths causing caseation 9 7 11
Time to heal caseation Days 10 8 12
TNF threshold for causing apoptosis Molecules 1150 920 1380
Rate of TNF induced apoptosis s−1 1.7×10-6 1.3×10-6 2.04×10-6
Minimum chemokine concentration allowing chemotaxis Molecules 0.47 0.4 0.6
Maximum chemokine concentration allowing chemotaxis Molecules 480 380 570
Initial macrophage density Fraction of grid comp. 0.04 0.03 0.05
Time steps before a resting macrophage can move Timesteps 3 2.4 3.6
Time steps before an activated macrophage can move Timesteps 19 15 23
Time steps before an infected macrophage can move Timesteps 170 135 200
TNF threshold for activating NFkB Molecules 75 60 90
Rate of TNF induced NFkB activation s−1 1.06×10-5 8.5×10-6 1.3×10-5
Number of bacteria resting macrophage can phagocytose Bacteria 1
Probability of resting macrophage killing bacteria 0.12 0.1 0.15
Adjustment for killing probability of resting macrophages with NFkB activated 0.2 0.15 0.25
Number of extracellular bacteria that can activate NFkB Bacteria 250 200 300
Threshold for intracellular bacteria causing chronically infected macrophages Bacteria 12 10 15
Threshold for intracellular bacteria causing macrophage to burst Bacteria 23 18 30
Number of bacteria activated macrophage can phagocytose Bacteria 5 4 6
Probability of an activated macrophage healing a caseated compartment in its Moore neighborhood 0.0055 0.0044 0.0066
Probability of a T-cell moving to the same compartment as a macrophage 0.046 0.035 0.055
IFN γ-producing T-cell probability of inducing Fas/FasL mediated apoptosis 0.035 0.03 0.04
IFN γ-producing T-cell probability of producing TNF 0.045 0.04 0.05
IFN γ-producing T-cell probability of producing IFN 0.35 0.3 0.45
Cytotoxic T-cell probability of killing a macrophage 0.009 0.007 0.010
Cytotoxic T-cell probability of killing a macrophage and all of its intracellular bacteria 0.7 0.6 0.9
Cytotoxic T-cell probability of producing TNF 0.05 0.04 0.06
Regulatory T-cell probability of deactivating activated macrophage 0.008 0.006 0.01
Time before maximum recruitment rates are reached Timesteps 980 790 1180
Macrophage maximal recruitment probability 0.32 0.25 0.4
Macrophage chemokine recruitment threshold Molecules 0.86 0.7 1
Macrophage TNF recruitment threshold Molecules 0.011 0.009 0.015
Macrophage half sat for TNF recruitment Molecules 1.6 1.3 2
Macrophage half sat for chemokine recruitment Molecules 2.2 1.8 2.6
IFN γ-producing T-cell maximal recruitment probability 0.15 0.12 0.18
IFN γ-producing T-cell chemokine recruitment threshold Molecules 0.07 0.06 0.09
IFN γ-producing T-cell TNF recruitment threshold Molecules 1.3 1 1.6
IFN γ-producing T-cell half sat for TNF recruitment Molecules 1.3 1 1.6
IFN γ-producing T-cell half sat for chemokine recruitment Molecules 2 1.5 2.5
Cytotoxic T-cell maximal recruitment probability 0.12 0.1 0.15
Cytotoxic T-cell chemokine recruitment threshold Molecules 4.5 3.6 5.4
Cytotoxic T-cell TNF recruitment threshold Molecules 1.3 1 1.5
Cytotoxic T-cell half sat for TNF recruitment Molecules 1.2 1 1.5
Cytotoxic T-cell half sat for chemokine recruitment Molecules 9 7 10
Regulatory T-cell maximal recruitment probability 0.03 0.02 0.04
Regulatory T-cell chemokine recruitment threshold Molecules 2 1.5 2.5
Regulatory T-cell TNF recruitment threshold Molecules 1.7 1.3 2
Regulatory T-cell half sat for TNF recruitment Molecules 2.2 1.8 2.7
Regulatory T-cell half sat for chemokine recruitment Molecules 1.5 1.2 1.8
*

Conversion factor: 10 min/timestep.