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. 2021 Nov 2;9:744560. doi: 10.3389/fbioe.2021.744560

TABLE 1.

Multiscale agent-based modelling frameworks of vascular adaptation.

Authors (Year) Pathology Multiscale framework Agents Domain
Bhui and Hayenga (2017) Atherosclerosis Tissue-scale module (seconds) EC, SMC (inert agents), Leukocytes (Neutrophils, monocytes, macrophages, foam cells and lymphocytes) Simplified 3D model of coronary artery
Hemodynamics module: FEM. I: vessel geometry; O: WSS
Cell-scale module (hours/days)
ABM; I: WSS; O: vessel geometry and wall composition
Molecular-scale module (seconds)
Cytokine and LDL transport in the ABM
Corti et al. (2019), Corti et al. (2020) Atherosclerosis Tissue-scale module (seconds) SMC, ECM (collagen, elastin), LDL, Fibroblasts Idealized 3D model of superficial femoral artery, with 2D ABM cross-sections
Hemodynamics module: FVM. I: vessel geometry; O: WSS
Cell-scale module (hours/days)
ABM; I: WSS; O: vessel geometry and wall composition
Caiazzo et al. (2011); Tahir et al. (2011); Tahir et al. (2013); Tahir et al. (2014); Zun et al. (2017); Zun et al. (2019) In-stent restenosis Tissue-scale module (seconds) SMC, IEL (Caiazzo et al. (2011); Tahir et al. (2011); Tahir et al. (2013); Tahir et al. (2014)); SMC, IEL, EEL (Zun et al. (2017)); SMC, ECM, IEL, EEL (Zun et al. (2019)) 2D longitudinal section of idealized straight artery with 2 stent struts (Caiazzo et al. (2011)),Tahir et al. (2011); Tahir et al. (2013) - 6 stent struts (Tahir et al. (2014)); 3D straight artery (Zun et al. (2017)); Idealized curved artery with stent reconstructed from micro-CT. (Zun et al. (2019))
Hemodynamics module: Lattice Boltzmann. I: vessel geometry; O: WSS/OSI
Cell-scale module (hours/days)
ABM - physical solver: stent deployment and structural cell dynamics. I: vessel geometry; O: equilibrium position, vessel geometry and structural stress
ABM - biological solver: SMC cell-cycle. I: WSS/OSI, drug concentration, structural stress. O: vessel geometry
Molecular-scale module (seconds)
Drug diffusion: FD. I: vessel geometry; O: drug concentration in the tissue. Included in (Caiazzo et al. (2011); Tahir et al. (2011))
Boyle et al. (2010) In-stent restenosis Tissue-scale module (seconds) SMC, EC ECM, matrix degrading factors and growth factors modeled as agent internal variables Solid mechanics module: artery as 3D cylinder (symmetry: 1/8th model circumferentially). Lattice-based model: 2D longitudinal section
Solid mechanics module: FEM. Stent expansion. I: vessel geometry; O: vessel geometry, minimum principal stress
Cell-scale module (hours/days)
ABM. I: vessel geometry, minimum principal stress. O: updated vessel geometry and wall composition
Boyle et al. (2011) In-stent restenosis Tissue-scale module (seconds) SMC ECM, matrix degrading factors, growth factors and damage modeled as agent internal variables 2D cross-section of an ideal cylindrical artery with 6 stent struts. 1/6th of the model considered for symmetry
Solid mechanics module: FEM. Stent expansion. I: vessel geometry; O: vessel geometry, von Mises stress
Cell-scale module (hours/days)
ABM. I: vessel geometry, damage, matrix degrading factors, growth factors, ECM; O: updated vessel geometry and wall composition
Molecular-scale module (seconds)
Inflammation module: Set of ODEs. I: von Mises stress. O: damage, matrix degrading factors, growth factors, ECM
Zahedmanesh et al. (2014) In-stent restenosis Tissue-scale module (seconds) SMC, EC ECM, matrix degrading factors and damage modeled as agent internal variables 2D longitudinal section (axisymmetric model) of artery and single stent strut
Solid mechanics module: FEM. Stent expansion. I: vessel geometry; O: vessel geometry, von Mises stress
Cell-scale module (hours/days)
ABM. I: vessel geometry, damage (sigmoid function of von Mises stress); O: updated vessel geometry and wall composition
Nolan and Lally (2018) In-stent restenosis Tissue-scale module (seconds) SMC, EC, ECM, matrix degrading factors, growth factors, phenotype and damage modeled as agent internal variables 2D quarter cylinder of artery in the radial-circumferential plane
Solid mechanics module: FEM. Stent expansion. I: vessel geometry; O: vessel geometry, von Mises stress
Cell-scale module (hours/days)
ABM. I: vessel geometry, damage, matrix degrading factors, growth factors, ECM, phenotype; O: updated vessel geometry and wall composition
Molecular-scale module (seconds)
Inflammation module: Set of ODEs. I: von Mises stress. O: damage, matrix degrading factors, growth factors, ECM, phenotype
Li et al. (2019) In-stent restenosis Tissue-scale module (seconds) SMC, EC ECM, matrix degrading factors, growth factors, cell phenotype and damage modeled as agent internal variables 2D longitudinal section (axisymmetric model) of artery and single stent strut
Solid mechanics module: FEM. Stent expansion and structural equilibrium following geometrical changes. I: vessel geometry; O: vessel geometry, von Mises stress
Cell-scale module (hours/days)
ABM. I: vessel geometry, damage, matrix degrading factors, growth factors, ECM; O: updated vessel geometry and wall composition
Molecular-scale module (seconds)
Inflammation module: set of ODEs. I: von Mises stress. O: damage, matrix degrading factors, growth factors, ECM, cell phenotype
Garbey et al. (2015) Vein graft remodeling Tissue-scale module (seconds) SMC, ECM 2D circular vein graft model
Hemodynamics module: FVM and immersed boundary implementation. I: vessel geometry; O: WSS.
Solid mechanics module: FEM. I: vessel geometry; O: loaded vessel geometry, wall tension
Cell-scale module (hours/days)
ABM. I: WSS, wall tension; O: updated unloaded vessel geometry and wall composition
Garbey et al. (2017) Vein graft remodeling Tissue-scale module (seconds) SMC, ECM 2D circular vein graft model
Hemodynamics module: Analytical solution (Poisson problem). I: vessel geometry; O: WSS.
Solid mechanics module: Analytical solution thick wall cylinder. I: vessel geometry; O: wall tension
Cell-scale module (hours/days)
ABM. I: WSS, wall tension; O: updated vessel geometry and wall composition
Garbey et al. (2019) Vein graft remodeling Tissue-scale module (seconds) SMC, ECM 2D circular vein graft model
Hemodynamics module: Analytical solution (Poisson problem). I: vessel geometry; O: WSS.
Solid mechanics module: Analytical solution thick wall cylinder. I: vessel geometry; O: wall tension
Cell-scale module (hours/days)
ABM. SMC/ECM activities. I: WSS, wall tension; O: updated vessel geometry and wall composition
IBM. SMC migration and wall remodeling. I: ABM vessel geometry; O: updated vessel geometry and composition
Molecular-scale module (seconds)
Diffusion of growth factor. PDE. I: WSS; O: spatio-temporal evolution of growth factor
Zahedmanesh and Lally (2012) Remodeling of a vascular tissue-engineered scaffold Tissue-scale module (seconds) SMC, ECM 2D longitudinal section (axisymmetric model) of vascular scaffold
Solid mechanics module: FEM. I: vessel geometry and wall composition; O: vessel geometry, cyclic strain, pore fluid velocity
Cell-scale module (hours/days)
ABM. I: vessel geometry, cyclic strain, pore fluid velocity. O: updated vessel geometry and wall composition
Keshavarzian et al. (2018) Arterial growth and remodeling under different conditions: growth factors, chemicals, blood pressure Tissue-scale module (seconds) EC, SMC, fibroblasts, ECM 3D model of coronary artery
Solid mechanics module: FEM. I: vessel geometry and wall composition (use of a content-based strain energy density function); O: maximum principal stress and strain under different loading condition
Cell-scale module (hours/days)
ABM. I: vessel geometry, stress, strain. O: updated vessel geometry and wall composition

ABM: agent-based model; FEM: finite element method; FVM: finite volume method; FD: finite difference; ODE: ordinary differential equation; PDE: partial differential equation; IBM: immersed boundary method; I: input; O: output; WSS: wall shear stress; OSI: oscillatory shear index; SMC: smooth muscle cell; EC: endothelial cell; ECM: extracellular matrix; LDL: low density lipoprotein; IEL: internal elastic lamina; EEL: external elastic lamina; 2D: bidimensional; 3D three-dimensional.