Active force generation in cardiac muscle cells: mathematical modeling and numerical simulation of the actin-myosin interaction

F Regazzoni, L Dedè, A Quarteroni - Vietnam Journal of Mathematics, 2021 - Springer
Cardiac in silico numerical simulations are based on mathematical models describing the
physical processes involved in the heart function. In this review paper, we critically survey …

Multiscale simulations of left ventricular growth and remodeling

H Sharifi, CK Mann, AL Rockward, M Mehri… - Biophysical …, 2021 - Springer
Cardiomyocytes can adapt their size, shape, and orientation in response to altered
biomechanical or biochemical stimuli. The process by which the heart undergoes structural …

[HTML][HTML] A cardiac electromechanical model coupled with a lumped-parameter model for closed-loop blood circulation

F Regazzoni, M Salvador, PC Africa, M Fedele… - Journal of …, 2022 - Elsevier
We propose a novel mathematical and numerical model for cardiac electromechanics,
wherein biophysically detailed core models describe the different physical processes …

[HTML][HTML] A machine learning method for real-time numerical simulations of cardiac electromechanics

F Regazzoni, M Salvador, L Dedè… - Computer methods in …, 2022 - Elsevier
We propose a machine learning-based method to build a system of differential equations
that approximates the dynamics of 3D electromechanical models for the human heart …

[HTML][HTML] Machine learning of multiscale active force generation models for the efficient simulation of cardiac electromechanics

F Regazzoni, L Dedè, A Quarteroni - Computer Methods in Applied …, 2020 - Elsevier
High fidelity (HF) mathematical models describing the generation of active force in the
cardiac muscle tissue typically feature a large number of state variables to capture the …

Biophysically detailed mathematical models of multiscale cardiac active mechanics

F Regazzoni, L Dedè, A Quarteroni - PLoS computational biology, 2020 - journals.plos.org
We propose four novel mathematical models, describing the microscopic mechanisms of
force generation in the cardiac muscle tissue, which are suitable for multiscale numerical …

Coordinated force generation of skeletal myosins in myofilaments through motor coupling

M Kaya, Y Tani, T Washio, T Hisada… - Nature communications, 2017 - nature.com
In contrast to processive molecular motors, skeletal myosins form a large motor ensemble for
contraction of muscles against high loads. Despite numerous information on the molecular …

[HTML][HTML] Accelerating the convergence to a limit cycle in 3D cardiac electromechanical simulations through a data-driven 0D emulator

F Regazzoni, A Quarteroni - Computers in Biology and Medicine, 2021 - Elsevier
The results of numerical simulations of cardiac electromechanics are typically characterized
by a long transient before reaching a periodic solution known as limit cycle. This yields a …

Ut-heart: A finite element model designed for the multiscale and multiphysics integration of our knowledge on the human heart

S Sugiura, JI Okada, T Washio, T Hisada - Computational Systems Biology …, 2022 - Springer
To fully understand the health and pathology of the heart, it is necessary to integrate
knowledge accumulated at molecular, cellular, tissue, and organ levels. However, it is …

Active contraction of cardiac cells: a reduced model for sarcomere dynamics with cooperative interactions

F Regazzoni, L Dedè, A Quarteroni - Biomechanics and modeling in …, 2018 - Springer
We propose a reduced ODE model for the mechanical activation of cardiac myofilaments,
which is based on explicit spatial representation of nearest-neighbour interactions. Our …