Abstract:
:We propose and analyse the properties of a new class of models for the electromechanics of cardiac tissue. The set of governing equations consists of nonlinear elasticity using a viscoelastic and orthotropic exponential constitutive law, for both active stress and active strain formulations of active mechanics, coupled with a four-variable phenomenological model for human cardiac cell electrophysiology, which produces an accurate description of the action potential. The conductivities in the model of electric propagation are modified according to stress, inducing an additional degree of nonlinearity and anisotropy in the coupling mechanisms, and the activation model assumes a simplified stretch-calcium interaction generating active tension or active strain. The influence of the new terms in the electromechanical model is evaluated through a sensitivity analysis, and we provide numerical validation through a set of computational tests using a novel mixed-primal finite element scheme.
journal_name
Biomech Model Mechanobioljournal_title
Biomechanics and modeling in mechanobiologyauthors
Propp A,Gizzi A,Levrero-Florencio F,Ruiz-Baier Rdoi
10.1007/s10237-019-01237-ysubject
Has Abstractpub_date
2020-04-01 00:00:00pages
633-659issue
2eissn
1617-7959issn
1617-7940pii
10.1007/s10237-019-01237-yjournal_volume
19pub_type
杂志文章abstract::Experiments have demonstrated biological tissues grow by mechanically sensing their localized curvature, therefore making geometry a key consideration for tissue scaffold design. We developed a simulation approach for modeling tissue growth on beam-based geometries of repeating unit cells, with four lattice topologies...
journal_title:Biomechanics and modeling in mechanobiology
pub_type: 杂志文章
doi:10.1007/s10237-018-1040-9
更新日期:2018-10-01 00:00:00
abstract::Thrombosis is a major concern in blood-coated medical devices. Contact activation, which is the initial part of the coagulation cascade in device-related thrombosis, is not considered in current thrombus formation models. In the present study, pro-coagulant reactions including the contact activation system are coupled...
journal_title:Biomechanics and modeling in mechanobiology
pub_type: 杂志文章
doi:10.1007/s10237-017-0994-3
更新日期:2018-06-01 00:00:00
abstract::The integrity of articular cartilage depends on the proper functioning and mechanical stimulation of chondrocytes, the cells that synthesize extracellular matrix and maintain tissue health. The biosynthetic activity of chondrocytes is influenced by genetic factors, environmental influences, extracellular matrix compos...
journal_title:Biomechanics and modeling in mechanobiology
pub_type: 杂志文章
doi:10.1007/s10237-006-0016-3
更新日期:2007-04-01 00:00:00
abstract::Formins promote actin assembly and are involved in force-dependent cytoskeletal remodeling. However, how force alters the formin functions still needs to be investigated. Here, using atomic force microscopy and biomembrane force probe, we investigated how mechanical force affects formin-mediated actin interactions at ...
journal_title:Biomechanics and modeling in mechanobiology
pub_type: 杂志文章
doi:10.1007/s10237-019-01284-5
更新日期:2020-10-01 00:00:00
abstract::A dynamic model is proposed for shear stress induced adenosine triphosphate (ATP) release from endothelial cells (ECs). The dynamic behavior of the ATP/ADP concentration at the endothelial surface by viscous shear flow is investigated through simulation studies based on the dynamic ATP release model. The numerical res...
journal_title:Biomechanics and modeling in mechanobiology
pub_type: 杂志文章
doi:10.1007/s10237-007-0088-8
更新日期:2008-10-01 00:00:00
abstract::By following the common definition of forward-dynamics simulations, i.e. predicting movement based on (neural) muscle activity, this work describes, for the first time, a forward-dynamics simulation framework of a musculoskeletal system, in which all components are represented as continuous, three-dimensional, volumet...
journal_title:Biomechanics and modeling in mechanobiology
pub_type: 杂志文章
doi:10.1007/s10237-016-0850-x
更新日期:2017-06-01 00:00:00
abstract::Bone, because of its hierarchical composite structure, exhibits an excellent combination of stiffness and toughness, which is due substantially to the structural order and deformation at the smaller length scales. Here, we focus on the mineralized collagen fibril, consisting of hydroxyapatite plates with nanometric di...
journal_title:Biomechanics and modeling in mechanobiology
pub_type: 杂志文章
doi:10.1007/s10237-010-0223-9
更新日期:2011-04-01 00:00:00
abstract::The mechanical behavior of most biological soft tissue is nonlinear viscoelastic rather than elastic. Many of the models previously proposed for soft tissue involve ad hoc systems of springs and dashpots or require measurement of time-dependent constitutive coefficient functions. The model proposed here is a system of...
journal_title:Biomechanics and modeling in mechanobiology
pub_type: 杂志文章
doi:10.1007/s10237-004-0055-6
更新日期:2005-03-01 00:00:00
abstract::The paper describes the extension of a previously developed model of pressure-dependent contraction rate to the case of multiple lymphangions. Mechanical factors are key modulators of active lymphatic pumping. As part of the evolution of our lumped-parameter model to match experimental findings, we have designed an al...
journal_title:Biomechanics and modeling in mechanobiology
pub_type: 杂志文章
doi:10.1007/s10237-018-1042-7
更新日期:2018-10-01 00:00:00
abstract::The monitoring of the ciliated walls in the uterine tube has supreme importance in enhancing the sperm to reach the egg (capacitation processes), and at peristaltic ciliary flow has a more favorable residual time along the canal when compared to the peristaltic flow. Based on the importance of this study, a mathematic...
journal_title:Biomechanics and modeling in mechanobiology
pub_type: 杂志文章
doi:10.1007/s10237-020-01405-5
更新日期:2021-01-03 00:00:00
abstract::Plaque progression and vulnerability are influenced by many risk factors. Our goal is to find a simple method to combine multiple risk factors for better plaque development prediction. Intravascular ultrasound data at baseline and follow-up were acquired from nine patients, and fluid-structure interaction models were ...
journal_title:Biomechanics and modeling in mechanobiology
pub_type: 杂志文章
doi:10.1007/s10237-019-01143-3
更新日期:2019-10-01 00:00:00
abstract::Lymph is transported along collecting lymphatic vessels by intrinsic and extrinsic pumping. The walls have muscle of a type intermediate between blood-vascular smooth muscle and myocardium; a contracting segment between two valves (a lymphangion) constitutes a pump. This intrinsic mechanism is investigated ex vivo in ...
journal_title:Biomechanics and modeling in mechanobiology
pub_type: 杂志文章
doi:10.1007/s10237-017-0933-3
更新日期:2017-12-01 00:00:00
abstract::During total liquid ventilation, lung cells are exposed to perfluorocarbon (PFC) whose chemophysical properties highly differ from standard aqueous cell feeding medium (DMEM). We herein perform a systematic study of structural and mechanical properties of A549 alveolar epithelial cells in order to characterize their r...
journal_title:Biomechanics and modeling in mechanobiology
pub_type: 杂志文章
doi:10.1007/s10237-018-1005-z
更新日期:2018-08-01 00:00:00
abstract::This study presents a method for estimating the spatial variations in material properties of elastic membranes, such as biological tissue, which contain both inhomogeneous strain fields and inhomogeneous material properties. In order to validate the method, an inhomogeneous, isotropic rubber membrane was biaxially loa...
journal_title:Biomechanics and modeling in mechanobiology
pub_type: 杂志文章
doi:10.1007/s10237-002-0019-7
更新日期:2002-12-01 00:00:00
abstract::In its permanent quest of mechanobiological homeostasis, our vasculature significantly adapts across multiple length and timescales in various physiological and pathological conditions. Computational modeling of vascular growth and remodeling (G&R) has significantly improved our insights into the mechanobiological pro...
journal_title:Biomechanics and modeling in mechanobiology
pub_type: 杂志文章
doi:10.1007/s10237-019-01184-8
更新日期:2019-12-01 00:00:00
abstract::Adherent cells normally apply forces as a generic means of sensing and responding to the mechanical nature of their surrounding environment. How these forces vary as a function of the extracellular rigidity is critical to understanding the regulatory functions that drive important phenomena such as wound healing or mu...
journal_title:Biomechanics and modeling in mechanobiology
pub_type: 杂志文章
doi:10.1007/s10237-013-0508-x
更新日期:2014-04-01 00:00:00
abstract::In the present work, a constitutive model for articular cartilage is proposed in finite elasto-viscoplasticity. For simplification, articular cartilage is supposed to be a typical composite composed of a soft basis and a fiber assembly. The stress tensor and free energy function are hence accordingly divided into two ...
journal_title:Biomechanics and modeling in mechanobiology
pub_type: 杂志文章
doi:10.1007/s10237-018-1062-3
更新日期:2018-12-01 00:00:00
abstract::Skin expansion delivers newly grown skin that maintains histological and mechanical features of the original tissue. Although it is the gold standard for cutaneous defect correction today, the underlying mechanisms remain poorly understood. Here we present a novel technique to quantify anisotropic prestrain, deformati...
journal_title:Biomechanics and modeling in mechanobiology
pub_type: 杂志文章
doi:10.1007/s10237-015-0650-8
更新日期:2015-10-01 00:00:00
abstract::The influence of an aortic aneurysm on blood flow waveforms is well established, but how to exploit this link for diagnostic purposes still remains challenging. This work uses a combination of experimental and computational modelling to study how aneurysms of various size affect the waveforms. Experimental studies are...
journal_title:Biomechanics and modeling in mechanobiology
pub_type: 杂志文章
doi:10.1007/s10237-017-0884-8
更新日期:2017-08-01 00:00:00
abstract::Adherent cells sense their mechanical environment, which, in turn, regulates their functions. During the past decade, a growing body of evidence has indicated that a deformable, solid-state intracellular structure known as the cytoskeleton (CSK) plays a major role in transmitting and distributing mechanical stresses w...
journal_title:Biomechanics and modeling in mechanobiology
pub_type: 杂志文章,评审
doi:10.1007/s10237-002-0009-9
更新日期:2002-06-01 00:00:00
abstract::Human embryonic stem cells (hESCs) can differentiate to three germ layers within biochemical and biomechanical niches. The complicated mechanical environments in vivo could have diverse effects on the fate decision and biological functions of hESCs. To globally screen mechanosensitive molecules, three typical types of...
journal_title:Biomechanics and modeling in mechanobiology
pub_type: 杂志文章
doi:10.1007/s10237-020-01378-5
更新日期:2020-08-18 00:00:00
abstract::Conventional brain injury metrics are scalars that treat the whole head/brain as a single unit but do not characterize the distribution of brain responses. Here, we establish a network-based "response feature matrix" to characterize the magnitude and distribution of impact-induced brain strains. The network nodes and ...
journal_title:Biomechanics and modeling in mechanobiology
pub_type: 杂志文章
doi:10.1007/s10237-019-01261-y
更新日期:2020-06-01 00:00:00
abstract::In contrast to most mechanical properties of the red cell, experimental information on stress relaxation (SR) of the membrane skeleton is scarce. On the other hand, many postulates or assumptions as to the value of the characteristic time of SR [Formula: see text] can be found in the literature. Here, an experiment is...
journal_title:Biomechanics and modeling in mechanobiology
pub_type: 杂志文章
doi:10.1007/s10237-016-0813-2
更新日期:2017-02-01 00:00:00
abstract::The controlled cortical impact (CCI) model is widely used in many laboratories to study traumatic brain injury (TBI). Although external impact parameters during CCI tests could be clearly defined, little is known about the internal tissue-level mechanical responses of the rat brain. Furthermore, the external impact pa...
journal_title:Biomechanics and modeling in mechanobiology
pub_type: 杂志文章
doi:10.1007/s10237-010-0212-z
更新日期:2010-12-01 00:00:00
abstract::Disease alters tissue microstructure, which in turn affects the macroscopic mechanical properties of tissue. In elasticity imaging, the macroscopic response is measured and is used to infer the spatial distribution of the elastic constitutive parameters. When an empirical constitutive model is used, these parameters c...
journal_title:Biomechanics and modeling in mechanobiology
pub_type: 杂志文章
doi:10.1007/s10237-016-0831-0
更新日期:2017-04-01 00:00:00
abstract::Ischemic stroke is a major cause of death and long-term disabilities worldwide. In this paper, we aim to represent a comprehensive simulation of the motion of emboli through cerebrovascular network within patient-specific computational model. The model consists of major arteries of the circle of Willis reconstructed f...
journal_title:Biomechanics and modeling in mechanobiology
pub_type: 杂志文章
doi:10.1007/s10237-016-0762-9
更新日期:2016-10-01 00:00:00
abstract::Bone tissue regeneration using scaffolds is receiving an increasing interest in orthopedic surgery and tissue engineering applications. In this study, we present the geometrical characterization of a specific family of scaffolds based on a face cubic centered (FCC) arrangement of empty pores leading to analytical form...
journal_title:Biomechanics and modeling in mechanobiology
pub_type: 杂志文章
doi:10.1007/s10237-007-0089-7
更新日期:2008-10-01 00:00:00
abstract::We propose a mechanical model of generation of vitreoretinal tractions in the presence of posterior vitreous detachment (PVD). PVD is a common occurrence with aging, and it consists in the separation of the vitreous body from the retina at the back pole of the eye, due to progressive shrinking of the vitreous gel. Dur...
journal_title:Biomechanics and modeling in mechanobiology
pub_type: 杂志文章
doi:10.1007/s10237-020-01360-1
更新日期:2020-12-01 00:00:00
abstract::Prior studies indicated that mechanical loading influences cell turnover and matrix remodeling in tissues, suggesting that mechanical stimuli can play an active role in engineering artificial tissues. While most tissue culture studies focus on influence of uniaxial loading or constraints, effects of multi-axial loadin...
journal_title:Biomechanics and modeling in mechanobiology
pub_type: 杂志文章
doi:10.1007/s10237-012-0448-x
更新日期:2013-10-01 00:00:00
abstract::Long-term adaptation of soft tissues is realized through growth and remodeling (G&R). Mathematical models are powerful tools in testing hypotheses on G&R and supporting the design and interpretation of experiments. Most theoretical G&R studies concentrate on description of either growth or remodeling. Our model combin...
journal_title:Biomechanics and modeling in mechanobiology
pub_type: 杂志文章
doi:10.1007/s10237-010-0204-z
更新日期:2010-12-01 00:00:00