A homogenized constrained mixture model of cardiac growth and remodeling: analyzing mechanobiological stability and reversal.
A homogenized constrained mixture model of cardiac growth and remodeling: analyzing mechanobiological stability and reversal.
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DOI:
10.1007/s10237-023-01747-w
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发表时间:
2023-12
影响因子:
3.5
通讯作者:
Wall, Wolfgang A.
中科院分区:
文献类型:
--
作者:
Gebauer, Amadeus M.;Pfaller, Martin R.;Braeu, Fabian A.;Cyron, Christian J.;Wall, Wolfgang A.
关键词:
Cardiac growth and remodeling (G&R) patterns change ventricular size, shape, and function both globally and locally. Biomechanical, neurohormonal, and genetic stimuli drive these patterns through changes in myocyte dimension and fibrosis. We propose a novel microstructure-motivated model that predicts organ-scale G&R in the heart based on the homogenized constrained mixture theory. Previous models, based on the kinematic growth theory, reproduced consequences of G&R in bulk myocardial tissue by prescribing the direction and extent of growth but neglected underlying cellular mechanisms. In our model, the direction and extent of G&R emerge naturally from intra- and extracellular turnover processes in myocardial tissue constituents and their preferred homeostatic stretch state. We additionally propose a method to obtain a mechanobiologically equilibrated reference configuration. We test our model on an idealized 3D left ventricular geometry and demonstrate that our model aims to maintain tensional homeostasis in hypertension conditions. In a stability map, we identify regions of stable and unstable G&R from an identical parameter set with varying systolic pressures and growth factors. Furthermore, we show the extent of G&R reversal after returning the systolic pressure to baseline following stage 1 and 2 hypertension. A realistic model of organ-scale cardiac G&R has the potential to identify patients at risk of heart failure, enable personalized cardiac therapies, and facilitate the optimal design of medical devices. The online version contains supplementary material available at 10.1007/s10237-023-01747-w.
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影响因子:
3.5
作者:
Cyron CJ;Aydin RC;Humphrey JD
通讯作者:
Humphrey JD
DOI:
10.1016/j.ijengsci.2014.08.003
发表时间:
2014-12-01
影响因子:
6.6
作者:
Cyron, C. J.;Humphrey, J. D.
通讯作者:
Humphrey, J. D.
影响因子:
4.4
作者:
Ezra, Daniel G.;Ellis, James S.;Bailly, Maryse
通讯作者:
Bailly, Maryse
影响因子:
20.1
作者:
FREEMAN, GL;LEWINTER, MM
通讯作者:
LEWINTER, MM
影响因子:
3.5
作者:
Estrada AC;Yoshida K;Saucerman JJ;Holmes JW
通讯作者:
Holmes JW