Biomechanical tests for studying contractility and viscoelastic properties of single cardiac muscle cells

2020 ◽  
Author(s):  
Denis Volzhaninov ◽  
Anastasia Khokhlova
2001 ◽  
Author(s):  
Catalin F. Baicu ◽  
Michael R. Zile

Abstract Pathological processes which cause diastolic congestive heart failure (CHF), such as pressure overload hypertrophy (POH), produce abnormalities in the material properties of cardiac muscle cells (cardiomyocytes) and may selectively alter its elastic stiffness, viscosity, or both. Previous methods used to characterize these cardiomyocyte viscoelastic properties were constrained by specific biological and engineering limitations, which prevented testing in conditions that mimic normal physiology. The current study proposes an uniaxial variable-rate stretching method, in which isolated cardiomyocytes embedded in a three-dimensional gel matrix were subjected to stretch. Physiological Ca++ (2.5 mM) and rapid stretch rates up to 100 μm/sec provided experimental conditions parallel to in vivo physiology. The proposed method identified and individually quantified both cellular stiffness and viscosity, and showed that POH increased both elastic and viscous cardiomyocyte diastolic properties.


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Jaung-Geng Lin ◽  
Chun-Hsien Chu ◽  
Yung-Hsien Chang ◽  
Chung-Gwo Chang ◽  
...  

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Han-Jung Chae ◽  
Cheng-Shi Piao ◽  
Suhn-Hee Kim ◽  
Hyung-Ryong Kim ◽  
...  

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Vol 86 (2) ◽  
pp. 358 ◽  
Author(s):  
M. J. Galvin ◽  
C. A. Hall ◽  
D. I. McRee

2019 ◽  
Vol 174 ◽  
pp. 103-109 ◽  
Author(s):  
Nomin-Erdene Oyunbaatar ◽  
Arunkumar Shanmugasundaram ◽  
Dong-Weon Lee

2017 ◽  
Vol 16 (5) ◽  
pp. 5972-5978 ◽  
Author(s):  
Xuehua Xu ◽  
Chengliang Luo ◽  
Zhixiang Zhang ◽  
Jun Hu ◽  
Xiangting Gao ◽  
...  

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