Analysis of rat papillary muscle transverse deformation by laser diffraction

We use laser diffraction in the analysis of the transversal deformation that the papillary muscle of the female and male Wistar rat may undergo when is subjected to different tension (tension range, 0-30 mN) in the longitudinal plane. Papillary muscles from the right ventricle were illuminated at no...

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Published in:General physiology and biophysics 2010-06, Vol.29 (2), p.129-133
Main Authors: Virgen-Ortiz, Adolfo, Apolinar-Iribe, Alejandro, Ríos-Martínez, Martín E, Marín, José L, Muñiz, Jesús
Format: Article
Language:English
Subjects:
Animals
Biomechanical Phenomena
Excitation Contraction Coupling - physiology
Female
In Vitro Techniques
Lasers
Male
Myocardial Contraction - physiology
Papillary Muscles - physiology
Rats
Rats, Wistar
Stress, Mechanical
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container_end_page 133
container_issue 2
container_start_page 129
container_title General physiology and biophysics
container_volume 29
creator Virgen-Ortiz, Adolfo
Apolinar-Iribe, Alejandro
Ríos-Martínez, Martín E
Marín, José L
Muñiz, Jesús
description We use laser diffraction in the analysis of the transversal deformation that the papillary muscle of the female and male Wistar rat may undergo when is subjected to different tension (tension range, 0-30 mN) in the longitudinal plane. Papillary muscles from the right ventricle were illuminated at normal incidence with a He-Ne laser lasing at 594 nm at room temperature. The far-field diffraction pattern projected to a screen was recorded with a digital camera for its analysis. The analysis of the stress-strain curves from the two experimental groups shows that the papillary muscles from male rats exhibit a higher stiffness in the transversal axis compared to the female rats.
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subjects Animals
Biomechanical Phenomena
Excitation Contraction Coupling - physiology
Female
In Vitro Techniques
Lasers
Male
Myocardial Contraction - physiology
Papillary Muscles - physiology
Rats
Rats, Wistar
Stress, Mechanical
title Analysis of rat papillary muscle transverse deformation by laser diffraction
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