2000
DOI: 10.1152/ajpheart.2000.279.4.h1534
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Alterations in myocardial collagen content affect rat papillary muscle function

Abstract: We investigated the influence of myocardial collagen volume fraction (CVF, %) and hydroxyproline concentration (microg/mg) on rat papillary muscle function. Collagen excess was obtained in 10 rats with unilateral renal ischemia for 5 wk followed by 3-wk treatment with ramipril (20 mg. kg(-1). day(-1)) (RHTR rats; CVF = 3.83 +/- 0. 80, hydroxyproline = 3.79 +/- 0.50). Collagen degradation was induced by double infusion of oxidized glutathione (GSSG rats; CVF = 2.45 +/- 0.52, hydroxyproline = 2.85 +/- 0.18). Nin… Show more

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Cited by 88 publications
(75 citation statements)
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“…Others have pointed out that changes in collagen expression (ratio of Collagen type 1 vs. Type III) and cross-linking may potentially play a role in relaxation impairment 81,82 . Similarly, changes in titin (responsible for elasticity of muscle stiffness) expression can be correlated with diastolic stiffening 85-89 .…”
Section: The Role Of Cytoskeleton and Extracellular Matrixmentioning
confidence: 99%
“…Others have pointed out that changes in collagen expression (ratio of Collagen type 1 vs. Type III) and cross-linking may potentially play a role in relaxation impairment 81,82 . Similarly, changes in titin (responsible for elasticity of muscle stiffness) expression can be correlated with diastolic stiffening 85-89 .…”
Section: The Role Of Cytoskeleton and Extracellular Matrixmentioning
confidence: 99%
“…Cardiac tissue samples were fixed in a 10% formaldehyde solution for 48 hours using a previously described method 14,15 .…”
Section: Methodsmentioning
confidence: 99%
“…Muestras de tejido cardíaco se fijaron en solución de formol al 10% por período de 48 horas, según método ya descripto 22,23 .…”
Section: Estudio Morfométricounclassified