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• W2048157068 endingPage "1976" @default.
• W2048157068 startingPage "1971" @default.
• W2048157068 abstract "Cardiac structural and functional abnormalities are observed in metabolic syndrome. However, such changes have not been investigated in the SHRSP.Z-Leprfa/IzmDmcr rat (SHRSP-fatty) model of metabolic syndrome. Here we compare cardiac size and hemodynamic function in these rats with their lean littermates (SHRSP) and normotensive control Wistar-Kyoto rats (WKY). In male 16-week-old SHRSP-fatty, we determined heart rate and systolic blood pressure (SBP) by tail-cuff, cardiac output (CO), subcutaneous peripheral blood flow (BF) and stroke volume (SV) by plethysmography, and systolic and diastolic functions by echocardiography. We also assessed weight and collagen type I expression by Western blot in isolated atrium and ventricle, and beat rate in isolated atrial preparation by myography. Heart rate was lower in conscious SHRSP-fatty than SHRSP, and the beat rate of isolated atria was lower in SHRSP-fatty and SHRSP than that of WKY. Atrial weight was larger in SHRSP-fatty than others. Ventricular weight of SHRSP-fatty and SHRSP was larger than WKY. There were significant inverse correlations between atrial weight and heart rate or beat rate in SHRSP-fatty. SBP, CO, BF and SV were increased in SHRSP-fatty similarly to SHRSP. Increased deceleration time and decreased E/A ratio, and preserved fractional shortening were observed in SHRSP-fatty. Expressions of collagen type I were increased in atria and ventricle of SHRSP-fatty. SHRSP-fatty with metabolic syndrome exhibit cardiac changes, including slowed heart rate, ventricular diastolic dysfunction, and fibrosis, and atrial enlargement. SHRSP-fatty may be a useful rat model to study on cardiac abnormalities in metabolic syndrome." @default.
• W2048157068 created "2016-06-24" @default.
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• W2048157068 date "2010-01-01" @default.
• W2048157068 modified "2023-09-30" @default.
• W2048157068 title "Characterization of Cardiac Size and Function in SHRSP.Z-Leprfa/IzmDmcr Rats, a New Animal Model of Metabolic Syndrome" @default.
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• W2048157068 doi "https://doi.org/10.1248/bpb.33.1971" @default.
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