homeostasis/metabolism
• left atria often contains thombi
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mortality/aging
• mice die prematurely at 12-14 months of age
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cardiovascular system
• enlarged cardiac myocytes contain big hyperchromatic nuclei, intracellular vacuolization, and interstitial fibrosis
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• the right atrial weight is elevated by 12 months of age
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• the left atria is enlarged by 12 months of age and left atrial diameter is increased by about 50%
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• the ventricular weight/body weight ratio is increased
• a group of 12-14 month old mice exhibit dilated ventricles and increased ventricle weight
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• a group of 12-14 month old mice exhibit dilated ventricles and increased ventricle weight while a subset of mice at this age do not show increased ventricular mass and dilation
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• enlarged cardiac myocytes exhibit interstitial fibrosis
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• the 4 chambers of 12.5 month old hearts are enlarged
• age of onset of dilated cardiomyopathy ranges between 11 and 13 months of age and the phenotype progresses to end-stage dilation with a concomitant reduction in fractional shortening within 2-3 months
• however, left ventricular wall thickness remains unchanged indicating no initial hypertrophic response
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• decrease in systolic contractile function, with a reduction in fractional shortening below 15%
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• M-mode and echocardiography show increases in left ventricular end-systolic and end-diastolic diameters at 12-14 months of age
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• heart rates are slower in anaesthetized mice and in conscious mice during blood pressure recordings
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• mice show signs of left and right heart failure at end-stage
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muscle
• enlarged cardiac myocytes contain big hyperchromatic nuclei, intracellular vacuolization, and interstitial fibrosis
|
• the 4 chambers of 12.5 month old hearts are enlarged
• age of onset of dilated cardiomyopathy ranges between 11 and 13 months of age and the phenotype progresses to end-stage dilation with a concomitant reduction in fractional shortening within 2-3 months
• however, left ventricular wall thickness remains unchanged indicating no initial hypertrophic response
|
• decrease in systolic contractile function, with a reduction in fractional shortening below 15%
|
cellular
• enlarged cardiac myocytes exhibit interstitial fibrosis
|
Mouse Models of Human Disease |
DO ID | OMIM ID(s) | Ref(s) | |
dilated cardiomyopathy | DOID:12930 |
OMIM:PS115200 |
J:127756 |