Myocardial disarray - Medicow
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Topic: Myocardial disarray



  
 Dilated cardiomyopathy in homozygous myosin-binding protein-C mutant mice
To elucidate the role of cardiac myosin-binding protein-C (MyBP-C) in myocardial structure and function, we have produced mice expressing altered forms of this sarcomere protein.
Homozygous mice bearing mutated MyBP-C alleles are viable but exhibit neonatal onset of a progressive dilated cardiomyopathy with prominent histopathology of myocyte hypertrophy, myofibrillar disarray, fibrosis, and dystrophic calcification.
Echocardiography of homozygous mutant mice showed left ventricular dilation and reduced contractile function at birth; myocardial hypertrophy increased as the animals matured.
http://cardiogenomics.med.harvard.edu/publication-detail?publication_id=373   (264 words)

  
 Cardiac Proteomics & Signaling Laboratory - Guang-Wu Wang, M.D., Ph. D.
Wang GW, Baines CP, Gu Y, Prabhu SD, Bhatnagar A, Ping P. Chronic exposure induces myocardial dynsfunction, myofibril disarray, and cardiomyocyte apoptosis in the mouse.
Wang GW, Kang DR, Yang Q, Wang F. Changes of NADH-methemoglobin reductase activity in erythrocytes of rats fed on grains from Keshan Disease area and the influence of selenium and vitamin E, B1.
Wang GW, Zhao YZ, Wang F. Effect of selenium on cumene hydroperoxide-induced DNA damage in cultured cardiomyocytes.
http://www.signalingmodules.org/people/wang.html   (264 words)

  
 NEJM -- Isometric cardiac contraction. a possible cause of the disorganized myocardial pattern of idiopathic hypertrophic subaortic stenosis
We examined ventricular muscle for IHSS-type muscle-fiber disarray in infant hearts in which isometric contraction would occur during development-namely, pulmonary or aortic-valve atresia with intact ventricular septum and normal atrio-ventricular valves.
a possible cause of the disorganized myocardial pattern of idiopathic hypertrophic subaortic stenosis
Thus, cardiac muscle-cell disorientation similar to IHSS occurs in infant ventricles with outflow-tract obstruction.
http://content.nejm.org/cgi/content/short/296/3/135   (264 words)

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