Results 261 to 270 of about 144,200 (309)
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Mechanotransduction in Cardiac Myocytes
Annals of the New York Academy of Sciences, 2004Abstract: Cardiac myocytes react to diverse mechanical demands with a multitude of transient and long‐term responses to normalize the cellular mechanical environment. Several stretch‐activated signaling pathways have been identified, most prominently guanine nucleotide binding proteins (G‐proteins), mitogen‐activated protein kinases (MAPK), Janus ...
Jan, Lammerding +2 more
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Cardiac Myocyte Terminal Differentiation
Annals of the New York Academy of Sciences, 1995The exact mechanism of terminal differentiation in cardiac myocytes is currently unknown. Studies in the skeletal muscle system provided a model where muscle lineage termination gene directly interacts with Rb to produce and maintain the terminally differentiated state. This interaction provided the critical components for the lock in cell cycle arrest
S K, Tam +3 more
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Myocyte Growth and Cardiac Repair
Journal of Molecular and Cellular Cardiology, 2002Introduced several decades ago, the dogma persists that ventricular myocytes are terminally differentiated cells and cardiac repair by myocyte regeneration is completely inhibited shortly after birth. On the basis that cardiac myocytes are unable to divide in the adult heart, myocyte growth under physiologic and pathologic conditions is believed to be ...
Piero, Anversa +3 more
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Gene transfer in cardiac myocytes
Surgical Clinics of North America, 2004Congestive heart failure (CHF) represents an enormous clinical problem and remains a leading cause of death despite advances in treatment. New treatments significantly impact mortality and disease course; they do not cure the underlying pathology. Gene transfer, the ability to genetically reprogram the heart in relevant cardiovascular disease models ...
Babar B, Chaudhri +3 more
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Microtubules in Cardiac Myocytes
1988Publisher Summary This chapter describes the distribution of microtubules (MTs) in various physiopathological states and of their involvement in a broad spectrum of cellular processes. MTs, like actin filaments, are made up of globular protein subunits that can assemble and disassemble rapidly in the cell.
L, Rappaport, J L, Samuel
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Electrical stimulation of cardiac myocytes
Annals of Biomedical Engineering, 1995The influence of nonuniform cell shape and field orientation on the field stimulation thresholds of cardiac myocytes was studied both experimentally and computationally. The percent change in excitation threshold, which was studied with patch clamp technique, was found to be 182 +/- 83.1% (mean +/- SD) higher when the electric field (EF) was parallel ...
R, Ranjan, N V, Thakor
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Peroxynitrite-induced cardiac myocyte injury
Free Radical Biology and Medicine, 1996The effects of peroxynitrite (ONOO-) on cultured cardiac myocytes were examined by simultaneous measurements of intracellular Ca2+ ([Ca2+]i) and contractile function. On exposure to 0.2 mM ONOO-, [Ca2+]i increased to beyond the systolic level within 5 min with a concomitant decrease in spontaneous contraction of myocytes followed by complete arrest ...
H, Ishida +4 more
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Surface cables of cardiac myocytes
Journal of Molecular and Cellular Cardiology, 1980Abstract Heart muscle cells prepared by mechanical disaggregation were seen by transmission electron microscopy (TEM) to possess an intact glycocalyx. Scanning electron microscopy (SEM) studies of the surface of these cells revealed longitudinally oriented cables, 10 to 12 nm thick.
J, Orenstein, D, Hogan, S, Bloom
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How to isolate cardiac myocytes
Cardiovascular Research, 1994A complete technique is described for the isolation of myocytes from mammalian hearts using the Langendorff perfusion technique. The use of calcium-free solution containing collagenase and protease, followed by low calcium solution, consistently results in a large number of calcium tolerant myocytes which are well suited for long periods of ...
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Ephaptic Coupling in Cardiac Myocytes
IEEE Transactions on Biomedical Engineering, 2013While it is widely believed that conduction in cardiac tissue is regulated by gap junctions, recent experimental evidence suggests that the extracellular space may play a significant role in action potential propagation. Cardiac tissue with low gap junctional coupling still exhibits conduction, with conflicting degrees of slowing that may be due to ...
Joyce, Lin, James P, Keener
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