We propose a mathematic model of muscle cell membrane based on thin-walled elastic rod theory. A deformation occurs in rodents’ skeletal and cardiac cells during a period of antiorthostatic suspension. We carried out a quantitative evaluation of the deformation using this model. The calculations showed the deformation in cardiac cells to be greater than in skeletal ones. This data corresponds t...

To develop morphological criteria which can be applied systematically for the identification of isolated cardiac and vascular muscle cells in mammalian and avian primary cultures, we have correlated structural and staining properties with excitability, contraction, and norepinephrine sensitivity of isolated muscle cells. The primary cultures of cardiac and vascular muscle contained muscle cells...

Skeletal muscle cell-derived grafts in the heart may benefit myocardial performance after infarction. Several studies have suggested that skeletal muscle stem cells (satellite cells) from adult muscle undergo transdifferentiation into cardiomyocytes after grafting into the heart, but expression of cardiac markers in graft cells has not been rigorously confirmed. To determine the fate of satelli...

Skeletal muscle derived stem cells (MDSCs) transplanted into injured myocardium can differentiate into fast skeletal muscle specific myosin heavy chain (sk-fMHC) and cardiac specific troponin-I (cTn-I) positive cells sustaining recipient myocardial function. We have recently found that MDSCs differentiate into a cardiomyocyte phenotype within a three-dimensional gel bioreactor. It is generally ...

abstract background and objective: it has been shown that oxidative stress increases in diabetes and it has an important role in its development and subsequent complications. thus, the aim of this study was to investigate the effect of acute resistance exercise on oxidative stress in skeletal muscle and cardiac tissues of streptozotocin-induced diabetic rats. materials and methods: twenty male ...

Abstract We study the dynamics of action potentials some electrically excitable cells: neurons and cardiac muscle cells. Bursting, following a fast–slow dynamics, is most characteristic behavior these dynamical systems, number spikes may change due to spike-adding phenomenon. Using analytical numerical methods we give, by focusing on paradigmatic 3D Hindmarsh–Rose neuron model, review recent re...

Telocytes (TCs) are cells defined by their long and moniliform processes termed telopodes. They were previously identified in the endocardium and express neural markers, such as nestin and neuron-specific enolase (NSE). Previous studies found a positive expression of neuro-filaments in endocardial endothelial cells, and a positive expression of nestin in cardiac side population (CSP) progenitor...

In acute rheumatic heart disease, lysis of cardiac muscle fibres with or without retention of sarcolemma is found to be the most damaging feature in many cases. In deeper myocardium the cellular lysis often forms anastomosing clefts or sinus-like spaces between surviving muscle bundles and in the outer portion of myocardium cellular lysis may leave the sarcolemma more or less intact. From lysin...

Ussher JR, Jaswal JS, Wagg CS, Armstrong HE, Lopaschuk DG, Keung W, Lopaschuk GD. Role of the atypical protein kinase C in regulation of 5 -AMP-activated protein kinase in cardiac and skeletal muscle. Am J Physiol Endocrinol Metab 297: E349–E357, 2009; doi:10.1152/ajpendo.00009.2009.—During metabolic stress, phosphorylation and activation of 5 -AMP-activated protein kinase (AMPK) becomes a majo...