Results 61 to 70 of about 93,083 (312)

Cardiac myocyte diversity and a fibroblast network in the junctional region of the zebrafish heart revealed by transmission and serial block-face scanning electron microscopy. [PDF]

open access: yesPLoS ONE, 2013
The zebrafish has emerged as an important model of heart development and regeneration. While the structural characteristics of the developing and adult zebrafish ventricle have been previously studied, little attention has been paid to the nature of the ...
Pascal J Lafontant   +5 more
doaj   +1 more source

Electrophysiological effects of 5-hydroxytryptamine on isolated human atrial myocytes, and the influence of chronic beta-adrenoceptor blockade [PDF]

open access: yes, 2003
<b>1.</b> 5-Hydroxytryptamine (5-HT) has been postulated to play a proarrhythmic role in the human atria via stimulation of 5-HT<sub>4</sub> receptors.
Kane, K.A.   +3 more
core   +1 more source

Cavity Microelectrode Arrays for Electrical Recordings From Neurons

open access: yesAdvanced Electronic Materials, EarlyView.
Microelectrode arrays (MEAs) are used to study electrophysiological activity. However, their signals are small with high noise. By adding a 100‐nanometer‐high cavity above the electrode, which reduces impedance without affecting resolution, we improve signal quality.
Johannes Lewen   +2 more
wiley   +1 more source

Incorporated fish oil fatty acids prevent action potential shortening induced by circulating fish oil fatty acids

open access: yesFrontiers in Physiology, 2010
Increased consumption of fatty fish, rich in omega-3 polyunsaturated fatty acids (3-PUFAs) reduces the severity and number of arrhythmias. Long term 3-PUFA-intake modulates the activity of several cardiac ion channels leading to cardiac action ...
Hester M Den Ruijter   +2 more
doaj   +1 more source

Characterizing Adrenergic Regulation of Glucose Transporter 4-Mediated Glucose Uptake and Metabolism in the Heart

open access: yesJACC: Basic to Translational Science, 2023
Summary: Whereas adrenergic stimulation promotes cardiac function that demands more fuel and energy, how this receptor controls cardiac glucose metabolism is not defined.
Aleksandra Jovanovic, PhD   +8 more
doaj   +1 more source

Evaluation of cardiac histology and cell death markers during the progression of diabetes in a streptozotocin‐induced diabetes rat model

open access: yesAnimal Models and Experimental Medicine, EarlyView.
Daily insulin administration in streptozotocin‐induced diabetic rats prevented cardiac damage associated with diabetic cardiomyopathy, including hypertrophy, fibrosis, and expression of cell death markers, at 12 weeks. However, cyclophilin D, a marker of mitochondrial permeability transition pore‐opening‐associated cell death (necrosis), was observed ...
Tamara Sáez   +5 more
wiley   +1 more source

Cell Death in the Cardiac Myocyte

open access: yesBiological & Pharmaceutical Bulletin, 2015
Loss of cardiac myocytes plays a critical role in the pathogenesis of cardiovascular disorders. A decrease in the number of cardiac myocytes in cardiac diseases results in sustained, irreversible contractile failure of myocardium. Therefore prevention of cardiac cell death is a potential therapeutic strategy for various heart diseases.
Marunouchi, Tetsuro, Tanonaka, Kouichi
openaire   +3 more sources

The self-maintaining nature of ventricular fibrillation : contribution of L-type Ca²+ channels and Na+/Ca²+ exchange to cardiomyocyte Ca²+ overload in ventricular fibrillation : surface fluorescence study in isolated perfused rat hearts [PDF]

open access: yes, 2004
Approximately 40% of all deaths in Switzerland are due to cardiovascular diseases.1 An important part of these deaths happen because of life-threatening cardiac arrhythmias.
Driamov, Sergey
core   +1 more source

Machine Learning Models of Phase Contrast Images Predict Efficiency of Human Pluripotent Stem Cell Differentiation to Cardiomyocytes

open access: yesBiotechnology and Bioengineering, EarlyView.
Human pluripotent stem cells were differentiated to cTnT+ cardiomyocytes and imaged throughout the process using phase contrast. We predicted differentiation efficiency (cTnT+ area) from phase contrast and compared model performance with a live‐cell cTnT‐GFP reporter.
Austin K. Feeney   +6 more
wiley   +1 more source

ATP-Sensitive Potassium Channel Currents in Eccentrically Hypertrophied Cardiac Myocytes of Volume-Overloaded Rats

open access: yesInternational Journal of Cell Biology, 2011
ATP-sensitive potassium channels (KATP) protect the myocardium from hypertrophy induced by pressure-overloading. In this study, we determined the effects of these channels in volume-overloading.
Zikiar V. Alvin   +3 more
doaj   +1 more source

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