Results 41 to 50 of about 89,808 (272)

Simultaneous assessment of mechanical and electrical function in Langendorff-perfused ex-vivo mouse hearts

Frontiers in Cardiovascular Medicine, 2023
BackgroundThe Langendorff-perfused ex-vivo isolated heart model has been extensively used to study cardiac function for many years. However, electrical and mechanical function are often studied separately—despite growing proof of a complex electro ...
Julien Louradour, Rahel Ottersberg, Rahel Ottersberg, Adrian Segiser, Adrian Segiser, Agnieszka Olejnik, Agnieszka Olejnik, Berenice Martínez-Salazar, Berenice Martínez-Salazar, Mark Siegrist, Mark Siegrist, Manuel Egle, Manuel Egle, Miriam Barbieri, Saranda Nimani, Nicolò Alerni, Yvonne Döring, Yvonne Döring, Yvonne Döring, Yvonne Döring, Katja E. Odening, Katja E. Odening, Sarah Longnus, Sarah Longnus   +23 more
doaj   +1 more source

Conduction defects and arrhythmias in mdx mice are not associated with a degeneration of the cardiac Purkinje network

Frontiers in Physiology
Duchenne muscular dystrophy (DMD) is a severe X-chromosomal disease characterised by progressive muscle weakness and degeneration. Cardiac involvement is inevitable in DMD patients and ventricular arrhythmias are a high-risk factor for mortality in these
Juliette Vahdat, Jakob Sauer, Jessica Marksteiner, Karlheinz Hilber, Lucile Miquerol   +4 more
doaj   +1 more source

Identification and functional characterization of cardiac pacemaker cells in zebrafish.

PLoS ONE, 2012
In the mammalian heart a conduction system of nodes and conducting cells generates and transduces the electrical signals evoking myocardial contractions. Specialized pacemaker cells initiating and controlling cardiac contraction rhythmicity are localized
Federico Tessadori, Jan Hendrik van Weerd, Silja B Burkhard, Arie O Verkerk, Emma de Pater, Bastiaan J Boukens, Aryan Vink, Vincent M Christoffels, Jeroen Bakkers   +8 more
doaj   +1 more source

Hardware implementation for cardiac electrical excitation and conduction using an FPGA [PDF]

, 2017
Contraction of the heart is controlled by electrical excitations of cardiac cell membranes. The electrical excitations of the cells and their propagation in the heart tissue provide a basis of the physiological function of the heart through the cardiac ...
Adon, Nur Atiqah
core  

Gap junction reduction in cardiomyocytes following transforming growth factor- beta treatment and Trypanosoma cruzi infection [PDF]

, 2009
Gap junction connexin-43 (Cx43) molecules are responsible for electrical impulse conduction in the heart and are affected by transforming growth factor-beta (TGF-beta).
Becker, D, Burnstock, G, Coutinho-Silva, R, de Araujo-Jorge, TC, Feige, JJ, Higuchi, MD, Waghabi, MC   +6 more
core   +2 more sources

Thermoreflectance Detection of Point Defects Resulting from Focused Ion Beam Milling

Advanced Engineering Materials, EarlyView.
Focused ion beam (FIB) milling is a common tool for nanoscale material processing, however irradiation damage, redeposition, and contamination can occur. We use several characterization tools to show FIB‐induced effects beyond 1 mm from the milled area.
Thomas W. Pfeifer, Eric R. Hoglund, Anton V. Ievlev, Patrick E. Hopkins   +3 more
wiley   +1 more source

The Functional and Imaging Implications of Left Bundle Branch Pacing in Ischemic Cardiomyopathy

Biomolecules
Heart failure with reduced ejection fraction due to ischemic cardiomyopathy remains a significant clinical challenge. Electrical conduction delays exacerbate symptoms by causing uncoordinated contractions, reducing pumping efficiency, and increasing ...
Fulvio Cacciapuoti, Ciro Mauro, Ilaria Caso, Salvatore Crispo, Rossella Gottilla, Valentina Capone, Saverio Ambrosino, Ciro Pirozzi, Orlando Munciguerra, Mario Volpicelli   +9 more
doaj   +1 more source

Transventricular Left Bundle Branch Pacing

Український журнал серцево-судинної хірургії, 2022
Background. Implementation of conduction system permanent pacing methods in patients with cardiac bradyarrhythmias allows to maintain the physiological sequence of excitation and contraction of the ventricles and to avoid the development of heart failure
Eugene O. Perepeka, Borys B. Kravchuk, Oksana M. Paratsii, Liliana M. Hrubyak, Volodymyr L. Leonchuk, Maryna M. Sychyk   +5 more
doaj   +1 more source

On the detection of myocardial scar based on ECG/VCG analysis

, 2013
In this paper, we address the problem of detecting the presence of myocardial scar from standard ECG/VCG recordings, giving effort to develop a screening system for the early detection of scar in the point-of-care.
Curzen, Nick, Dima, Sofia-Maria, Gialelis, John, Maharatna, Koushik, Mazomenos, Evangelos B., Morgan, John, Panagiotou, Christos, Rosengarten, James   +7 more
core   +1 more source

Planar Solid‐State Nanopores Toward Scalable Nanofluidic Integration Based on CMOS Technology

Advanced Engineering Materials, EarlyView.
We present a scalable silicon‐based fabrication strategy for planar solid‐state nanopores to enable their integration with complex nanofluidic systems. Prototype devices demonstrate normal voltage‐current characteristics, good noise performance, and appreciable streaming currents. Our CMOS‐compatible fabrication process offers precise geometric control
Ngan Hoang Pham, Chenyu Wen, Mohammad Hadi Khaksaran, Won‐Yong Lee, Javier Cruz, Klas Hjort, Dongping Wu, Shi‐Li Zhang   +7 more
wiley   +1 more source