Results 111 to 120 of about 19,097 (250)

High-yield production and characterization of functional Kir2.1 ion channel using E. coli cell-free protein synthesis system

Synthetic and Systems Biotechnology
A family of inwardly-rectifying potassium (Kir) channels plays a key role in the regulation of cellular potassium (K+) balance, affecting muscle, nerve and immune function.
Tianqi Zhou, Zitong Zhao, Huizi Zhang, Yunyang Song, Yifeng Yin, Fanghui Wu, Yanli Liu, Dan Xu   +7 more
doaj   +1 more source

Sympathetic stimulation can compensate for hypocalcaemia‐induced bradycardia in human and rabbit sinoatrial node cells

The Journal of Physiology, EarlyView.
Abstract figure legend AC: adenylyl cyclase, APT: adenosine triphosphate, AMP: adenosine monophosphate, cAMP: cyclic adenosine monophosphate, PDE: phosphodiesterase, PKA: protein kinase A, PPT: protein phosphatase, P: phosphorylation, RyR: ryanodine receptor, SERCA: sarcoplasmic/endoplasmic reticulum Ca2+‐adenosine triphosphatase, SR: sarcoplasmic ...
Moritz Linder, Tomas Stary, Gergő Bitay, Norbert Nagy, Axel Loewe   +4 more
wiley   +1 more source

Mathematical model of the zebrafish ventricular cardiomyocyte action potential and calcium transient

The Journal of Physiology, EarlyView.
Abstract figure legend This study presents the development and validation of the first biophysically detailed computational model of the zebrafish ventricular action potential (AP). The model is based on a human cardiomyocyte framework and reparameterized using published and newly generated patch‐clamp recordings of zebrafish ionic currents.
Ludovica Cestariolo, Zachary D. Long, Arie O. Verkerk, Jose M. Ferrero, T. Alexander Quinn, Jose F. Rodriguez Matas   +5 more
wiley   +1 more source

Proton block and voltage gating are potassium-dependent in the cardiac leak channel Kcnk3. [PDF]

, 2000
Potassium leak conductances were recently revealed to exist as independent molecular entities. Here, the genomic structure, cardiac localization, and biophysical properties of a murine example are considered.
Buck, ME, Butler, MH, Gallagher, PG, Goldstein, SA, Lopes, CM   +4 more
core  

Electrophysiological characterization of pre‐adolescents born with intrauterine growth restriction: insights from clinical and computational data

The Journal of Physiology, EarlyView.
Abstract figure legend Depolarization and repolarization duration analysis was conducted in preadolescent groups with IUGR and controls using a 12‐lead ECG. Principal component analysis was applied over the 12‐lead ECGs to generate spatially transformed leads better suited for robust ECG fiducial points detection.
Freddy L. Bueno‐Palomeque, Ernesto Zacur, Esther Pueyo, Fàtima Crispi, Pablo Laguna, Ana Mincholé   +5 more
wiley   +1 more source

Pharmacological rescue of trafficking-impaired ATP-sensitive potassium channels

Frontiers in Physiology, 2013
ATP-sensitive potassium (KATP) channels link cell metabolism to membrane excitability and are involved in a wide range of physiological processes including hormone secretion, control of vascular tone, and protection of cardiac and neuronal cells against ...
Gregory M. Martin, Pei-Chun eChen, Prasanna eDevaraneni, Show-Ling eShyng   +3 more
doaj   +1 more source

Endogenous RGS proteins enhance acute desensitization of GABAB receptor-activated GIRK currents in HEK-293T cells [PDF]

, 2018
The coupling of GABAB receptors to G-protein-gated inwardly rectifying potassium (GIRK) channels constitutes an important inhibitory pathway in the brain.
Berton, Frédérique, Lüscher, Christian, Mutneja, Manpreet, Slesinger, Paul, Suen, Ka-Fai   +4 more
core  

Electromechanical modelling and simulation of human‐induced pluripotent stem cell‐derived cardiomyocytes predict drug‐induced contractility effects

The Journal of Physiology, EarlyView.
Abstract figure legend A study described in this paper describes a new tool for hiPSC‐CM electromechanical behaviour simulations using mathematical modelling. The model enables in silico assays making drug testing quick, comprehensive and accurate. New hiPSC‐CM models can be used as a platform to integrate in vitro and in silico findings.
Milda Folkmanaite, Xin Zhou, Andreas Koschinski, Wan‐Hua Hong, Marilù Casini, Manuel Koch, Ursula Ravens, Remi Peyronnet, Manuela Zaccolo, Blanca Rodriguez   +9 more
wiley   +1 more source

Deciphering pro‐arrhythmogenic mechanisms of EPAC in human atrial cardiomyocytes

The Journal of Physiology, EarlyView.
Abstract figure legend This study aimed to investigate the effect of exchange proteins directly activated by cAMP (EPAC) on the regulation of human atrial cardiomyocyte electrophysiology and their potential involvement in the onset of atrial fibrillation (AF).
Arthur Boileve, Margaux Aize, Maximin Détrait, Laura Brard, Adrien Leboyer, Pierre‐Antoine Dupont, Alexandre Lebrun, Vladimir Saplacan, Christophe Simard, Fabien Brette, Frank Lezoualc'h, Laurent Sallé   +11 more
wiley   +1 more source

Mechanistic insights into sex differences in atrial electrophysiology and arrhythmia vulnerability through sex‐specific computational models

The Journal of Physiology, EarlyView.
Abstract figure legend Sex‐specific models of the human atrial myocyte in normal sinus rhythm (nSR) and chronic atrial fibrillation (cAF) revealed increased alternans susceptibility in cAF males and DADs in females, driven primarily by ICaL and ryanodine receptor remodelling.
Nathaniel T. Herrera, Haibo Ni, Charlotte E. R. Smith, Yixuan Wu, Dobromir Dobrev, Stefano Morotti, Eleonora Grandi   +6 more
wiley   +1 more source