Results 121 to 130 of about 19,368 (234)

Threonine 180 Is Required for G-protein-coupled Receptor Kinase 3- and β-Arrestin 2-mediated Desensitization of the µ-Opioid Receptor in Xenopus Oocytes [PDF]

, 2001
To determine the sites in the µ-opioid receptor (MOR) critical for agonist-dependent desensitization, we constructed and coexpressed MORs lacking potential phosphorylation sites along with G-protein activated inwardly rectifying potassium channels ...
Celvert, Jeremy P., Chavkin, Charles, Gurevich, Vsevolod V., Kovoor, Abraham, Lowe, Janet   +4 more
core  

Blebbistatin reduces calcium buffering in cardiomyocytes: Consequences for cellular electrophysiology

The Journal of Physiology, EarlyView.
Abstract figure legend Blebbistatin reduces Ca2+ buffering in induced pluripotent stem cell‐derived atrial cardiomyocytes. Blebbistatin, a widely used excitation–contraction uncoupling agent, decreases calcium (Ca2+) buffer affinity (increased buffer dissociation constant), leading to elevated diastolic Ca2+ levels, increased sarcoplasmic reticulum Ca2+
Izzatullo Sobitov, Katharina Ritzenhoff, Marie Gaulrapp, Lea Becker, Aiste Liutkute, Fitzwilliam Seibertz, Funsho E. Fakuade, Fleur E. Mason, Niels Voigt   +8 more
wiley   +1 more source

What have we learned from two-pore potassium channels? Their molecular configuration and function in the human heart [PDF]

, 2012
Two-pore domain potassium channels (K2P) control excitability, stabilize the resting membrane potential below firing threshold, and accelerate repolarisation in different cells.
Benyhe, Sándor, Boyett, Marc, Dobrzynski, Halina, Dézsi, László, Erdélyi, Lajos, Papp, Gyula, Szalontai, Balázs, Szüts, Viktória, Varró, András, Vágvölgyi, Csaba, Zhang, Henggui, Ötvös, Ferenc   +11 more
core  

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

Ketones prevent oxidative impairment of hippocampal synaptic integrity through KATP channels.

PLoS ONE, 2015
Dietary and metabolic therapies are increasingly being considered for a variety of neurological disorders, based in part on growing evidence for the neuroprotective properties of the ketogenic diet (KD) and ketones.
Do Young Kim, Mohammed G Abdelwahab, Soo Han Lee, Derek O'Neill, Roger J Thompson, Henry J Duff, Patrick G Sullivan, Jong M Rho   +7 more
doaj   +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

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

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

ATP-sensitive inwardly rectifying potassium channel regulation of viral infections in honey bees

Scientific Reports, 2017
Honey bees are economically important pollinators of a wide variety of crops that have attracted the attention of both researchers and the public alike due to unusual declines in the numbers of managed colonies in some parts of the world.
Scott T. O’Neal, Daniel R. Swale, Troy D. Anderson   +2 more
doaj   +1 more source

A model of β‐adrenergic stimulation in human ventricular cells for tissue‐scale simulations of sympathetically modulated tachycardias

The Journal of Physiology, EarlyView.
Abstract figure legend Modelling β‐adrenergic stimulation in sympathetically remodelled ventricular substrates. Myocardial infarction could result in sympathetic remodelling in ventricular tissues, which affects arrhythmia dynamics. However sympathetic remodelling is challenging to control experimentally; therefore we created an ionic model that ...
Kelly Zhang, Karl Magtibay, Natalia Trayanova, Edward Vigmond   +3 more
wiley   +1 more source