Results 151 to 160 of about 28,867 (291)

Demonstration of beat‐to‐beat, on‐demand ATP synthesis in ventricular myocytes reveals sex‐specific mitochondrial and cytosolic dynamics

The Journal of Physiology, EarlyView.
Abstract figure legend Beat‐locked mitochondrial ATP transients reveal modular, sex‐specific bioenergetic control during excitation–contraction coupling. A, each action potential activates L‐type CaV1.2 channels, producing a Ca2+ influx that triggers ryanodine receptors (RyR2) and elicits SR Ca2+ release.
Paula Rhana, Collin Matsumoto, L. Fernando Santana   +2 more
wiley   +1 more source

Human‐derived cardiac‐neural microtissues reveal catecholaminergic polymorphic ventricular tachycardia is also a disease of the sympathetic neuron

The Journal of Physiology, EarlyView.
Abstract figure legend Schematic diagram illustrating the proposed pathway in which regulatory defects might occur in sympathetic neurons derived from hiPSC in catecholaminergic polymorphic ventricular tachycardia (CPVT). Specifically, enhanced calcium transients appeared to derive from three sources: enhanced membrane excitability (due to loss of ...
Ni Li, Chenchen Zhang, Mengying Xu, YoonYoung Choi, Davi Sidarta‐Oliveira, Ruirui Dong, Xinyu Hu, Enrique M. Toledo, Cesar A. Prada‐Medina, Finbar Argus, Kun Liu, Mingyu Li, Linna Zhou, Hagan Bayley, Corey Smith, Chris Denning, Ana I. Domingos, Guoliang Hao, Dan Li, David J. Paterson   +19 more
wiley   +1 more source

Dust From Pig Confinement Facilities Bind to and Activate Skeletal Muscle Ryanodine Receptor Calcium-Release Channel (RyR1) [PDF]

, 2009
Chengju Tian, Danielle S. Fenster, Mark M. Mixan, Myron L. Toews, Deborah J. Romberger, Keshore R. Bidasee   +5 more
openalex   +1 more source

Intercalated disk structure, tissue heterogeneity and ion channel distribution modulate conduction and local calcium influx

The Journal of Physiology, EarlyView.
Abstract figure legend A, three‐dimensional representation of cardiac intercalated disk, reduced to a 100‐partition, computationally efficient network representation. B, ion dynamics within intercalated disk extracellular cleft space. C, rapid pacing leads to localized conduction block in tissue with regions of perturbed intercalated disk (ID ...
Nicolae Moise, Heather L. Struckman, James W. Smyth, Gregory S. Hoeker, Steven Poelzing, Rengasayee Veeraraghavan, Seth H. Weinberg   +6 more
wiley   +1 more source

Interactive Role of the DHPR β_1a SH3 Domain in Skeletal Muscle Excitation–Contraction Coupling

Biomolecules
Excitation–contraction (EC) coupling in skeletal muscle requires a physical interaction between the voltage-gated calcium channel, dihydropyridine receptor (DHPR), and the ryanodine receptor (RyR1) Ca2+ release channel.
Yamuna Karunasekara, Shouvik Aditya, Nicole C. Norris, Jean Cappello, Angela F. Dulhunty, Philip G. Board, Jose M. Eltit, Claudio F. Perez, Marco G. Casarotto   +8 more
doaj   +1 more source

Purified ryanodine receptor from rabbit skeletal muscle is the calcium-release channel of sarcoplasmic reticulum. [PDF]

, 1988
Jeffrey S. Smith, Toshiaki Imagawa, Jianjie Ma, Michael Fill, Kevin P. Campbell, Roberto Coronado   +5 more
openalex   +1 more source

Translating cardiovascular ion channel and Ca2+ signalling mechanisms into therapeutic insights

The Journal of Physiology, EarlyView.
Abstract figure legend This white paper integrates mechanistic discoveries across ion channel biology, Ca2+ signalling and multiscale cardiovascular physiology to highlight new opportunities for accelerating research and guiding next‐generation therapies. Printed with permission from ®Anita Impagliazzo Medical Illustration. [Correction added on 2 March
Silvia Marchianò, Miguel Martín‐Aragón Baudel, Charlotte E. R. Smith, Gonzalo Hernandez Hernandez, Donald M. Bers, Patrick M. Boyle, Dobromir Dobrev, Shanna Hamilton, Osama F. Harraz, Na Li, Thomas A. Longden, William E. Louch, Madeline Nieves‐Cintron, Matthew A. Nystoriak, Walter Lee Murfee, Przemysław B. Radwański, Swapnil K. Sonkusare, Manuel F. Navedo, Eleonora Grandi   +18 more
wiley   +1 more source

Understanding CPVT pathogenic mechanisms based on mutation location within RyR2: towards personalized medicine?

The Journal of Physiology, EarlyView.
Jean‐Pierre Benitah, Esther Zorio, Ana María Gómez   +2 more
wiley   +1 more source

When NCX switches sides: Experimental and computational insights into Ca2+ regulation in the heart

The Journal of Physiology, EarlyView.
Abstract figure legend Due to its presence inside the dyadic cleft, Na+/Ca2+ exchanger (NCX) builds a functional unit together with L‐type calcium channels and ryanodine receptors in the dyadic cleft. NCX acts bidirectionally (forward and reverse mode) dependent on extracellular calcium ([Ca2+]o) and sodium ([Na+]o) concentrations and the membrane ...
Wilhelm Neubert, Judith Hüttemeister, Paulina Sander, Nagaiah Chamakuri, Felix Hohendanner, Martin Falcke, Frank R. Heinzel   +6 more
wiley   +1 more source

Phillygenin Suppresses Glutamate Exocytosis in Rat Cerebrocortical Nerve Terminals (Synaptosomes) through the Inhibition of Ca_v2.2 Calcium Channels

Biomedicines
Glutamate is a major excitatory neurotransmitter that mediates neuronal damage in acute and chronic brain disorders. The effect and mechanism of phillygenin, a natural compound with neuroprotective potential, on glutamate release in isolated nerve ...
Ming-Yi Lee, Tzu-Yu Lin, Ya-Ying Chang, Kuan-Ming Chiu, Su-Jane Wang   +4 more
doaj   +1 more source