Results 121 to 130 of about 20,886 (213)

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

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

Mitochondrial permeability transition in skeletal muscle phenocopies muscle alterations seen in cancer cachexia and other wasting conditions

The Journal of Physiology, EarlyView.
Abstract figure legend Skeletal muscle wasting conditions are characterized by muscle fibre atrophy, mitochondrial respiratory dysfunction, mitochondrial depletion and fragmentation of acetylcholine receptor (AChR) cluster at the neuromuscular junction.
Maya Semel, Cole Lukasiewicz, Sarah Skinner, Mark R. Viggars, Sung Gi Noh, Martin Picard, Abbey‐Gale Mannings, Michael S. Cohen, Dennis W. Wolan, Terence E. Ryan, Russell T. Hepple   +10 more
wiley   +1 more source

Intracellular mechanosensation in intestinal smooth muscle: Piezo1 complexes amplify signalling beyond the surface

The Journal of Physiology, EarlyView.
Abstract figure legend Mechanosensation is not confined to the cell surface. In intestinal smooth muscle Piezo1 is predominantly intracellular (86%), where it forms a nanoscale (<40 nm) complex at the sarcoplasmic reticulum (SR)–plasma membrane junction. Within this sensor–amplifier–effector axis intra‐Piezo1 is the sensor that detects force at the SR,
Geoanna M. Bautista, Declan Manning, Emily C. Lieu, Stephanie I. Ugochukwu, Collin Matsumoto, Joshua P. Tulman, Miguel Martin‐Aragon Baudel, Nuria Daghbouche‐Rubio, Steven J. McElroy, Sal A. Baker, Manuel F. Navedo, L. Fernando Santana   +11 more
wiley   +1 more source

The ODYSSEY-HCM and MAPLE-HCM studies: the role of cardiac myosin inhibitors in hypertrophic cardiomyopathy (obstructive and non-obstructive). [PDF]

Eur Heart J Suppl
Biagini E, Schiavo MA.
europepmc   +1 more source

Incidence of Ventricular Arrhythmias and Sudden Cardiac Death with Cardiac Myosin Inhibitors in Hypertrophic Cardiomyopathy: A Meta-Analysis of Randomized Controlled Trials. [PDF]

J Pers Med
Katic J, Bulum T, Borovac JA.
europepmc   +1 more source

β‐hydroxy‐β‐methylbutyrate improves fast‐twitch muscle function, histopathology and mitochondrial respiration in the D2.mdx dystrophic mouse

The Journal of Physiology, EarlyView.
Abstract figure legend β‐Hydroxy‐β‐methylbutyrate (HMB) enhances fast‐twitch muscle and mitochondrial function in D2.mdx mice. Male DBA/2J (wild‐type) and D2.mdx mice aged 3 or 6 months received daily β‐hydroxy‐β‐methylbutyrate (HMB; 1 mg g−1 day−1) via drinking water for 8 weeks. Fast‐twitch extensor digitorum longus (EDL) and slow‐twitch soleus (SOL)
Nicholas Giourmas, Hannah Lalunio, Memphis Calzoni, Ryan Bagaric, Craig A. Goodman, Alan Hayes   +5 more
wiley   +1 more source

Channelrhodopsin ion selectivity determines mechanisms and efficacy of optogenetic defibrillation in human atria and ventricles

The Journal of Physiology, EarlyView.
Abstract figure legend A, we used in silico models of human cardiomyocytes and microelectrode recordings on transgenic zebrafish hearts to study electrophysiology during optogenetic perturbations. Specifically, we compared effects of three distinct classes of channelrhodopsins: the cation non‐selective Chlamydomonas reinhardtii channelrhodopsin‐2 (ChR2)
Sophia Ohnemus, Albert Dasí, Ahmed F. Ramadan, Joachim Greiner, Eike M. Wülfers, Matthew R. Stoyek, Linda Tillert, Johannes Vierock, T. Alexander Quinn, Peter Kohl, Patrick M. Boyle, Viviane Timmermann, Franziska Schneider‐Warme   +12 more
wiley   +1 more source

Correction: Amr et al. Assessing the Applicability of Cardiac Myosin Inhibitors for Hypertrophic Cardiomyopathy Management in a Large Single Center Cohort. Reviews in Cardiovascular Medicine. 2024; 25(6): 225. [PDF]

Rev Cardiovasc Med
Amr A, Kayvanpour E, Reich C, Koelemen J, Asokan S, Frey N, Meder B, Sedaghat-Hamedani F.   +7 more
europepmc   +1 more source