Results 121 to 130 of about 25,964,170 (220)

Caenorhabditis elegans as an in vivo model system for human inherited primary arrhythmia syndromes

The Journal of Physiology, EarlyView.
Abstract figure legend Most genes involved in inherited primary arrhythmia syndromes (IPAS) are conserved in Caenorhabditis elegans, where genetic manipulation enables functional characterization of variants, identification of regulatory proteins, and in vivo drug testing.
Antoine Delinière, Thomas Boulin, Maëlle Jospin, Alexandre Janin, Gilles Millat, Philippe Chevalier, Olga Andrini   +6 more
wiley   +1 more source

Beta(2)-adrenergic receptor desensitization, internalization and phosphorylation in response to full and partial agonists

, 1997
The objective of this study is to test the hypothesis that partial agonists produce less desensitization because they generate less of the active conformation of the $\beta\sb2$-adrenergic receptor ($\beta$AR) (R*) and in turn cause less $\beta$AR ...
January, Bridgette Goodwin
core   +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

An age‐associated decline in the role of the sarcoplasmic reticulum and associated calcium‐handling proteins sets the pace for sinoatrial node function

The Journal of Physiology, EarlyView.
Abstract figure legend Stable, responsive pacemaking in the sinoatrial node is driven by the activity of the funny current (membrane clock), interplay of calcium cycling and release from the sarcoendoplasmic reticulum with depolarising sodium‐calcium exchange current (calcium clock). With increasing age, key proteins associated with calcium cycling are
Sandra A. Jones, Fiona S. Godbeer, Matthew K. Lancaster   +2 more
wiley   +1 more source

Scaling temporal resolution from mice to humans: Challenges and innovations in preclinical imaging of translational models

The Journal of Physiology, EarlyView.
Abstract figure legend Temporal scaling physiology differs significantly between mice and humans. Mice have higher metabolism, heart and respiratory rate, as well as faster blood flow rates, brain activity and physiological dynamics over time. These differences influence the temporal resolution needed in preclinical imaging of mouse models to ...
Sara Gargiulo, Matteo Gramanzini
wiley   +1 more source

Δ9 Tetrahydrocannabinol and cannabis extracts differentially improve adipoinsular dysfunction in diet‐induced obesity

The Journal of Physiology, EarlyView.
Abstract figure legend THC and extract administered to diet‐induced obese mice reduced body weight and fat storage. Extract, but not THC, improved glucose clearance by a mechanism that may include restoring adipoinsular function. Abstract Diet‐induced obesity (DIO) is associated with dysregulated adipoinsular axis and endocannabinoid system (eCBS ...
Bryant Avalos, Martin Olmos, Courtney P. Wood, Camila Alvarez, Haley M. Read, Parima Udompholkul, Theodore Garland Jr, Nicholas V. DiPatrizio   +7 more
wiley   +1 more source

Mechanisms reducing parasympathetic activity in chronic hypoxia

The Journal of Physiology, EarlyView.
Abstract figure legend Parasympathetic activity is reduced in chronic hypoxia, but the underlying mechanism(s) are unclear. Using β‐adrenergic blockade to isolate parasympathetic control of heart rate at sea level and after 9‐12 days at high altitude, we investigated whether (i) chemoreflex activation, (ii) increased pulmonary ventilation and/or (iii ...
Lauren E. Maier, Andrew Douglas, Katharine Foster, Elliott J. Jenkins, Liam D. Corr, Peter Rasmussen, James Anholm, Travis D. Gibbons, Phil N. Ainslie, Mike Stembridge, Christoph Siebenmann   +10 more
wiley   +1 more source

Regional electrical differences and arrhythmia in the rat atria: Role of sympathetic nerve distribution and function

The Journal of Physiology, EarlyView.
Abstract figure legend Atrial fibrillation commonly develops in the left atrium and pulmonary veins (PVs), and can be triggered by sympathetic nerve activity. Here, we examined regional atrial differences in sympathetic nerve distribution and function in the rat.
James Saleeb‐Mousa, Manish Kalla, Neil Herring, Christopher O'Shea, Andrew M. Coney, Keith L. Brain, Andrew P. Holmes   +6 more
wiley   +1 more source

hERG1 channels and potential therapeutics for long QT syndrome

The Journal of Physiology, EarlyView.
Abstract figure legend Prolonged QT results from hERG1 channel dysfunction. (A) Physiological anterograde trafficking of hERG1 channels to the plasma membrane, leading to a normal electrocardiogram. (B) Prolonged QT results from the presence of fewer hERG1 channels on the plasma membrane due to decreased anterograde trafficking or reduced function due ...
Elizabeth H. Schneider, Kelly A. Aromolaran, Michael C. Sanguinetti, Ademuyiwa S. Aromolaran   +3 more
wiley   +1 more source