Results 161 to 170 of about 126,909 (281)

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

Angiotensin‐converting enzyme and exercise adaptations: Genetic variability, pharmacological modulation and future directions

The Journal of Physiology, EarlyView.
Abstract figure legend ACE I/D genotype, enzyme activity and integrated physiological adaptations. Upper panel: Conceptual framework linking the ACE I/D polymorphism (left) with circulating/tissue ACE activity (centre; violin plots based on hypothetical data for illustration) and strength/power versus endurance phenotypes (right).
Tórur Sjúrðarson, Nikolai B. Nordsborg   +1 more
wiley   +1 more source

Insights from electromechanical simulations to assess omecamtiv mecarbil efficacy in heart failure

The Journal of Physiology, EarlyView.
Abstract figure legend Impact of Omecamtiv Mecarbil (OM) on in‐silico models of heart failure. A mathematical electromechanical model of human ventricular tissue is used to simulate the effects of OM in heart failure with reduced ejection fraction (HFrEF).
Maria Teresa Mora, Ilse van Herck, Cécile Daversin‐Catty, Henrik Finsberg, Jordi Llopis‐Lorente, Javier Saiz, Hermenegild Arevalo, Samuel Wall, Beatriz Trenor   +8 more
wiley   +1 more source

Metabolite‐sensitive cross‐bridge models of human atria reveal the impact of diabetes on muscle mechanoenergetics

The Journal of Physiology, EarlyView.
Abstract figure legend In this study, we used mathematical modelling to explore the effect of diabetes on muscle mechanoenergetics. Our parameterisation of cross‐bridge models using data from non‐diabetic and diabetic human atrial tissues revealed lower values for cross‐bridge stiffness, detachment rates, attachment rates and lower ATP sensitivity in ...
Julia H. Musgrave, June‐Chiew Han, Marie‐Louise Ward, Andrew J. Taberner, Kenneth Tran   +4 more
wiley   +1 more source

The Vulnerable Phase of Heart Failure [PDF]

, 2018
Butler, Javed, Chioncel, Ovidiu, Collins, Sean, Gracia, Ely, Pang, Peter, Singh, Prabhjot   +5 more
core   +1 more source

Antioxidant supplementation blunts the proteome response to 3 weeks of sprint interval training preferentially in human type 2 muscle fibres

The Journal of Physiology, EarlyView.
Abstract figure legend Sprint interval training (SIT) is a popular time‐efficient type of endurance training. Healthy young men performed nine SIT sessions (4–6 × 30 s all‐out cycling sprints) over 3 weeks while being supplemented with antioxidants (high doses of vitamins C and E) or placebo. Muscle biopsies taken before and after the first SIT session
Victoria L. Wyckelsma, Marta Murgia, Sigitas Kamandulis, Stefano Gastaldello, Marius Brazaitis, Audrius Snieckus, Nerijus Eimantas, Mati Pääsuke, Sebastian Edman, William Apro, Daniel C. Andersson, Håkan Westerblad, Tomas Venckunas   +12 more
wiley   +1 more source

HTS driven by fluorescence lifetime detection of FRET identifies activators and inhibitors of cardiac myosin

SLAS discovery : advancing life sciences R & D, 2023
JM Muretta, D. Rajasekaran, Y. Blat, S. Little, M. Myers, C. Nair, B. Burdekin, SL Yuen, N. Jimenez, P. Guhathakurta, A. Wilson, AR Thompson, N. Surti, D. Connors, P. Chase, D. Harden, CM Barbieri, L. Adam, DD Thomas   +18 more
semanticscholar   +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

Optimal neuromuscular performance requires motor neuron phosphagen kinases

The Journal of Physiology, EarlyView.
Abstract figure legend Motor neuron (MN) terminals in fruit flies, mice and humans contain phosphagen kinases, a key enzyme in their energy storage and buffering system. Here we knocked down the primary phosphagen kinase in fruit fly larvae (arginine kinase 1 (ArgK1)) but were surprised to find that MN endurance was unaffected.
Karlis A. Justs, Danielle V. Latner (nee Riboul), Carlos D. Oliva, Yosuf Arab, Gabriel G. Bonassi, Olena Mahneva, Sarah Crill, Sergio Sempertegui, Paul A. Kirchman, Yaouen Fily, Gregory T. Macleod   +10 more
wiley   +1 more source

Energetic microdomains and the vascular control of neuronal and muscle excitability: Toward a unified model

The Journal of Physiology, EarlyView.
Abstract figure legend The capillary–mitochondria–ion channel (CMIC) axis scales structural resources to match functional workload. (Left) In settings of restricted energetic capacity (e.g. cortical neurons), sparse capillary networks and modest mitochondrial pools set a lower energetic ceiling, sufficient to support phasic, low‐workload excitability. (
L. Fernando Santana, Scott Earley
wiley   +1 more source