Results 181 to 190 of about 120,698 (291)

Mechanisms underlying local Ca2+ signalling differences between right and left atrial myocytes at normal and increased frequencies

open access: yesThe Journal of Physiology, EarlyView.
Abstract figure legend Left atrial myocytes have TAT‐associated faster Ca2+ release but are more prone to maladaptation at higher frequencies due to weaker peripheral SR Ca2+ uptake and smaller trigger Ca2+ current. Abstract Changes in heart rate affect Ca2+ signalling and contractility in ventricular muscle, but the effects on atrial Ca2+ signalling ...
Joon‐Chul Kim   +6 more
wiley   +1 more source

Kinematic‐calcium loops unravel impaired excitation–contraction coupling in MELAS‐affected cardioids

open access: yesThe Journal of Physiology, EarlyView.
Abstract figure legend Representation of kinematic and calcium transient loop with respect to traditional time coplotting. Abstract Impaired Ca2+ handling, and in particular leakage from the sarcoplasmic reticulum, is a critical mechanism in metabolic diseases affecting the heart.
Margherita Burattini   +7 more
wiley   +1 more source

Trafficking and potentiation of Nav1.7 and Nav1.8 channels are mediated by IQGAP1

open access: yesThe Journal of Physiology, EarlyView.
Abstract figure legend IQGAP1 binds to the voltage‐gated Nav1.7 and Nav1.8 channels and TRPA1 channels in sensory neurons. Inflammatory mediators (IM), including PGE2 and TNFα, released during nerve injury and inflammation activate intracellular signalling messengers such as PKA, p38 MAPK and Cdc42 through their respective receptors.
Xuming Zhang   +2 more
wiley   +1 more source

The ultrarapid delayed rectifier potassium current has important functional role in the repolarization reserve of canine and human ventricular muscle

open access: yesThe Journal of Physiology, EarlyView.
Abstract figure legend The ultrarapid delayed rectifier potassium current (IKur) has long been considered an atrial‐specific current with no functional role in the ventricles, despite evidence of its expression in ventricular myocytes. In the present study we challenged this prevailing concept and investigated the potential role of IKur in ventricular ...
Alaa Amin E. Abdelmagid   +17 more
wiley   +1 more source

Mesenchymal and neural stem cell differentiation into Purkinje-like cells: Morphological study. [PDF]

open access: yesJ Taibah Univ Med Sci
Mohammad MH   +4 more
europepmc   +1 more source

A Microglia–Astrocyte Signaling Axis Regulates Astrocyte Piezo1 Expression and Inflammatory Responses

open access: yesGlia, Volume 74, Issue 9, September 2026.
Activated microglia‐derived inflammatory signals drive astrocytic Piezo1 expression in both in vitro and in vivo models. Piezo1 upregulation modulates astrocytic Ca2+ dynamics and inflammatory gene expression, thereby limiting microglial activation. ABSTRACT Structural tissue alterations in numerous brain disorders can initiate mechanosensory signaling
Yanyang Bai   +8 more
wiley   +1 more source

Navigating Human Astrocyte Differentiation: Direct and Rapid One‐Step Differentiation of Induced Pluripotent Stem Cells to Functional Astrocytes Supporting Neuronal Network Development

open access: yesGlia, Volume 74, Issue 9, September 2026.
One‐step protocol enabling direct differentiation of human iPSCs into functional astrocytes within 5 weeks. Validated in > 60 lines across 10 labs. iPSC‐astrocytes support robust neuronal network development in co‐culture. ABSTRACT Astrocytes play a pivotal role in neuronal network development.
Imke M. E. Schuurmans   +39 more
wiley   +1 more source

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