Results 71 to 80 of about 12,393 (207)

HERG potassium channel regulation by the N-terminal eag domain [PDF]

open access: yesCellular Signalling, 2012
Human ether-á-go-go related gene (hERG, K(v)11.1) potassium channels play a significant role in cardiac excitability. Like other K(v) channels, hERG is activated by membrane voltage; however, distinct from other K(v) channels, hERG channels have unusually slow kinetics of closing (deactivation).
Ahleah S, Gustina, Matthew C, Trudeau
openaire   +2 more sources

Upregulation of Functional Kv11.1 Isoform Expression by Inhibition of Intronic Polyadenylation with Antisense Morpholino Oligonucleotides

open access: yes, 2014
The KCNH2 gene encodes the Kv11.1 potassium channel that conducts the rapidly activating delayed rectifier current in the heart. KCNH2 pre-mRNA undergoes alternative processing; intron 9 splicing leads to the formation of a functional, full-length Kv11 ...
Gong, Qiuming   +2 more
core   +2 more sources

Determining properties of human‐induced pluripotent stem cell‐derived cardiomyocytes using spatially resolved electromechanical metrics

open access: yesThe Journal of Physiology, EarlyView.
Abstract figure legend In this study, we use human‐induced pluripotent stem cell‐derived cardiomyocyte (hiPSC‐CM) experiments and computational modelling to identify the mechanism of action of drug compounds. In the hiPSC‐CM experiments, optical measurements of cell collections are recorded in the baseline case and after drug exposure.
Karoline Horgmo Jæger   +4 more
wiley   +1 more source

Procaine, a State-Dependent Blocker, Inhibits HERG Channels by Helix Residue Y652 and F656 in the S6 Transmembrane Domain

open access: yesJournal of Pharmacological Sciences, 2013
The article evaluated the inhibitory action of procaine on wild-type and mutated HERG potassium channel current (IHERG) to determine whether mutations in the S6 region are important for the inhibition of IHERG by procaine.
Na Wang, Ji Hua Ma, Pei Hua Zhang
doaj   +1 more source

Proton block of proton-activated TRPV1 current. [PDF]

open access: yes, 2015
The TRPV1 cation channel is a polymodal nociceptor that is activated by heat and ligands such as capsaicin and is highly sensitive to changes in extracellular pH. In the body core, where temperature is usually stable and capsaicin is normally absent, H(+)
Lee, Bo Hyun, Zheng, Jie
core   +1 more source

14‐3‐3 proteins: Regulators of cardiac excitation–contraction coupling and stress responses

open access: yesThe Journal of Physiology, EarlyView.
Abstract figure legend 14‐3‐3 protein interactions in cardiac regulation. Schematic representation of 14‐3‐3 binding partners in excitation–contraction coupling, transcriptional regulation/development and stress response pathways. Asterisks indicate targets where the exact 14‐3‐3 binding site is unknown.
Heather C. Spooner, Rose E. Dixon
wiley   +1 more source

Ion channels: structural basis for function and disease. [PDF]

open access: yes, 1996
Ion channels are ubiquitous proteins that mediate nervous and muscular function, rapid transmembrane signaling events, and ionic and fluid balance. The cloning of genes encoding ion channels has led to major strides in understanding the mechanistic basis
Goldstein, SA
core   +1 more source

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

open access: yesThe 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   +6 more
wiley   +1 more source

Fluid flow modulates electrical activity in cardiac hERG potassium channels [PDF]

open access: yesJournal of Biological Chemistry, 2018
Fluid movement within the heart generates substantial shear forces, but the effect of this mechanical stress on the electrical activity of the human heart has not been examined. The fast component of the delayed rectifier potassium currents responsible for repolarization of the cardiac action potential, Ikr, is encoded by the human ether-a-go-go ...
Samrat, Roy, M K, Mathew
openaire   +2 more sources

An open‐label, single‐arm, dose‐escalating concentration–QT study to investigate the cardiac effects and safety of paroxetine in healthy adults

open access: yesBritish Journal of Clinical Pharmacology, Volume 92, Issue 5, Page 1385-1396, May 2026.
Abstract Aims Paroxetine is a selective serotonin reuptake inhibitor (SSRI), approved for treatment of major depressive disorder and anxiety disorders. Some SSRIs are known to prolong the QT interval; however, clinical evidence to establish a lack of association between paroxetine and corrected QT interval (QTc) prolongation is limited. Therefore, this
Sven C. van Dijkman   +6 more
wiley   +1 more source

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