Results 71 to 80 of about 5,909 (195)

Gap junctional and ephaptic coupling in cardiac electrical propagation: homocellular and heterocellular perspectives

open access: yesThe Journal of Physiology, EarlyView.
Abstract figure legend Intricate cellular electrical coupling networks in the heart. Various cell types couple the central cardiomyocyte through gap junctional contacts, with the exception of neurons. Whether ephaptic coupling (EpC) occurs in homocellular or heterocellular contexts beyond cardiomyocyte–cardiomyocyte interactions remains unclear ...
Xiaobo Wu   +2 more
wiley   +1 more source

Downregulation of miR-151-5p contributes to increased susceptibility to arrhythmogenesis during myocardial infarction with estrogen deprivation. [PDF]

open access: yesPLoS ONE, 2013
Estrogen deficiency is associated with increased incidence of cardiovascular diseases. But merely estrogen supplementary treatment can induce many severe complications such as breast cancer.
Ying Zhang   +14 more
doaj   +1 more source

Hypoxia Induces Apoptosis of Microglia BV2 by Upregulating Kir2.1 to Activate Mitochondrial-Related Apoptotic Pathways

open access: yesDisease Markers, 2022
Aim To explore the role of Kir2.1 in hypoxia-induced microglial apoptosis. Methods BV2 microglial cell lines were cultured and treated with ML133 hydrochloride, a Kir2.1 channel blocker, for 23 h and with 500 μmol/L of CoCl2 for 8 h.
Yunyi Xie   +9 more
semanticscholar   +1 more source

The inward rectifier potassium channel Kir2.1 is required for osteoblastogenesis [PDF]

open access: yesHuman Molecular Genetics, 2014
Andersen's syndrome (AS) is a rare and dominantly inherited pathology, linked to the inwardly rectifying potassium channel Kir2.1. AS patients exhibit a triad of symptoms that include periodic paralysis, cardiac dysrhythmia and bone malformations.
Sonia, Sacco   +6 more
openaire   +2 more sources

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

Inhibition of Cardiac Kir Current (IK1) by Protein Kinase C Critically Depends on PKCβ and Kir2.2.

open access: yesPLoS ONE, 2016
BackgroundCardiac inwardly rectifying Kir current (IK1) mediates terminal repolarisation and is critical for the stabilization of the diastolic membrane potential.
Daniel Scherer   +10 more
doaj   +1 more source

SNTA1 gene rescues ion channel function and is antiarrhythmic in cardiomyocytes derived from induced pluripotent stem cells from muscular dystrophy patients

open access: yeseLife, 2022
Background: Patients with cardiomyopathy of Duchenne Muscular Dystrophy (DMD) are at risk of developing life-threatening arrhythmias, but the mechanisms are unknown.
Eric N Jimenez-Vazquez   +13 more
doaj   +1 more source

Effects of Ruanmailing in Blocking Early Stages of Atherosclerosis by TNF-α Regulation via Kir2.1

open access: yesEvidence-Based Complementary and Alternative Medicine, 2022
Objective Ruanmailing oral solution consists of 16 herbs, has anti-lipid peroxidation activity, protects vascular endothelial cells, and improves vascular elasticity. It is an effective drug for the treatment of atherosclerosis (AS).
Liufang Fan   +6 more
semanticscholar   +1 more source

ESCRT regulates surface expression of the Kir2.1 potassium channel

open access: yesMolecular Biology of the Cell, 2014
Protein quality control (PQC) is required to ensure cellular health. PQC is recognized for targeting the destruction of defective polypeptides, whereas regulated protein degradation mechanisms modulate the concentration of specific proteins in concert with physiological demands. For example, ion channel levels are physiologically regulated within tight
Kolb, Alexander R.   +5 more
openaire   +2 more sources

Voltage Dependence of Kir2.1 Block by Intracellular Spermine [PDF]

open access: yesBiophysical Journal, 2010
Strong voltage sensitivity of inward-rectifier K+ (Kir) channels, such as Kir2.1, has been hypothesized to arise primarily from an intracellular spermine molecule displacing K+ ions from the wide, intracellular part of the ion conduction pore outwardly across the narrow ion selectivity filter.
Shin, Hyeon-Gyu, Xu, Yanping, Lu, Zhe
openaire   +1 more source

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