Results 61 to 70 of about 8,652 (209)

Connexin and pannexin hemichannels of neurons and astrocytes [PDF]

Channels, 2008
Hemichannels are large pore ion channels that in the traditional view are formed when half a gap connexin junction opens to the extracellular space. It is now evident that other ion channel families, including the newly discovered pannexin family can form channels with all the nascent properties of hemichannels.
Roger J, Thompson, Brian A, Macvicar
openaire   +2 more sources

Connexons and pannexons: newcomers in neurophysiology

Frontiers in Cellular Neuroscience, 2014
Connexin hemichannels are single membrane channels which have been traditionally thought to work in pairs to form gap junction channels across two opposing cells.
Giselle eCheung, Oana eChever, Nathalie eRouach   +2 more
doaj   +1 more source

Electrophysiological properties of the dorsal motor nucleus of the vagus motoneurones controlling airway mucus secretion in rats

The Journal of Physiology, EarlyView.
Abstract figure legend Acidosis depolarises parasympathetic respiratory motoneurones in the dorsal motor nucleus of the vagus (DMV) and increases their firing frequency by reducing TWIK‐2 channel conductance. Acidosis also activates astrocytes, which further enhance neuronal excitability through NMDA receptor‐dependent glutamatergic signalling.
Daniel P. de Souza, Renato W. Martins Sá, Luiza Henrique de Souza, Fernando S. Ramalho, Davi J. A. Moraes   +4 more
wiley   +1 more source

Dorso‐Ventral and Night‐Day Regulation of Extracellular K+ Dynamics in Mouse Hippocampal Astrocytes

Glia, Volume 74, Issue 9, September 2026.
Hippocampal astrocytic K+ buffering varies by region and time. Ventral astrocytes show faster K+ accumulation due to reduced Kir4.1 function. Such regional divergence is modulated by circadian shifts in Kir4.1 and gap junction coupling. ABSTRACT Astrocytes regulate extracellular potassium (K+) through multiple mechanisms operating across distinct ...
Nariman Kiani, Kabeer Abubakar, Tin Luka Petanjek, Monique Esclapez, Anton Ivanov, Christophe Bernard   +5 more
wiley   +1 more source

The Health Benefits of Exercise: Molecular and Cellular Mechanisms

MedComm, Volume 7, Issue 9, September 2026.
Our synthesis integrates evidence on exercise‐induced regulatory mechanisms across multiple systems (musculoskeletal, cardiovascular, nervous, metabolic and immune), cross‐system, and aging. We also discusses adaptive regulation of exercise in extreme environments, along with the prospects and challenges of multiomics and AI‐driven precision exercise ...
Peifeng Ying, Huilin Wang, Xiu Lu, Wenjuan Zhang, Zhehao Lin, Kai Wang, Shangxuan Li, Lu Chen, Mingchao Jiang, Sarkawt Hamad, Yi Wang, Jianmin Wu, Shukuan Ling   +12 more
wiley   +1 more source

Modulation of Cx46 hemichannels by nitric oxide

American Journal of Physiology-Cell Physiology, 2009
Gap-junction hemichannels are composed of six protein subunits (connexins). Undocked hemichannels contribute to physiological autocrine/paracrine cell signaling, including release of signaling molecules, cell-volume regulation, and glucose uptake.
Retamal, Mauricio A., Yin, ShengYong, Altenberg, Guillermo A., Reuss, Luis   +3 more
openaire   +5 more sources

Piezo1 Activation Rescues Anabolic Response to Mechanical Loading in Aged Bone via Connexin 43 Hemichannels

Aging Cell, Volume 25, Issue 9, September 2026.
Yoda1‐induced Piezo1 activation enhances Piezo1‐Cx43 interaction upon mechanical stimulation, triggering PI3K‐Akt signaling to drive Cx43 phosphorylation and hemichannel opening. These events elevate PGE2 release, suppress SOST expression in senescent osteocytes, and ultimately enhance bone anabolism on the endosteal surface.
Dezhi Zhao, Jiayue Fu, Han Liu, Shuting Liang, Mingming Song, Aining Zhang, Dong‐en Wang, Qianjin Guo, You Zhang, Jiawei Wu, Huiyun Xu   +10 more
wiley   +1 more source

Hemichannel and Junctional Properties of Connexin 50 [PDF]

Biophysical Journal, 2002
Lens fiber connexins, cx50 and cx46 (alpha3 and alpha8), belong to a small subset of connexins that can form functional hemichannels in nonjunctional membranes. Knockout of either cx50 or cx46 results in a cataract, so the properties of both connexins are likely essential for proper physiological functioning of the lens.
Beahm, Derek L., Hall, James E.
openaire   +2 more sources

Acute activation of hemichannels by ethanol leads to Ca2+-dependent gliotransmitter release in astrocytes

Frontiers in Cell and Developmental Biology
Multiple studies have demonstrated that acute ethanol consumption alters brain function and cognition. Nevertheless, the mechanisms underlying this phenomenon remain poorly understood.
Gonzalo I. Gómez, Claudia García-Rodríguez, Jesús E. Marillán, Sergio A. Vergara, Tanhia F. Alvear, Arantza Farias-Pasten, Juan C. Sáez, Mauricio A. Retamal, Maximiliano Rovegno, Fernando C. Ortiz, Juan A. Orellana   +10 more
doaj   +1 more source

Innexins: Expression, Regulation, and Functions

Frontiers in Physiology, 2018
The innexin (Inx) proteins form gap junction channels and non-junctional channels (named hemichannels) in invertebrates. These channels participate in cellular communication playing a relevant role in several physiological processes.
Juan Güiza, Iván Barría, Juan C. Sáez, Juan C. Sáez, José L. Vega   +4 more
doaj   +1 more source