Results 41 to 50 of about 257,064 (311)
Activation of Calcium Channels
Biophysical Journal, 1984 Activation of Ca channels has been described as a Hodgkin-Huxley process in which the time constants have ratios of two or greater (1, 2, 3) or as a three-state linear sequential process with two very different time constants (4). We examined activation by measuring the turn-on and turn-off of macroscopic Ca currents and the discharge of single Ca ...
Brown, Arthur M. +2 more
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TRP channels in microglia: role in physiology and disease
Frontiers in Cellular Neuroscience, 2015 Microglia are responsible for modulating the cellular environment in the nervous system, where they have neuroprotective effects. In these cells has been reported the expression of different ion channels, including those belonging to the transient ...
Yolima P Torres
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Cavβ surface charged residues contribute to the regulation of neuronal calcium channels
Molecular Brain, 2022 Voltage-gated calcium channels are essential regulators of brain function where they support depolarization-induced calcium entry into neurons. They consist of a pore-forming subunit (Cavα1) that requires co-assembly with ancillary subunits to ensure ...
Alexandra Tran-Van-Minh +2 more
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The involvement of actin, calcium channels and exocytosis proteins in somato-dendritic oxytocin and vasopressin release [PDF]
, 2012 Hypothalamic magnocellular neurons release vasopressin and oxytocin not only from their axon terminals into the blood, but also from their somata and dendrites into the extracellular space of the brain, and this can be regulated independently ...
Tobin, Vicky +8 more
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The regulation role of calcium channels in mammalian sperm function: a narrative review with a focus on humans and mice [PDF]
PeerJMammalian sperm are characterized as specialized cells, as their transcriptional and translational processes are largely inactive. Emerging researches indicate that Ca2+ serves as a crucial second messenger in the modulation of various sperm ...
Yebin Yang +6 more
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Ryanodine receptors, a family of intracellular calcium ion channels, are expressed throughout early vertebrate development [PDF]
, 2011 Background Calcium signals ([Ca2+]i) direct many aspects of embryo development but their regulation is not well characterised. Ryanodine receptors (RyRs) are a family of intracellular Ca2+ release channels that control the flux of Ca2+ from internal ...
Ashworth, R +8 more
core +1 more source
Low voltage activation of KCa1.1 current by Cav3-KCa1.1 complexes. [PDF]
PLoS ONE, 2013 Calcium-activated potassium channels of the KCa1.1 class are known to regulate repolarization of action potential discharge through a molecular association with high voltage-activated calcium channels.
Renata Rehak +5 more
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CaV1 and CaV2 calcium channels mediate the release of distinct pools of synaptic vesicles
eLife, 2023 Activation of voltage-gated calcium channels at presynaptic terminals leads to local increases in calcium and the fusion of synaptic vesicles containing neurotransmitter.
Brian D Mueller +12 more
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Medicine, 2003 Overdose of calcium channel blockers is potentially lethal. Verapamil and diltiazem are much more dangerous than dihydropyridines. Hypotension with (verapamil and diltiazem) or without (dihydropyridines) heart block and bradycardia are the most important features.
Buckley, Nicholas +2 more
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Pflügers Archiv - European Journal of Physiology, 2018 Tuned calcium entry through voltage-gated calcium channels is a key requirement for many cellular functions. This is ensured by channel gates which open during membrane depolarizations and seal the pore at rest. The gating process is determined by distinct sub-processes: movement of voltage-sensing domains (charged S4 segments) as well as opening and ...
Hering, S. +5 more
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