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ion channel

   Also found in: Dictionary/thesaurus, Encyclopedia, Wikipedia, Hutchinson 0.01 sec.
ion channel
n.
See channel.

ion
an atom or group of atoms having a positive (cation) or negative (anion) electric charge by virtue of having gained or lost one or more electrons. Substances forming ions are electrolytes.

ion channel
see channel.
dipolar ion
zwitterion.
hydrogen ion
the positively charged hydrogen atom (H+), present to excess in acid solutions.
ion pair
the pair of ions created when an atom has had an electron removed by ionizing radiation.
ion pump
see calcium pump, sodium pump.
ion trapping
a strategy for treatment of poisonings based on the principle that cell membranes are less permeable to ionized compounds. With knowledge of the characteristics of the toxin, treatment can be given to alter the acid-base balance in favor of ionization.


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Nicotine activates a so-called ion channel in skin cells that unleashes an inflammatory response by the immune system, leading to itching, they reported in the journal Nature Neuroscience.
Here we show that cholesterol regulates the submembrane pool of ion channels readily available for recruitment into the surface membranes of heart cells.
Among the topics are multiple roles of voltage-gated sodium channels in the pathophysiology of pain, roles of unique mitochondrial ion channels in synaptic transmission and programmed cell death, the effect of hypoxia-ischemia on voltage-dependent channels, the regulation of neuronal ion channels by G-protein-coupled receptors in sympathetic neurons, neuronal Kv7 potassium channels as emerging targets for treating pain, and high-throughput screening technologies in ion channel drug discovery.
 
 
 
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