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Hoffmann, R. A wiki for the life sciences where authorship matters. Nature Genetics (2008)
 

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Intracellular calcium changes associated with cholinergic nicotinic receptor activation in cultured myenteric plexus neurones.

Intracellular free calcium concentration ([Ca2+]i) was measured in cultured explants of myenteric plexus neurones by using the fluorescent calcium indicator Indol in combination with patch-clamp techniques. The basal [Ca2+]i was 94 nM and spontaneous oscillations in the internal free calcium concentration were recorded. These oscillations were associated with bursts of action potentials triggered by spontaneous nicotinic excitatory synaptic potentials. Under voltage clamp conditions, application of the selective nicotinic agonist m-hydroxyphenylpropyl-trimethylammonium iodide (10 microM) induced an inward current and increased the intracellular free calcium concentration. We conclude that cholinergic synaptic excitatory activity provide a regular calcium entry in myenteric neurone and suggest that the nicotinic channel might be significantly permeable to calcium.[1]

References

  1. Intracellular calcium changes associated with cholinergic nicotinic receptor activation in cultured myenteric plexus neurones. Trouslard, J., Mirsky, R., Jessen, K.R., Burnstock, G., Brown, D.A. Brain Res. (1993) [Pubmed]
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