Journal
NEUROSCIENCE
Volume 115, Issue 1, Pages 1-5Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/S0306-4522(02)00274-9
Keywords
cholinergic receptors; primary afferent neuron; sensory neuron; spinal ganglion; immunohistochemistry
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Previous binding studies have suggested the presence of a so far unknown nicotinic acetylcholine receptor subunit in dorsal root ganglia (Pugh et al., 1995). Here, we investigated whether the most recently identified subunit, alpha10, and its potential interaction partner, alpha9 (Elgoyhen et al., 2001), are expressed in these ganglia. All neurons of rat dorsal root ganglia, but no glial cells, expressed both alpha9 and alpha10 mRNA in in situ hybridization, and exhibited alpha10 immunoreactivity using a newly raised antibody. These findings were confirmed by RT-PCR and western blotting. The data show that dorsal root ganglion neurons coexpress alpha9 and alpha10 nicotinic receptor subunits, thereby providing the first example of neuronal expression of this receptor subunit pair. (C) 2002 IBRO. Published by Elsevier Science Ltd. All rights reserved.
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