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Cited by 358

The DOI matches its Crossref record; 50 of the 50 references it cites were found in a registry or an index.

The TTX‐Resistant Sodium Channel Nav1.8 (SNS/PN3): Expression and Correlation with Membrane Properties in Rat Nociceptive Primary Afferent Neurons

Open access
Djouhri, Laiche, Fang, Xin, Okuse, Kenji, Wood, John N., Berry, Carol M., Lawson, Sally N.·2003·The Journal of Physiology
DOI 10.1113/jphysiol.2003.042127
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Abstract

We have examined the distribution of the sensory neuron‐specific Na+ channel Na v 1.8 (SNS/PN3) in nociceptive and non‐nociceptive dorsal root ganglion (DRG) neurons and whether its distribution is related to neuronal membrane properties. Na v 1.8‐like immunoreactivity (Na v 1.8‐LI) was examined with an affinity purified polyclonal antiserum (SNS11) in rat DRG neurons that were classified according to sensory receptive properties and by conduction velocity (CV) as C‐, Aδ‐ or Aα/β. A significantly higher proportion of nociceptive than low threshold mechanoreceptive (LTM) neurons showed Na v 1.8‐LI, and nociceptive neurons had significantly more intense immunoreactivity in their somata than LTM neurons. Results showed that 89, 93 and 60 % of C‐, Aδ‐ and Aα/β‐fibre nociceptive units respectively and 88 % of C‐unresponsive units were positive. C‐unresponsive units had electrical membrane properties similar to C‐nociceptors and were considered to be nociceptive‐type neurons. Weak positive Na v 1.8‐LI was also present in some LTM units including a C LTM, all Aδ LTM units (D hair), about 10 % of cutaneous LTM Aα/β‐units, but no muscle spindle afferent units. Na v 1.8‐LI intensity was negatively correlated with soma size (all neurons) and with dorsal root CVs in A‐ but not C‐fibre neurons. Na v 1.8‐LI intensity was positively correlated with action potential (AP) duration (both rise and fall time) in A‐fibre neurons and with AP rise time only in positive C‐fibre neurons. It was also positively correlated with AP overshoot in positive neurons. Thus high levels of Na v 1.8 protein may contribute to the longer AP durations (especially in A‐fibre neurons) and larger AP overshoots that are typical of nociceptors.

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Metadata

Authors
Djouhri, L., Fang, X., Okuse, K., Wood, J. N., Berry, C. M., & Lawson, S. N.
Venue
The Journal of Physiology
Publisher
Wiley
Published
2003-08
Volume
550
Issue
3
Pages
739-752
ISSN
  • 0022-3751 (ISSN-L)
  • 1469-7793
DOI
10.1113/jphysiol.2003.042127
OpenAlex
W2008465842
Cited by
358
References
50
FWCI
6.86
Type
journal article
Language
en
Open access
green

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