Central sensitization in medullary dorsal horn involves gap junctions and hemichannels.

Abstract:

:Central sensitization is a fundamental mechanism contributing to acute and chronic pain conditions. Our previous studies have documented a glutamatergic, purinergic and glial-dependent central sensitization that can be induced in rat medullary dorsal horn nociceptive neurons by mustard oil application to the tooth pulp. This study showed that carbenoxolone, a potent gap junction and hemichannel blocker, completely blocked all parameters of mustard oil-induced central sensitization tested in functionally identified medullary dorsal horn nociceptive neurons. These results represent the first evidence suggesting that gap junctions and hemichannels may have a critical role in mediating central sensitization in dorsal horn nociceptive neurons and may account for the spread as well as development of central sensitization.

journal_name

Neuroreport

journal_title

Neuroreport

authors

Chiang CY,Li Z,Dostrovsky JO,Sessle BJ

doi

10.1097/WNR.0b013e328336eecb

subject

Has Abstract

pub_date

2010-02-17 00:00:00

pages

233-7

issue

3

eissn

0959-4965

issn

1473-558X

journal_volume

21

pub_type

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