The expressions of GABA and glutannate transporters are altered in the spared nerve injury model of neuropathic pain in the rat

Details

Serval ID
serval:BIB_5F0D564AB4C4
Type
Inproceedings: an article in a conference proceedings.
Publication sub-type
Abstract (Abstract): shot summary in a article that contain essentials elements presented during a scientific conference, lecture or from a poster.
Collection
Publications
Institution
Title
The expressions of GABA and glutannate transporters are altered in the spared nerve injury model of neuropathic pain in the rat
Title of the conference
Annual meeting of the Swiss Society of Anaesthesiology and Resuscitation
Author(s)
Gosselin R.-D., Pertin M., Decosterd I.
Address
Interlaken, Switzerland, October 29-31, 2009
ISBN
1424-7860
Publication state
Published
Issued date
2009
Peer-reviewed
Oui
Volume
139
Series
Swiss Medical Weekly
Pages
13S-13S
Language
english
Notes
Meeting Abstract
Abstract
Neuropathic pain is a common form of chronic pain, and is unsuccessfully alleviated by usual medications. Mounting evidence strongly point at non-neuronal glial cells in the spinal cord as key actors behind the persistence of pain. In particular, a change in the astrocytic capacity to regulate extracellular concentrations of neurotransmitters might account for the strengthened spinal nociceptive neurotransmission. Therefore, we investigated whether spinal expressions of GABA (GAT) and glutamate (EAAT) transporters were affected in the spared nerve injury (SNI) rat model of neuropathic pain. SNI was induced in male Sprague-Dawley rats by a unilateral section of tibial and common peroneal branches of the sciatic nerve, leaving the sural branch untouched. Western-blot analysis was performed to study the expression of GAT-1 and GAT-3 as well as EAAT-1 and EAAT-2, the main astrocytic GABA and glutamate transporters respectively. Seven days post-surgery, a significant increase in GAT-1, GAT-3 and EAAT-1 expressions is detected in both ipsilateral and contralateral sides of lumbar spinal cord in comparison to sham animals. No change in EAAT-2 signal could be detected. Furthermore, the astrocytic reaction parallels the glutamate and GABA transporters changes as we found an increased GFAP expression compared to the sham condition, in both spinal sides. Together, our results indicate that modifications in GABA and glutamate transport may occur along with SNI-associated painful neuropathy and identify spinal neurotransmitter reuptake machinery as a putative pharmacological target in neuropathic pain.
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Create date
19/11/2009 15:55
Last modification date
20/08/2019 15:16
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