TWIK-Related Spinal Cord K+ Channel Expression Is Increased in the Spinal Dorsal Horn after Spinal Nerve Ligation
Yonsei Medical Journal
; : 1307-1315, 2015.
Article
in English
| WPRIM (Western Pacific)
| ID: wpr-185890
Responsible library:
WPRO
ABSTRACT
PURPOSE:
The TWIK-related spinal cord K+ channel (TRESK) has recently been discovered and plays an important role in nociceptor excitability in the pain pathway. Because there have been no reports on the TRESK expression or its function in the dorsal horn of the spinal cord in neuropathic pain, we analyzed TRESK expression in the spinal dorsal horn in a spinal nerve ligation (SNL) model. MATERIALS ANDMETHODS:
We established a SNL mouse model by using the L5-6 spinal nerves ligation. We used real-time polymerase chain reaction and immunohistochemistry to investigate TRESK expression in the dorsal horn and L5 dorsal rot ganglion (DRG).RESULTS:
The SNL group showed significantly higher expression of TRESK in the ipsilateral dorsal horn under pain, but low expression in L5 DRG. Double immunofluorescence staining revealed that immunoreactivity of TRESK was mostly restricted in neuronal cells, and that synapse markers GAD67 and VGlut2 appeared to be associated with TRESK expression. We were unable to find a significant association between TRESK and calcineurin by double immunofluorescence.CONCLUSION:
TRESK in spinal cord neurons may contribute to the development of neuropathic pain following injury.
Full text:
Available
Database:
WPRIM (Western Pacific)
Main subject:
Pain
/
Spinal Nerves
/
Nociceptors
/
Potassium Channels
/
Rats, Sprague-Dawley
/
Disease Models, Animal
/
Real-Time Polymerase Chain Reaction
/
Spinal Cord Dorsal Horn
/
Hyperalgesia
/
Ligation
Limits:
Animals
Language:
English
Journal:
Yonsei Medical Journal
Year:
2015
Document type:
Article